first commit

packages/@n8n/eslint-plugin-community-nodes/src/plugin.ts

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+import type { ESLint, Linter } from 'eslint';
+
+import pkg from '../package.json' with { type: 'json' };
+import { rules } from './rules/index.js';
+
+const plugin = {
+	meta: {
+		name: pkg.name,
+		version: pkg.version,
+		namespace: '@n8n/community-nodes',
+	},
+	// @ts-expect-error Rules type does not match for typescript-eslint and eslint
+	rules: rules as ESLint.Plugin['rules'],
+} satisfies ESLint.Plugin;
+
+const configs = {
+	recommended: {
+		ignores: ['eslint.config.{js,mjs,ts,mts}'],
+		plugins: {
+			'@n8n/community-nodes': plugin,
+		},
+		rules: {
+			'@n8n/community-nodes/ai-node-package-json': 'error',
+			'@n8n/community-nodes/no-restricted-globals': 'error',
+			'@n8n/community-nodes/no-restricted-imports': 'error',
+			'@n8n/community-nodes/credential-password-field': 'error',
+			'@n8n/community-nodes/no-deprecated-workflow-functions': 'error',
+			'@n8n/community-nodes/node-usable-as-tool': 'error',
+			'@n8n/community-nodes/package-name-convention': 'error',
+			'@n8n/community-nodes/credential-test-required': 'error',
+			'@n8n/community-nodes/no-credential-reuse': 'error',
+			'@n8n/community-nodes/icon-validation': 'error',
+			'@n8n/community-nodes/resource-operation-pattern': 'warn',
+			'@n8n/community-nodes/credential-documentation-url': 'error',
+		},
+	},
+	recommendedWithoutN8nCloudSupport: {
+		ignores: ['eslint.config.{js,mjs,ts,mts}'],
+		plugins: {
+			'@n8n/community-nodes': plugin,
+		},
+		rules: {
+			'@n8n/community-nodes/ai-node-package-json': 'error',
+			'@n8n/community-nodes/credential-password-field': 'error',
+			'@n8n/community-nodes/no-deprecated-workflow-functions': 'error',
+			'@n8n/community-nodes/node-usable-as-tool': 'error',
+			'@n8n/community-nodes/package-name-convention': 'error',
+			'@n8n/community-nodes/credential-test-required': 'error',
+			'@n8n/community-nodes/no-credential-reuse': 'error',
+			'@n8n/community-nodes/icon-validation': 'error',
+			'@n8n/community-nodes/credential-documentation-url': 'error',
+			'@n8n/community-nodes/resource-operation-pattern': 'warn',
+		},
+	},
+} satisfies Record<string, Linter.Config>;
+
+const pluginWithConfigs = { ...plugin, configs } satisfies ESLint.Plugin;
+
+const n8nCommunityNodesPlugin = pluginWithConfigs;
+export default pluginWithConfigs;
+export { rules, configs, n8nCommunityNodesPlugin };

packages/@n8n/eslint-plugin-community-nodes/src/rules/ai-node-package-json.test.ts

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+import { RuleTester } from '@typescript-eslint/rule-tester';
+
+import { AiNodePackageJsonRule } from './ai-node-package-json.js';
+
+const ruleTester = new RuleTester();
+
+ruleTester.run('ai-node-package-json', AiNodePackageJsonRule, {
+	valid: [
+		{
+			name: 'both n8n.aiNodeSdkVersion and ai-node-sdk peer dependency present',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-example", "n8n": { "aiNodeSdkVersion": 1 }, "peerDependencies": { "n8n-workflow": "*", "ai-node-sdk": "*" } }',
+		},
+		{
+			name: 'neither n8n.aiNodeSdkVersion nor ai-node-sdk present (non-AI package)',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-example", "version": "1.0.0" }',
+		},
+		{
+			name: 'n8n section without aiNodeSdkVersion and no ai-node-sdk peer dep',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-example", "n8n": { "nodes": [] } }',
+		},
+		{
+			name: 'non-package.json file is ignored',
+			filename: 'some-config.json',
+			code: '{ "n8n": { "aiNodeSdkVersion": 1 } }',
+		},
+		{
+			name: 'peerDependencies without ai-node-sdk and no aiNodeSdkVersion',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-example", "n8n": { "nodes": [] }, "peerDependencies": { "n8n-workflow": "*" } }',
+		},
+		{
+			name: 'aiNodeSdkVersion as a larger positive integer with multiple peer deps',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-example", "n8n": { "aiNodeSdkVersion": 42 }, "peerDependencies": { "n8n-workflow": "^1.0.0", "ai-node-sdk": "^1.0.0" } }',
+		},
+	],
+	invalid: [
+		{
+			name: 'n8n.aiNodeSdkVersion present but ai-node-sdk missing from peerDependencies',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-example", "n8n": { "aiNodeSdkVersion": 1 } }',
+			errors: [{ messageId: 'missingPeerDep' }],
+		},
+		{
+			name: 'n8n.aiNodeSdkVersion present but peerDependencies has other deps only',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-example", "n8n": { "aiNodeSdkVersion": 1 }, "peerDependencies": { "n8n-workflow": "*" } }',
+			errors: [{ messageId: 'missingPeerDep' }],
+		},
+		{
+			name: 'ai-node-sdk in peerDependencies but n8n.aiNodeSdkVersion missing',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-example", "n8n": { "nodes": [] }, "peerDependencies": { "n8n-workflow": "*", "ai-node-sdk": "*" } }',
+			errors: [{ messageId: 'missingSdkVersion' }],
+		},
+		{
+			name: 'ai-node-sdk in peerDependencies but no n8n section at all',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-example", "peerDependencies": { "n8n-workflow": "*", "ai-node-sdk": "*" } }',
+			errors: [{ messageId: 'missingSdkVersion' }],
+		},
+		{
+			name: 'n8n.aiNodeSdkVersion is a string instead of integer',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-example", "n8n": { "aiNodeSdkVersion": "1" }, "peerDependencies": { "ai-node-sdk": "*" } }',
+			errors: [{ messageId: 'invalidSdkVersion', data: { value: '1' } }],
+		},
+		{
+			name: 'n8n.aiNodeSdkVersion is zero',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-example", "n8n": { "aiNodeSdkVersion": 0 }, "peerDependencies": { "ai-node-sdk": "*" } }',
+			errors: [{ messageId: 'invalidSdkVersion', data: { value: '0' } }],
+		},
+		{
+			name: 'n8n.aiNodeSdkVersion is negative (parsed as UnaryExpression, not Literal)',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-example", "n8n": { "aiNodeSdkVersion": -1 }, "peerDependencies": { "ai-node-sdk": "*" } }',
+			errors: [{ messageId: 'invalidSdkVersion', data: { value: 'non-literal' } }],
+		},
+		{
+			name: 'n8n.aiNodeSdkVersion is a float',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-example", "n8n": { "aiNodeSdkVersion": 1.5 }, "peerDependencies": { "ai-node-sdk": "*" } }',
+			errors: [{ messageId: 'invalidSdkVersion', data: { value: '1.5' } }],
+		},
+		{
+			name: 'n8n.aiNodeSdkVersion is invalid and ai-node-sdk peer dep is missing (two errors)',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-example", "n8n": { "aiNodeSdkVersion": "bad" } }',
+			errors: [
+				{ messageId: 'invalidSdkVersion', data: { value: 'bad' } },
+				{ messageId: 'missingPeerDep' },
+			],
+		},
+		{
+			name: 'aiNodeSdkVersion at root level instead of inside n8n section',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-example", "aiNodeSdkVersion": 1, "peerDependencies": { "ai-node-sdk": "*" } }',
+			errors: [{ messageId: 'wrongLocation' }, { messageId: 'missingSdkVersion' }],
+		},
+		{
+			name: 'aiNodeSdkVersion at root level without peer dep',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-example", "aiNodeSdkVersion": 1 }',
+			errors: [{ messageId: 'wrongLocation' }],
+		},
+	],
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/ai-node-package-json.ts

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+import type { TSESTree } from '@typescript-eslint/utils';
+import { AST_NODE_TYPES } from '@typescript-eslint/utils';
+
+import { createRule, findJsonProperty } from '../utils/index.js';
+
+export const AiNodePackageJsonRule = createRule({
+	name: 'ai-node-package-json',
+	meta: {
+		type: 'problem',
+		docs: {
+			description:
+				'Enforce consistency between n8n.aiNodeSdkVersion and ai-node-sdk peer dependency in community node packages',
+		},
+		messages: {
+			missingPeerDep:
+				'Package declares "n8n.aiNodeSdkVersion" but is missing "ai-node-sdk" in peerDependencies. Add "ai-node-sdk": "*" to peerDependencies.',
+			missingSdkVersion:
+				'Package has "ai-node-sdk" in peerDependencies but is missing "aiNodeSdkVersion" in the "n8n" section of package.json.',
+			invalidSdkVersion: '"n8n.aiNodeSdkVersion" must be a positive integer, got {{ value }}.',
+			wrongLocation:
+				'"aiNodeSdkVersion" must be inside the "n8n" section, not at the root level of package.json.',
+		},
+		schema: [],
+	},
+	defaultOptions: [],
+	create(context) {
+		if (!context.filename.endsWith('package.json')) {
+			return {};
+		}
+
+		return {
+			ObjectExpression(node: TSESTree.ObjectExpression) {
+				// Only process the root object, not nested ones
+				if (node.parent?.type === AST_NODE_TYPES.Property) {
+					return;
+				}
+
+				const n8nProp = findJsonProperty(node, 'n8n');
+				const n8nObject =
+					n8nProp?.value.type === AST_NODE_TYPES.ObjectExpression ? n8nProp.value : null;
+
+				const aiNodeSdkVersionProp = n8nObject
+					? findJsonProperty(n8nObject, 'aiNodeSdkVersion')
+					: null;
+
+				const rootAiNodeSdkVersionProp = findJsonProperty(node, 'aiNodeSdkVersion');
+				const peerDependenciesProp = findJsonProperty(node, 'peerDependencies');
+
+				const hasAiNodeSdkVersion = aiNodeSdkVersionProp !== null;
+				const hasAiNodeSdkPeerDep =
+					peerDependenciesProp?.value.type === AST_NODE_TYPES.ObjectExpression &&
+					findJsonProperty(peerDependenciesProp.value, 'ai-node-sdk') !== null;
+
+				// Catch aiNodeSdkVersion placed at root level instead of inside n8n
+				if (rootAiNodeSdkVersionProp) {
+					context.report({
+						node: rootAiNodeSdkVersionProp,
+						messageId: 'wrongLocation',
+					});
+				}
+
+				// Validate aiNodeSdkVersion is a positive integer when present
+				if (hasAiNodeSdkVersion) {
+					const valueNode = aiNodeSdkVersionProp.value;
+					if (valueNode.type !== AST_NODE_TYPES.Literal || !isPositiveInteger(valueNode.value)) {
+						context.report({
+							node: aiNodeSdkVersionProp,
+							messageId: 'invalidSdkVersion',
+							data: {
+								value: String(
+									valueNode.type === AST_NODE_TYPES.Literal ? valueNode.value : 'non-literal',
+								),
+							},
+						});
+					}
+				}
+
+				// If aiNodeSdkVersion is declared, ai-node-sdk must be in peerDependencies
+				if (hasAiNodeSdkVersion && !hasAiNodeSdkPeerDep) {
+					context.report({
+						node: aiNodeSdkVersionProp,
+						messageId: 'missingPeerDep',
+					});
+				}
+
+				// If ai-node-sdk is in peerDependencies, aiNodeSdkVersion must be declared
+				if (hasAiNodeSdkPeerDep && !hasAiNodeSdkVersion) {
+					context.report({
+						node: peerDependenciesProp,
+						messageId: 'missingSdkVersion',
+					});
+				}
+			},
+		};
+	},
+});
+
+function isPositiveInteger(value: unknown): boolean {
+	return typeof value === 'number' && Number.isInteger(value) && value > 0;
+}

packages/@n8n/eslint-plugin-community-nodes/src/rules/credential-documentation-url.test.ts

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+import { RuleTester } from '@typescript-eslint/rule-tester';
+
+import { CredentialDocumentationUrlRule } from './credential-documentation-url.js';
+
+const ruleTester = new RuleTester();
+
+function createCredentialCode(documentationUrl: string): string {
+	return `
+import type { ICredentialType, INodeProperties } from 'n8n-workflow';
+
+export class TestCredential implements ICredentialType {
+	name = 'testApi';
+	displayName = 'Test API';
+	documentationUrl = '${documentationUrl}';
+
+	properties: INodeProperties[] = [];
+}`;
+}
+
+function createCredentialWithoutDocUrl(): string {
+	return `
+import type { ICredentialType, INodeProperties } from 'n8n-workflow';
+
+export class TestCredential implements ICredentialType {
+	name = 'testApi';
+	displayName = 'Test API';
+
+	properties: INodeProperties[] = [];
+}`;
+}
+
+function createRegularClass(): string {
+	return `
+export class RegularClass {
+	documentationUrl = 'invalid-url';
+}`;
+}
+
+ruleTester.run('credential-documentation-url', CredentialDocumentationUrlRule, {
+	valid: [
+		{
+			name: 'valid URL with default options (URLs only)',
+			code: createCredentialCode('https://example.com/docs'),
+		},
+		{
+			name: 'valid URL with explicit options',
+			code: createCredentialCode('https://example.com/docs'),
+			options: [{ allowUrls: true, allowSlugs: false }],
+		},
+		{
+			name: 'valid lowercase slug when slugs are allowed',
+			code: createCredentialCode('myservice'),
+			options: [{ allowUrls: false, allowSlugs: true }],
+		},
+		{
+			name: 'valid lowercase slug with slashes when slugs are allowed',
+			code: createCredentialCode('myservice/advanced/config'),
+			options: [{ allowUrls: false, allowSlugs: true }],
+		},
+		{
+			name: 'valid URL when both URLs and slugs are allowed',
+			code: createCredentialCode('https://example.com/docs'),
+			options: [{ allowUrls: true, allowSlugs: true }],
+		},
+		{
+			name: 'valid lowercase slug when both URLs and slugs are allowed',
+			code: createCredentialCode('myservice/config'),
+			options: [{ allowUrls: true, allowSlugs: true }],
+		},
+		{
+			name: 'credential without documentationUrl should not trigger',
+			code: createCredentialWithoutDocUrl(),
+		},
+		{
+			name: 'class not implementing ICredentialType should be ignored',
+			code: createRegularClass(),
+		},
+		{
+			name: 'valid lowercase slug with multiple segments',
+			code: createCredentialCode('myservice/somefeature/advancedconfig'),
+			options: [{ allowUrls: false, allowSlugs: true }],
+		},
+		{
+			name: 'valid lowercase alphanumeric slug',
+			code: createCredentialCode('myservice123'),
+			options: [{ allowUrls: false, allowSlugs: true }],
+		},
+		{
+			name: 'valid lowercase alphanumeric slug with slashes',
+			code: createCredentialCode('myservice123/config456'),
+			options: [{ allowUrls: false, allowSlugs: true }],
+		},
+	],
+	invalid: [
+		{
+			name: 'invalid URL with default options',
+			code: createCredentialCode('invalid-url'),
+			errors: [
+				{
+					messageId: 'invalidDocumentationUrl',
+					data: {
+						value: 'invalid-url',
+						expectedFormats: 'a valid URL',
+					},
+				},
+			],
+		},
+		{
+			name: 'slug not allowed with default options',
+			code: createCredentialCode('myservice'),
+			errors: [
+				{
+					messageId: 'invalidDocumentationUrl',
+					data: {
+						value: 'myservice',
+						expectedFormats: 'a valid URL',
+					},
+				},
+			],
+		},
+		{
+			name: 'slug with special characters should not be autofixable',
+			code: createCredentialCode('My-Service'),
+			options: [{ allowUrls: false, allowSlugs: true }],
+			errors: [
+				{
+					messageId: 'invalidDocumentationUrl',
+					data: {
+						value: 'My-Service',
+						expectedFormats: 'a lowercase alphanumeric slug (can contain slashes)',
+					},
+				},
+			],
+		},
+		{
+			name: 'uppercase slug should be autofixable',
+			code: createCredentialCode('MyService'),
+			options: [{ allowUrls: false, allowSlugs: true }],
+			output: createCredentialCode('myservice'),
+			errors: [
+				{
+					messageId: 'invalidDocumentationUrl',
+					data: {
+						value: 'MyService',
+						expectedFormats: 'a lowercase alphanumeric slug (can contain slashes)',
+					},
+				},
+			],
+		},
+		{
+			name: 'invalid URL when only URLs are allowed',
+			code: createCredentialCode('not-a-valid-url'),
+			options: [{ allowUrls: true, allowSlugs: false }],
+			errors: [
+				{
+					messageId: 'invalidDocumentationUrl',
+					data: {
+						value: 'not-a-valid-url',
+						expectedFormats: 'a valid URL',
+					},
+				},
+			],
+		},
+		{
+			name: 'invalid when neither URLs nor slugs are allowed',
+			code: createCredentialCode('https://example.com'),
+			options: [{ allowUrls: false, allowSlugs: false }],
+			errors: [
+				{
+					messageId: 'invalidDocumentationUrl',
+					data: {
+						value: 'https://example.com',
+						expectedFormats: 'a valid format (none configured)',
+					},
+				},
+			],
+		},
+		{
+			name: 'slug with invalid characters (special chars) should not be autofixable',
+			code: createCredentialCode('my@service/config'),
+			options: [{ allowUrls: false, allowSlugs: true }],
+			errors: [
+				{
+					messageId: 'invalidDocumentationUrl',
+					data: {
+						value: 'my@service/config',
+						expectedFormats: 'a lowercase alphanumeric slug (can contain slashes)',
+					},
+				},
+			],
+		},
+		{
+			name: 'slug with uppercase segment should be autofixable',
+			code: createCredentialCode('myService/Config'),
+			options: [{ allowUrls: false, allowSlugs: true }],
+			output: createCredentialCode('myservice/config'),
+			errors: [
+				{
+					messageId: 'invalidDocumentationUrl',
+					data: {
+						value: 'myService/Config',
+						expectedFormats: 'a lowercase alphanumeric slug (can contain slashes)',
+					},
+				},
+			],
+		},
+		{
+			name: 'slug with hyphens should not be autofixable',
+			code: createCredentialCode('myservice/advanced-config'),
+			options: [{ allowUrls: false, allowSlugs: true }],
+			errors: [
+				{
+					messageId: 'invalidDocumentationUrl',
+					data: {
+						value: 'myservice/advanced-config',
+						expectedFormats: 'a lowercase alphanumeric slug (can contain slashes)',
+					},
+				},
+			],
+		},
+		{
+			name: 'slug with underscores should not be autofixable',
+			code: createCredentialCode('my_service/config_advanced'),
+			options: [{ allowUrls: false, allowSlugs: true }],
+			errors: [
+				{
+					messageId: 'invalidDocumentationUrl',
+					data: {
+						value: 'my_service/config_advanced',
+						expectedFormats: 'a lowercase alphanumeric slug (can contain slashes)',
+					},
+				},
+			],
+		},
+		{
+			name: 'invalid value when both formats are allowed - shows both in error message',
+			code: createCredentialCode('Invalid-Value!'),
+			options: [{ allowUrls: true, allowSlugs: true }],
+			errors: [
+				{
+					messageId: 'invalidDocumentationUrl',
+					data: {
+						value: 'Invalid-Value!',
+						expectedFormats: 'a valid URL or a lowercase alphanumeric slug (can contain slashes)',
+					},
+				},
+			],
+		},
+		{
+			name: 'empty string should be invalid with default options',
+			code: createCredentialCode(''),
+			errors: [
+				{
+					messageId: 'invalidDocumentationUrl',
+					data: {
+						value: '',
+						expectedFormats: 'a valid URL',
+					},
+				},
+			],
+		},
+		{
+			name: 'empty string should be invalid when slugs are allowed',
+			code: createCredentialCode(''),
+			options: [{ allowUrls: false, allowSlugs: true }],
+			errors: [
+				{
+					messageId: 'invalidDocumentationUrl',
+					data: {
+						value: '',
+						expectedFormats: 'a lowercase alphanumeric slug (can contain slashes)',
+					},
+				},
+			],
+		},
+		{
+			name: 'mixed case slug with numbers should be autofixable',
+			code: createCredentialCode('MyService123/Config456'),
+			options: [{ allowUrls: false, allowSlugs: true }],
+			output: createCredentialCode('myservice123/config456'),
+			errors: [
+				{
+					messageId: 'invalidDocumentationUrl',
+					data: {
+						value: 'MyService123/Config456',
+						expectedFormats: 'a lowercase alphanumeric slug (can contain slashes)',
+					},
+				},
+			],
+		},
+		{
+			name: 'slug starting with number should be invalid and not autofixable',
+			code: createCredentialCode('123service/config'),
+			options: [{ allowUrls: false, allowSlugs: true }],
+			errors: [
+				{
+					messageId: 'invalidDocumentationUrl',
+					data: {
+						value: '123service/config',
+						expectedFormats: 'a lowercase alphanumeric slug (can contain slashes)',
+					},
+				},
+			],
+		},
+	],
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/credential-documentation-url.ts

@@ -0,0 +1,129 @@
+import {
+	isCredentialTypeClass,
+	findClassProperty,
+	getStringLiteralValue,
+	createRule,
+} from '../utils/index.js';
+
+type RuleOptions = {
+	allowUrls?: boolean;
+	allowSlugs?: boolean;
+};
+
+const DEFAULT_OPTIONS: RuleOptions = {
+	allowUrls: true,
+	allowSlugs: false,
+};
+
+function isValidUrl(value: string): boolean {
+	try {
+		new URL(value);
+		return true;
+	} catch {
+		return false;
+	}
+}
+
+function isValidSlug(value: string): boolean {
+	// TODO: Remove this special case once these slugs are updated
+	if (
+		['google/service-account', 'google/oauth-single-service', 'google/oauth-generic'].includes(
+			value,
+		)
+	)
+		return true;
+
+	return value.split('/').every((segment) => /^[a-z][a-z0-9]*$/.test(segment));
+}
+
+function hasOnlyCaseIssues(value: string): boolean {
+	return value.split('/').every((segment) => /^[a-zA-Z][a-zA-Z0-9]*$/.test(segment));
+}
+
+function validateDocumentationUrl(value: string, options: RuleOptions): boolean {
+	return (!!options.allowUrls && isValidUrl(value)) || (!!options.allowSlugs && isValidSlug(value));
+}
+
+function getExpectedFormatsMessage(options: RuleOptions): string {
+	const formats = [
+		...(options.allowUrls ? ['a valid URL'] : []),
+		...(options.allowSlugs ? ['a lowercase alphanumeric slug (can contain slashes)'] : []),
+	];
+
+	if (formats.length === 0) return 'a valid format (none configured)';
+	if (formats.length === 1) return formats[0]!;
+	return formats.slice(0, -1).join(', ') + ' or ' + formats[formats.length - 1];
+}
+
+export const CredentialDocumentationUrlRule = createRule({
+	name: 'credential-documentation-url',
+	meta: {
+		type: 'problem',
+		docs: {
+			description:
+				'Enforce valid credential documentationUrl format (URL or lowercase alphanumeric slug)',
+		},
+		messages: {
+			invalidDocumentationUrl: "documentationUrl '{{ value }}' must be {{ expectedFormats }}",
+		},
+		fixable: 'code',
+		schema: [
+			{
+				type: 'object',
+				properties: {
+					allowUrls: {
+						type: 'boolean',
+						description: 'Whether to allow valid URLs',
+					},
+					allowSlugs: {
+						type: 'boolean',
+						description: 'Whether to allow lowercase alphanumeric slugs with slashes',
+					},
+				},
+				additionalProperties: false,
+			},
+		],
+	},
+	defaultOptions: [DEFAULT_OPTIONS],
+	create(context, [options = {}]) {
+		const mergedOptions = { ...DEFAULT_OPTIONS, ...options };
+
+		return {
+			ClassDeclaration(node) {
+				if (!isCredentialTypeClass(node)) {
+					return;
+				}
+
+				const documentationUrlProperty = findClassProperty(node, 'documentationUrl');
+				if (!documentationUrlProperty?.value) {
+					return;
+				}
+
+				const documentationUrl = getStringLiteralValue(documentationUrlProperty.value);
+				if (documentationUrl === null) {
+					return;
+				}
+
+				if (!validateDocumentationUrl(documentationUrl, mergedOptions)) {
+					const canAutofix = !!mergedOptions.allowSlugs && hasOnlyCaseIssues(documentationUrl);
+
+					context.report({
+						node: documentationUrlProperty.value,
+						messageId: 'invalidDocumentationUrl',
+						data: {
+							value: documentationUrl,
+							expectedFormats: getExpectedFormatsMessage(mergedOptions),
+						},
+						fix: canAutofix
+							? (fixer) =>
+									fixer.replaceText(
+										documentationUrlProperty.value!,
+										`'${documentationUrl.toLowerCase()}'`,
+									)
+							: undefined,
+					});
+				}
+			},
+		};
+	},
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/credential-password-field.test.ts

@@ -0,0 +1,232 @@
+import { RuleTester } from '@typescript-eslint/rule-tester';
+
+import { CredentialPasswordFieldRule } from './credential-password-field.js';
+
+const ruleTester = new RuleTester();
+
+function createCredentialCode(properties: string[]): string {
+	return `
+import type { ICredentialType, INodeProperties } from 'n8n-workflow';
+
+export class TestCredential implements ICredentialType {
+	name = 'testApi';
+	displayName = 'Test API';
+
+	properties: INodeProperties[] = [
+${properties.map((prop) => `\t\t${prop}`).join(',\n')},
+	];
+}`;
+}
+
+function createProperty(
+	displayName: string,
+	name: string,
+	options: { password?: boolean; emptyTypeOptions?: boolean } = {},
+): string {
+	let typeOptionsStr = '';
+	if (options.emptyTypeOptions) {
+		typeOptionsStr = '\n\t\t\ttypeOptions: {},';
+	} else if (options.password !== undefined) {
+		typeOptionsStr = `\n\t\t\ttypeOptions: { password: ${options.password} },`;
+	}
+
+	return `{
+			displayName: '${displayName}',
+			name: '${name}',
+			type: 'string',
+			default: '',${typeOptionsStr}
+		}`;
+}
+
+function createOAuth2CredentialCode(hasPasswordProtection: boolean = true): string {
+	const passwordOptions = hasPasswordProtection ? '\n\t\t\ttypeOptions: { password: true },' : '';
+
+	return `
+import type { ICredentialType, INodeProperties } from 'n8n-workflow';
+
+export class GithubOAuth2Api implements ICredentialType {
+	name = 'githubOAuth2Api';
+	extends = ['oAuth2Api'];
+	displayName = 'GitHub OAuth2 API';
+
+	properties: INodeProperties[] = [
+		{
+			displayName: 'Access Token URL',
+			name: 'accessTokenUrl',
+			type: 'hidden',
+			default: 'https://github.com/login/oauth/access_token',
+		},
+		{
+			displayName: 'Client Secret',
+			name: 'clientSecret',
+			type: 'string',
+			default: '',${passwordOptions}
+		},
+	];
+}`;
+}
+
+// Helper function to create a regular (non-credential) class
+function createRegularClass(): string {
+	return `
+export class RegularClass {
+	properties = [
+		{
+			name: 'password',
+			type: 'string',
+		},
+	];
+}`;
+}
+
+ruleTester.run('credential-password-field', CredentialPasswordFieldRule, {
+	valid: [
+		{
+			name: 'correct usage with password field having typeOptions.password = true',
+			code: createCredentialCode([createProperty('API Key', 'apiKey', { password: true })]),
+		},
+		{
+			name: 'field name is not sensitive',
+			code: createCredentialCode([createProperty('Base URL', 'baseUrl')]),
+		},
+		{
+			name: 'multiple sensitive fields with correct typeOptions',
+			code: createCredentialCode([
+				createProperty('Password', 'password', { password: true }),
+				createProperty('Secret Token', 'secretToken', { password: true }),
+			]),
+		},
+		{
+			name: 'class does not implement ICredentialType',
+			code: createRegularClass(),
+		},
+		{
+			name: 'OAuth2 credential with URL fields and proper client secret protection',
+			code: createOAuth2CredentialCode(true),
+		},
+		{
+			name: 'public key fields should not be flagged as sensitive',
+			code: createCredentialCode([
+				createProperty('Public Key', 'publicKey'),
+				createProperty('Client ID', 'clientId'),
+			]),
+		},
+		{
+			name: 'certificates should be flagged as sensitive (when properly configured)',
+			code: createCredentialCode([
+				createProperty('Certificate', 'certificate', { password: true }),
+				createProperty('CA Certificate', 'caCert', { password: true }),
+				createProperty('Client Certificate', 'clientCert', { password: true }),
+			]),
+		},
+		{
+			name: 'URL fields containing sensitive keywords should not be flagged',
+			code: createCredentialCode([
+				createProperty('Token URL', 'tokenUrl'),
+				createProperty('Authorization URL', 'authorizationUrl'),
+				createProperty('Access Token URL', 'accessTokenUrl'),
+			]),
+		},
+		{
+			name: 'ID fields containing sensitive keywords should not be flagged',
+			code: createCredentialCode([
+				createProperty('Access Key ID', 'accessKeyId'),
+				createProperty('Key ID', 'keyId'),
+				createProperty('User ID', 'userId'),
+			]),
+		},
+		{
+			name: 'file path and name fields should not be flagged',
+			code: createCredentialCode([
+				createProperty('Key File Path', 'keyPath'),
+				createProperty('Key File Name', 'keyFile'),
+				createProperty('Certificate Path', 'keyName'),
+			]),
+		},
+		{
+			name: 'should flag actual sensitive fields while ignoring false positives',
+			code: createCredentialCode([
+				createProperty('Private Key', 'privateKey', { password: true }),
+				createProperty('Public Key', 'publicKey'), // Should not be flagged
+				createProperty('Secret Token', 'secretToken', { password: true }),
+				createProperty('Client ID', 'clientId'), // Should not be flagged
+			]),
+		},
+	],
+	invalid: [
+		{
+			name: 'password field missing typeOptions.password = true',
+			code: createCredentialCode([createProperty('Password', 'password')]),
+			errors: [{ messageId: 'missingPasswordOption', data: { fieldName: 'password' } }],
+			output: createCredentialCode([createProperty('Password', 'password', { password: true })]),
+		},
+		{
+			name: 'API key field missing typeOptions.password = true',
+			code: createCredentialCode([createProperty('API Key', 'apiKey')]),
+			errors: [{ messageId: 'missingPasswordOption', data: { fieldName: 'apiKey' } }],
+			output: createCredentialCode([createProperty('API Key', 'apiKey', { password: true })]),
+		},
+		{
+			name: 'secret field missing typeOptions.password = true',
+			code: createCredentialCode([createProperty('Client Secret', 'clientSecret')]),
+			errors: [{ messageId: 'missingPasswordOption', data: { fieldName: 'clientSecret' } }],
+			output: createCredentialCode([
+				createProperty('Client Secret', 'clientSecret', { password: true }),
+			]),
+		},
+		{
+			name: 'multiple invalid fields',
+			code: createCredentialCode([
+				createProperty('Password', 'password'),
+				createProperty('Username', 'username'),
+				createProperty('Access Token', 'accessToken'),
+			]),
+			errors: [
+				{ messageId: 'missingPasswordOption', data: { fieldName: 'password' } },
+				{ messageId: 'missingPasswordOption', data: { fieldName: 'accessToken' } },
+			],
+			output: createCredentialCode([
+				createProperty('Password', 'password', { password: true }),
+				createProperty('Username', 'username'),
+				createProperty('Access Token', 'accessToken', { password: true }),
+			]),
+		},
+		{
+			name: 'field has typeOptions but password is false',
+			code: createCredentialCode([createProperty('API Key', 'apiKey', { password: false })]),
+			errors: [{ messageId: 'missingPasswordOption', data: { fieldName: 'apiKey' } }],
+			output: createCredentialCode([createProperty('API Key', 'apiKey', { password: true })]),
+		},
+		{
+			name: 'OAuth2 credential with missing password protection for clientSecret',
+			code: createOAuth2CredentialCode(false),
+			errors: [{ messageId: 'missingPasswordOption', data: { fieldName: 'clientSecret' } }],
+			output: createOAuth2CredentialCode(true),
+		},
+		{
+			name: 'field has empty typeOptions object',
+			code: createCredentialCode([
+				createProperty('Access Token', 'accessToken', { emptyTypeOptions: true }),
+			]),
+			errors: [{ messageId: 'missingPasswordOption', data: { fieldName: 'accessToken' } }],
+			output: createCredentialCode([
+				createProperty('Access Token', 'accessToken', { password: true }),
+			]),
+		},
+		{
+			name: 'certificate fields should require password protection',
+			code: createCredentialCode([
+				createProperty('Certificate', 'certificate'),
+				createProperty('Client Certificate', 'clientCert'),
+			]),
+			errors: [
+				{ messageId: 'missingPasswordOption', data: { fieldName: 'certificate' } },
+				{ messageId: 'missingPasswordOption', data: { fieldName: 'clientCert' } },
+			],
+			output: createCredentialCode([
+				createProperty('Certificate', 'certificate', { password: true }),
+				createProperty('Client Certificate', 'clientCert', { password: true }),
+			]),
+		},
+	],
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/credential-password-field.ts

@@ -0,0 +1,141 @@
+import { TSESTree } from '@typescript-eslint/types';
+import type { ReportFixFunction } from '@typescript-eslint/utils/ts-eslint';
+
+import {
+	isCredentialTypeClass,
+	findClassProperty,
+	findObjectProperty,
+	getStringLiteralValue,
+	getBooleanLiteralValue,
+	createRule,
+} from '../utils/index.js';
+
+const SENSITIVE_PATTERNS = [
+	'password',
+	'secret',
+	'token',
+	'cert',
+	'passphrase',
+	'apikey',
+	'secretkey',
+	'privatekey',
+	'authkey',
+];
+
+const NON_SENSITIVE_PATTERNS = ['url', 'pub', 'id'];
+
+function isSensitiveFieldName(name: string): boolean {
+	const lowerName = name.toLowerCase();
+
+	if (NON_SENSITIVE_PATTERNS.some((pattern) => lowerName.includes(pattern))) {
+		return false;
+	}
+
+	return SENSITIVE_PATTERNS.some((pattern) => lowerName.includes(pattern));
+}
+
+function hasPasswordTypeOption(element: TSESTree.ObjectExpression): boolean {
+	const typeOptionsProperty = findObjectProperty(element, 'typeOptions');
+
+	if (typeOptionsProperty?.value.type !== TSESTree.AST_NODE_TYPES.ObjectExpression) {
+		return false;
+	}
+
+	const passwordProperty = findObjectProperty(typeOptionsProperty.value, 'password');
+	const passwordValue = passwordProperty ? getBooleanLiteralValue(passwordProperty.value) : null;
+
+	return passwordValue === true;
+}
+
+function createPasswordFix(
+	element: TSESTree.ObjectExpression,
+	typeOptionsProperty: TSESTree.Property | null,
+): ReportFixFunction {
+	return (fixer) => {
+		if (typeOptionsProperty?.value.type === TSESTree.AST_NODE_TYPES.ObjectExpression) {
+			const passwordProperty = findObjectProperty(typeOptionsProperty.value, 'password');
+
+			if (passwordProperty) {
+				return fixer.replaceText(passwordProperty.value, 'true');
+			}
+
+			const objectValue = typeOptionsProperty.value;
+			if (objectValue.properties.length > 0) {
+				const lastProperty = objectValue.properties[objectValue.properties.length - 1];
+				if (lastProperty) {
+					return fixer.insertTextAfter(lastProperty, ', password: true');
+				}
+			} else {
+				const range = objectValue.range;
+				if (range) {
+					const openBrace = range[0] + 1;
+					return fixer.insertTextAfterRange([openBrace, openBrace], ' password: true ');
+				}
+			}
+		}
+
+		const lastProperty = element.properties[element.properties.length - 1];
+		if (lastProperty) {
+			return fixer.insertTextAfter(lastProperty, ',\n\t\t\ttypeOptions: { password: true }');
+		}
+		return null;
+	};
+}
+
+export const CredentialPasswordFieldRule = createRule({
+	name: 'credential-password-field',
+	meta: {
+		type: 'problem',
+		docs: {
+			description: 'Ensure credential fields with sensitive names have typeOptions.password = true',
+		},
+		messages: {
+			missingPasswordOption:
+				"Field '{{ fieldName }}' appears to be a sensitive field but is missing 'typeOptions: { password: true }'",
+		},
+		fixable: 'code',
+		schema: [],
+	},
+	defaultOptions: [],
+	create(context) {
+		return {
+			ClassDeclaration(node) {
+				if (!isCredentialTypeClass(node)) {
+					return;
+				}
+
+				const propertiesProperty = findClassProperty(node, 'properties');
+				if (
+					!propertiesProperty?.value ||
+					propertiesProperty.value.type !== TSESTree.AST_NODE_TYPES.ArrayExpression
+				) {
+					return;
+				}
+
+				for (const element of propertiesProperty.value.elements) {
+					if (element?.type !== TSESTree.AST_NODE_TYPES.ObjectExpression) {
+						continue;
+					}
+
+					const nameProperty = findObjectProperty(element, 'name');
+					const fieldName = nameProperty ? getStringLiteralValue(nameProperty.value) : null;
+
+					if (!fieldName || !isSensitiveFieldName(fieldName)) {
+						continue;
+					}
+
+					if (!hasPasswordTypeOption(element)) {
+						const typeOptionsProperty = findObjectProperty(element, 'typeOptions');
+
+						context.report({
+							node: element,
+							messageId: 'missingPasswordOption',
+							data: { fieldName },
+							fix: createPasswordFix(element, typeOptionsProperty),
+						});
+					}
+				}
+			},
+		};
+	},
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/credential-test-required.test.ts

@@ -0,0 +1,174 @@
+import { RuleTester } from '@typescript-eslint/rule-tester';
+
+import { CredentialTestRequiredRule } from './credential-test-required.js';
+
+const ruleTester = new RuleTester();
+
+// Helper function to create credential class code
+function createCredentialCode(options: {
+	name?: string;
+	displayName?: string;
+	hasTest?: boolean;
+	extends?: string[];
+	extraProperties?: string;
+}): string {
+	const {
+		name = 'myApi',
+		displayName = 'My API',
+		hasTest = false,
+		extends: extendsArray,
+		extraProperties = '',
+	} = options;
+
+	const imports = hasTest
+		? "import type { ICredentialTestRequest, ICredentialType, INodeProperties } from 'n8n-workflow';"
+		: "import type { ICredentialType, INodeProperties } from 'n8n-workflow';";
+
+	const extendsStr = extendsArray ? `\n\textends = ${JSON.stringify(extendsArray)};` : '';
+
+	const testProperty = hasTest
+		? "\n\n\ttest: ICredentialTestRequest = {\n\t\trequest: {\n\t\t\tbaseURL: 'https://api.example.com',\n\t\t\turl: '/test',\n\t\t},\n\t};"
+		: '';
+
+	return `
+${imports}
+
+export class ${name.charAt(0).toUpperCase() + name.slice(1)} implements ICredentialType {
+	name = '${name}';${extendsStr}
+	displayName = '${displayName}';
+	properties: INodeProperties[] = [];${testProperty}${extraProperties}
+}`;
+}
+
+function createNonCredentialClass(className: string = 'SomeOtherClass'): string {
+	return `
+export class ${className} {
+	name = 'notACredential';
+}`;
+}
+
+ruleTester.run('credential-test-required', CredentialTestRequiredRule, {
+	valid: [
+		{
+			name: 'credential class with test property',
+			filename: 'MyApi.credentials.ts',
+			code: createCredentialCode({ hasTest: true }),
+		},
+		{
+			name: 'credential class extending oAuth2Api (exempt)',
+			filename: 'MyOAuth2Api.credentials.ts',
+			code: createCredentialCode({
+				name: 'myOAuth2Api',
+				displayName: 'My OAuth2 API',
+				extends: ['oAuth2Api'],
+			}),
+		},
+		{
+			name: 'non-credential class ignored',
+			filename: 'MyApi.credentials.ts',
+			code: createNonCredentialClass(),
+		},
+		{
+			name: 'non-credential file ignored',
+			filename: 'regular-file.ts',
+			code: createCredentialCode({}),
+		},
+	],
+	invalid: [
+		{
+			name: 'credential class missing test property and no testedBy in package',
+			filename: 'MyApi.credentials.ts',
+			code: createCredentialCode({}),
+			errors: [
+				{
+					messageId: 'missingCredentialTest',
+					data: { className: 'MyApi' },
+					suggestions: [
+						{
+							messageId: 'addTemplate',
+							output: `
+import type { ICredentialType, INodeProperties } from 'n8n-workflow';
+
+export class MyApi implements ICredentialType {
+	name = 'myApi';
+	displayName = 'My API';
+	properties: INodeProperties[] = [];
+
+	test: ICredentialTestRequest = {
+		request: {
+			method: 'GET',
+			url: '={{$credentials.server}}/test', // Replace with actual endpoint
+		},
+	};
+}`,
+						},
+					],
+				},
+			],
+		},
+		{
+			name: 'credential class with extends but not oAuth2Api and no testedBy in package',
+			filename: 'MyApi.credentials.ts',
+			code: createCredentialCode({ extends: ['someOtherApi'] }),
+			errors: [
+				{
+					messageId: 'missingCredentialTest',
+					data: { className: 'MyApi' },
+					suggestions: [
+						{
+							messageId: 'addTemplate',
+							output: `
+import type { ICredentialType, INodeProperties } from 'n8n-workflow';
+
+export class MyApi implements ICredentialType {
+	name = 'myApi';
+	extends = ["someOtherApi"];
+	displayName = 'My API';
+	properties: INodeProperties[] = [];
+
+	test: ICredentialTestRequest = {
+		request: {
+			method: 'GET',
+			url: '={{$credentials.server}}/test', // Replace with actual endpoint
+		},
+	};
+}`,
+						},
+					],
+				},
+			],
+		},
+		{
+			name: 'credential class with empty extends array and no testedBy in package',
+			filename: 'MyApi.credentials.ts',
+			code: createCredentialCode({ extends: [] }),
+			errors: [
+				{
+					messageId: 'missingCredentialTest',
+					data: { className: 'MyApi' },
+					suggestions: [
+						{
+							messageId: 'addTemplate',
+							output: `
+import type { ICredentialType, INodeProperties } from 'n8n-workflow';
+
+export class MyApi implements ICredentialType {
+	name = 'myApi';
+	extends = [];
+	displayName = 'My API';
+	properties: INodeProperties[] = [];
+
+	test: ICredentialTestRequest = {
+		request: {
+			method: 'GET',
+			url: '={{$credentials.server}}/test', // Replace with actual endpoint
+		},
+	};
+}`,
+						},
+					],
+				},
+			],
+		},
+	],
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/credential-test-required.ts

@@ -0,0 +1,145 @@
+import type { ReportSuggestionArray } from '@typescript-eslint/utils/ts-eslint';
+import { dirname } from 'node:path';
+
+import {
+	isCredentialTypeClass,
+	findClassProperty,
+	hasArrayLiteralValue,
+	isFileType,
+	getStringLiteralValue,
+	findPackageJson,
+	areAllCredentialUsagesTestedByNodes,
+	createRule,
+} from '../utils/index.js';
+
+export const CredentialTestRequiredRule = createRule({
+	name: 'credential-test-required',
+	meta: {
+		type: 'problem',
+		docs: {
+			description: 'Ensure credentials have a credential test',
+		},
+		messages: {
+			addTemplate: 'Add basic credential test template',
+			missingCredentialTest:
+				'Credential class "{{ className }}" must have a test property or be tested by a node via testedBy',
+		},
+		schema: [],
+		hasSuggestions: true,
+	},
+	defaultOptions: [],
+	create(context) {
+		if (!isFileType(context.filename, '.credentials.ts')) {
+			return {};
+		}
+
+		let packageDir: string | null = null;
+
+		const getPackageDir = (): string | null => {
+			if (packageDir !== null) {
+				return packageDir;
+			}
+
+			const packageJsonPath = findPackageJson(context.filename);
+			if (!packageJsonPath) {
+				packageDir = '';
+				return packageDir;
+			}
+
+			packageDir = dirname(packageJsonPath);
+			return packageDir;
+		};
+
+		return {
+			ClassDeclaration(node) {
+				if (!isCredentialTypeClass(node)) {
+					return;
+				}
+
+				const extendsProperty = findClassProperty(node, 'extends');
+				if (extendsProperty && hasArrayLiteralValue(extendsProperty, 'oAuth2Api')) {
+					return;
+				}
+
+				const testProperty = findClassProperty(node, 'test');
+				if (testProperty) {
+					return;
+				}
+
+				const nameProperty = findClassProperty(node, 'name');
+				if (!nameProperty) {
+					return;
+				}
+
+				const credentialName = getStringLiteralValue(nameProperty.value);
+				if (!credentialName) {
+					return;
+				}
+
+				const pkgDir = getPackageDir();
+				if (!pkgDir) {
+					const suggestions: ReportSuggestionArray<'addTemplate' | 'missingCredentialTest'> = [];
+
+					const testProperty = createCredentialTestTemplate();
+					suggestions.push({
+						messageId: 'addTemplate',
+						fix(fixer) {
+							const classBody = node.body.body;
+							const lastProperty = classBody[classBody.length - 1];
+							if (lastProperty) {
+								return fixer.insertTextAfter(lastProperty, `\n\n${testProperty}`);
+							}
+							return null;
+						},
+					});
+
+					context.report({
+						node,
+						messageId: 'missingCredentialTest',
+						data: {
+							className: node.id?.name ?? 'Unknown',
+						},
+						suggest: suggestions,
+					});
+					return;
+				}
+
+				const allUsagesTestedByNodes = areAllCredentialUsagesTestedByNodes(credentialName, pkgDir);
+				if (!allUsagesTestedByNodes) {
+					const suggestions: ReportSuggestionArray<'addTemplate' | 'missingCredentialTest'> = [];
+
+					const testProperty = createCredentialTestTemplate();
+					suggestions.push({
+						messageId: 'addTemplate',
+						fix(fixer) {
+							const classBody = node.body.body;
+							const lastProperty = classBody[classBody.length - 1];
+							if (lastProperty) {
+								return fixer.insertTextAfter(lastProperty, `\n\n${testProperty}`);
+							}
+							return null;
+						},
+					});
+
+					context.report({
+						node,
+						messageId: 'missingCredentialTest',
+						data: {
+							className: node.id?.name ?? 'Unknown',
+						},
+						suggest: suggestions,
+					});
+				}
+			},
+		};
+	},
+});
+
+function createCredentialTestTemplate(): string {
+	return `\ttest: ICredentialTestRequest = {
+\t\trequest: {
+\t\t\tmethod: 'GET',
+\t\t\turl: '={{$credentials.server}}/test', // Replace with actual endpoint
+\t\t},
+\t};`;
+}

packages/@n8n/eslint-plugin-community-nodes/src/rules/icon-validation.test.ts

@@ -0,0 +1,279 @@
+import { RuleTester } from '@typescript-eslint/rule-tester';
+import * as fs from 'node:fs';
+import { vi } from 'vitest';
+
+import { IconValidationRule } from './icon-validation.js';
+
+const ruleTester = new RuleTester();
+
+vi.mock('node:fs', () => ({
+	existsSync: vi.fn(),
+	readdirSync: vi.fn(),
+}));
+
+const mockExistsSync = vi.mocked(fs.existsSync);
+const mockReaddirSync = vi.mocked(fs.readdirSync);
+
+const mockSvgFiles = [
+	'TestNode.svg',
+	'ValidIcon.svg',
+	'ValidIcon.dark.svg',
+	'SameIcon.svg',
+	'github.svg',
+];
+
+function setupMockFileSystem() {
+	mockExistsSync.mockImplementation((path: fs.PathLike) => {
+		const pathStr = path.toString();
+
+		if (mockSvgFiles.some((file) => pathStr.includes(file)) || pathStr.includes('NotSvg.png')) {
+			return true;
+		}
+
+		if (pathStr.endsWith('/tmp/icons') || pathStr.endsWith('/tmp') || pathStr.endsWith('icons')) {
+			return true;
+		}
+
+		return false;
+	});
+
+	// @ts-expect-error Typescript does not select the correct overload
+	mockReaddirSync.mockImplementation((path: fs.PathLike): string[] => {
+		const pathStr = path.toString();
+
+		if (pathStr.includes('icons')) {
+			return [...mockSvgFiles, 'NotSvg.png'];
+		}
+
+		return [];
+	});
+}
+
+setupMockFileSystem();
+
+const nodeFilePath = '/tmp/TestNode.node.ts';
+const credentialFilePath = '/tmp/TestCredential.credentials.ts';
+
+function createNodeCode(
+	icon?: string | { light: string; dark: string },
+	includeTypeImport: boolean = false,
+): string {
+	const typeImport = includeTypeImport
+		? "import type { INodeType, INodeTypeDescription } from 'n8n-workflow';"
+		: "import type { INodeType } from 'n8n-workflow';";
+
+	const typeAnnotation = includeTypeImport ? ': INodeTypeDescription' : '';
+
+	let iconProperty = '';
+	if (icon) {
+		if (typeof icon === 'string') {
+			iconProperty = `icon: '${icon}',`;
+		} else {
+			iconProperty = `icon: {
+			light: '${icon.light}',
+			dark: '${icon.dark}'
+		},`;
+		}
+	}
+
+	return `
+${typeImport}
+
+export class TestNode implements INodeType {
+	description${typeAnnotation} = {
+		displayName: 'Test Node',
+		name: 'testNode',
+		${iconProperty}
+		group: ['input'],
+		version: 1,
+		description: 'A test node',
+		defaults: {
+			name: 'Test Node',
+		},
+		inputs: ['main'],
+		outputs: ['main'],
+		properties: [],
+	};
+}`;
+}
+
+function createCredentialCode(icon?: string | { light: string; dark: string }): string {
+	let iconProperty = '';
+	if (icon) {
+		if (typeof icon === 'string') {
+			iconProperty = `icon = '${icon}';`;
+		} else {
+			iconProperty = `icon = {
+		light: '${icon.light}',
+		dark: '${icon.dark}'
+	};`;
+		}
+	}
+
+	return `
+import type { ICredentialType, INodeProperties } from 'n8n-workflow';
+
+export class TestCredential implements ICredentialType {
+	name = 'testApi';
+	displayName = 'Test API';
+	${iconProperty}
+	properties: INodeProperties[] = [];
+}`;
+}
+
+// Helper function to create non-node class
+function createNonNodeClass(icon: string): string {
+	return `
+export class NotANode {
+	icon = '${icon}';
+}`;
+}
+
+ruleTester.run('icon-validation', IconValidationRule, {
+	valid: [
+		{
+			name: 'non-node class ignored',
+			filename: nodeFilePath,
+			code: createNonNodeClass('file:nonexistent.png'),
+		},
+		{
+			name: 'non-node file ignored',
+			filename: '/tmp/regular-file.ts',
+			code: createNodeCode('file:nonexistent.svg'),
+		},
+		{
+			name: 'node with valid string icon in description',
+			filename: nodeFilePath,
+			code: createNodeCode('file:icons/TestNode.svg', true),
+		},
+		{
+			name: 'node with valid light/dark icons in description',
+			filename: nodeFilePath,
+			code: createNodeCode(
+				{
+					light: 'file:icons/ValidIcon.svg',
+					dark: 'file:icons/ValidIcon.dark.svg',
+				},
+				true,
+			),
+		},
+		{
+			name: 'credential with valid string icon',
+			filename: credentialFilePath,
+			code: createCredentialCode('file:icons/TestNode.svg'),
+		},
+		{
+			name: 'credential with valid light/dark icons',
+			filename: credentialFilePath,
+			code: createCredentialCode({
+				light: 'file:icons/ValidIcon.svg',
+				dark: 'file:icons/ValidIcon.dark.svg',
+			}),
+		},
+	],
+	invalid: [
+		{
+			name: 'node missing icon property in description',
+			filename: nodeFilePath,
+			code: createNodeCode(undefined, true),
+			errors: [
+				{
+					messageId: 'missingIcon',
+					suggestions: [
+						{
+							messageId: 'addPlaceholder',
+							output:
+								"\nimport type { INodeType, INodeTypeDescription } from 'n8n-workflow';\n\nexport class TestNode implements INodeType {\n\tdescription: INodeTypeDescription = {\n\t\tdisplayName: 'Test Node',\n\t\tname: 'testNode',\n\t\t\n\t\tgroup: ['input'],\n\t\tversion: 1,\n\t\tdescription: 'A test node',\n\t\tdefaults: {\n\t\t\tname: 'Test Node',\n\t\t},\n\t\tinputs: ['main'],\n\t\toutputs: ['main'],\n\t\tproperties: [],\n\t\ticon: \"file:./icon.svg\",\n\t};\n}",
+						},
+					],
+				},
+			],
+		},
+		{
+			name: 'icon file does not exist in description',
+			filename: nodeFilePath,
+			code: createNodeCode('file:icons/NonExistent.svg', true),
+			errors: [{ messageId: 'iconFileNotFound', data: { iconPath: 'icons/NonExistent.svg' } }],
+		},
+		{
+			name: 'light and dark icons are the same file in description',
+			filename: nodeFilePath,
+			code: createNodeCode(
+				{
+					light: 'file:icons/SameIcon.svg',
+					dark: 'file:icons/SameIcon.svg',
+				},
+				true,
+			),
+			errors: [{ messageId: 'lightDarkSame', data: { iconPath: 'icons/SameIcon.svg' } }],
+		},
+		{
+			name: 'credential missing icon property',
+			filename: credentialFilePath,
+			code: createCredentialCode(),
+			errors: [
+				{
+					messageId: 'missingIcon',
+					suggestions: [
+						{
+							messageId: 'addPlaceholder',
+							output:
+								"\nimport type { ICredentialType, INodeProperties } from 'n8n-workflow';\n\nexport class TestCredential implements ICredentialType {\n\tname = 'testApi';\n\tdisplayName = 'Test API';\n\t\n\tproperties: INodeProperties[] = [];\n\n\ticon = \"file:./icon.svg\";\n}",
+						},
+					],
+				},
+			],
+		},
+		{
+			name: 'credential icon file does not exist',
+			filename: credentialFilePath,
+			code: createCredentialCode('file:icons/NonExistent.svg'),
+			errors: [{ messageId: 'iconFileNotFound', data: { iconPath: 'icons/NonExistent.svg' } }],
+		},
+		{
+			name: 'credential light and dark icons are the same file',
+			filename: credentialFilePath,
+			code: createCredentialCode({
+				light: 'file:icons/SameIcon.svg',
+				dark: 'file:icons/SameIcon.svg',
+			}),
+			errors: [{ messageId: 'lightDarkSame', data: { iconPath: 'icons/SameIcon.svg' } }],
+		},
+		{
+			name: 'node icon file does not exist but similar file exists - should suggest similar file',
+			filename: nodeFilePath,
+			code: createNodeCode('file:icons/github2.svg'),
+			errors: [
+				{
+					messageId: 'iconFileNotFound',
+					data: { iconPath: 'icons/github2.svg' },
+					suggestions: [
+						{
+							messageId: 'similarIcon',
+							data: { suggestedName: 'icons/github.svg' },
+							output: `
+import type { INodeType } from 'n8n-workflow';
+
+export class TestNode implements INodeType {
+	description = {
+		displayName: 'Test Node',
+		name: 'testNode',
+		icon: "file:icons/github.svg",
+		group: ['input'],
+		version: 1,
+		description: 'A test node',
+		defaults: {
+			name: 'Test Node',
+		},
+		inputs: ['main'],
+		outputs: ['main'],
+		properties: [],
+	};
+}`,
+						},
+					],
+				},
+			],
+		},
+	],
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/icon-validation.ts

@@ -0,0 +1,239 @@
+import { TSESTree } from '@typescript-eslint/utils';
+import type { ReportSuggestionArray } from '@typescript-eslint/utils/ts-eslint';
+import { dirname } from 'node:path';
+
+import {
+	isNodeTypeClass,
+	isCredentialTypeClass,
+	findClassProperty,
+	findObjectProperty,
+	getStringLiteralValue,
+	validateIconPath,
+	findSimilarSvgFiles,
+	isFileType,
+	createRule,
+} from '../utils/index.js';
+
+const messages = {
+	iconFileNotFound: 'Icon file "{{ iconPath }}" does not exist',
+	iconNotSvg: 'Icon file "{{ iconPath }}" must be an SVG file (end with .svg)',
+	lightDarkSame: 'Light and dark icons cannot be the same file. Both point to "{{ iconPath }}"',
+	invalidIconPath: 'Icon path "{{ iconPath }}" must use file: protocol and be a string',
+	missingIcon: 'Node/Credential class must have an icon property defined',
+	addPlaceholder: 'Add icon property with placeholder',
+	addFileProtocol: "Add 'file:' protocol to icon path",
+	changeExtension: "Change icon extension to '.svg'",
+	similarIcon: "Use existing icon '{{ suggestedName }}'",
+} as const;
+
+export const IconValidationRule = createRule({
+	name: 'icon-validation',
+	meta: {
+		type: 'problem',
+		docs: {
+			description:
+				'Validate node and credential icon files exist, are SVG format, and light/dark icons are different',
+		},
+		messages,
+		schema: [],
+		hasSuggestions: true,
+	},
+	defaultOptions: [],
+	create(context) {
+		if (
+			!isFileType(context.filename, '.node.ts') &&
+			!isFileType(context.filename, '.credentials.ts')
+		) {
+			return {};
+		}
+
+		const validateIcon = (iconPath: string | null, node: TSESTree.Node): boolean => {
+			if (!iconPath) {
+				context.report({
+					node,
+					messageId: 'invalidIconPath',
+					data: { iconPath: iconPath ?? '' },
+				});
+				return false;
+			}
+
+			const currentDir = dirname(context.filename);
+			const validation = validateIconPath(iconPath, currentDir);
+
+			if (!validation.isFile) {
+				const suggestions: ReportSuggestionArray<keyof typeof messages> = [];
+				if (!iconPath.startsWith('file:')) {
+					suggestions.push({
+						messageId: 'addFileProtocol',
+						fix(fixer) {
+							return fixer.replaceText(node, `"file:${iconPath}"`);
+						},
+					});
+				}
+
+				context.report({
+					node,
+					messageId: 'invalidIconPath',
+					data: { iconPath },
+					suggest: suggestions,
+				});
+				return false;
+			}
+
+			if (!validation.isSvg) {
+				const relativePath = iconPath.replace(/^file:/, '');
+				const suggestions: ReportSuggestionArray<keyof typeof messages> = [];
+
+				const pathWithoutExt = relativePath.replace(/\.[^/.]+$/, '');
+				const svgPath = `${pathWithoutExt}.svg`;
+				suggestions.push({
+					messageId: 'changeExtension',
+					fix(fixer) {
+						return fixer.replaceText(node, `"file:${svgPath}"`);
+					},
+				});
+
+				context.report({
+					node,
+					messageId: 'iconNotSvg',
+					data: { iconPath: relativePath },
+					suggest: suggestions,
+				});
+				return false;
+			}
+
+			if (!validation.exists) {
+				const relativePath = iconPath.replace(/^file:/, '');
+				const suggestions: ReportSuggestionArray<keyof typeof messages> = [];
+
+				// Find similar SVG files in the same directory
+				const similarFiles = findSimilarSvgFiles(relativePath, currentDir);
+				for (const similarFile of similarFiles) {
+					suggestions.push({
+						messageId: 'similarIcon',
+						data: { suggestedName: similarFile },
+						fix(fixer) {
+							return fixer.replaceText(node, `"file:${similarFile}"`);
+						},
+					});
+				}
+
+				context.report({
+					node,
+					messageId: 'iconFileNotFound',
+					data: { iconPath: relativePath },
+					suggest: suggestions,
+				});
+				return false;
+			}
+
+			return true;
+		};
+
+		const validateIconValue = (iconValue: TSESTree.Node) => {
+			if (iconValue.type === TSESTree.AST_NODE_TYPES.Literal) {
+				const iconPath = getStringLiteralValue(iconValue);
+				validateIcon(iconPath, iconValue);
+			} else if (iconValue.type === TSESTree.AST_NODE_TYPES.ObjectExpression) {
+				const lightProperty = findObjectProperty(iconValue, 'light');
+				const darkProperty = findObjectProperty(iconValue, 'dark');
+
+				const lightPath = lightProperty ? getStringLiteralValue(lightProperty.value) : null;
+				const darkPath = darkProperty ? getStringLiteralValue(darkProperty.value) : null;
+
+				if (lightProperty) {
+					validateIcon(lightPath, lightProperty.value);
+				}
+				if (darkProperty) {
+					validateIcon(darkPath, darkProperty.value);
+				}
+
+				if (lightPath && darkPath && lightPath === darkPath && lightProperty) {
+					context.report({
+						node: lightProperty.value,
+						messageId: 'lightDarkSame',
+						data: { iconPath: lightPath.replace(/^file:/, '') },
+					});
+				}
+			}
+		};
+
+		return {
+			ClassDeclaration(node) {
+				const isNodeClass = isNodeTypeClass(node);
+				const isCredentialClass = isCredentialTypeClass(node);
+
+				if (!isNodeClass && !isCredentialClass) {
+					return;
+				}
+
+				if (isNodeClass) {
+					const descriptionProperty = findClassProperty(node, 'description');
+					if (
+						!descriptionProperty?.value ||
+						descriptionProperty.value.type !== TSESTree.AST_NODE_TYPES.ObjectExpression
+					) {
+						context.report({
+							node,
+							messageId: 'missingIcon',
+						});
+						return;
+					}
+
+					const descriptionValue = descriptionProperty.value;
+					const iconProperty = findObjectProperty(descriptionValue, 'icon');
+					if (!iconProperty) {
+						const suggestions: ReportSuggestionArray<keyof typeof messages> = [];
+
+						suggestions.push({
+							messageId: 'addPlaceholder',
+							fix(fixer) {
+								const lastProperty =
+									descriptionValue.properties[descriptionValue.properties.length - 1];
+								if (lastProperty) {
+									return fixer.insertTextAfter(lastProperty, ',\n\t\ticon: "file:./icon.svg"');
+								}
+								return null;
+							},
+						});
+
+						context.report({
+							node,
+							messageId: 'missingIcon',
+							suggest: suggestions,
+						});
+						return;
+					}
+
+					validateIconValue(iconProperty.value);
+				} else if (isCredentialClass) {
+					const iconProperty = findClassProperty(node, 'icon');
+					if (!iconProperty?.value) {
+						const suggestions: ReportSuggestionArray<keyof typeof messages> = [];
+
+						suggestions.push({
+							messageId: 'addPlaceholder',
+							fix(fixer) {
+								const classBody = node.body.body;
+								const lastProperty = classBody[classBody.length - 1];
+								if (lastProperty) {
+									return fixer.insertTextAfter(lastProperty, '\n\n\ticon = "file:./icon.svg";');
+								}
+								return null;
+							},
+						});
+
+						context.report({
+							node,
+							messageId: 'missingIcon',
+							suggest: suggestions,
+						});
+						return;
+					}
+
+					validateIconValue(iconProperty.value);
+				}
+			},
+		};
+	},
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/index.ts

@@ -0,0 +1,29 @@
+import type { AnyRuleModule } from '@typescript-eslint/utils/ts-eslint';
+
+import { AiNodePackageJsonRule } from './ai-node-package-json.js';
+import { CredentialDocumentationUrlRule } from './credential-documentation-url.js';
+import { CredentialPasswordFieldRule } from './credential-password-field.js';
+import { CredentialTestRequiredRule } from './credential-test-required.js';
+import { IconValidationRule } from './icon-validation.js';
+import { NoCredentialReuseRule } from './no-credential-reuse.js';
+import { NoDeprecatedWorkflowFunctionsRule } from './no-deprecated-workflow-functions.js';
+import { NoRestrictedGlobalsRule } from './no-restricted-globals.js';
+import { NoRestrictedImportsRule } from './no-restricted-imports.js';
+import { NodeUsableAsToolRule } from './node-usable-as-tool.js';
+import { PackageNameConventionRule } from './package-name-convention.js';
+import { ResourceOperationPatternRule } from './resource-operation-pattern.js';
+
+export const rules = {
+	'ai-node-package-json': AiNodePackageJsonRule,
+	'no-restricted-globals': NoRestrictedGlobalsRule,
+	'no-restricted-imports': NoRestrictedImportsRule,
+	'credential-password-field': CredentialPasswordFieldRule,
+	'no-deprecated-workflow-functions': NoDeprecatedWorkflowFunctionsRule,
+	'node-usable-as-tool': NodeUsableAsToolRule,
+	'package-name-convention': PackageNameConventionRule,
+	'credential-test-required': CredentialTestRequiredRule,
+	'no-credential-reuse': NoCredentialReuseRule,
+	'icon-validation': IconValidationRule,
+	'resource-operation-pattern': ResourceOperationPatternRule,
+	'credential-documentation-url': CredentialDocumentationUrlRule,
+} satisfies Record<string, AnyRuleModule>;

packages/@n8n/eslint-plugin-community-nodes/src/rules/no-credential-reuse.test.ts

@@ -0,0 +1,474 @@
+import { RuleTester } from '@typescript-eslint/rule-tester';
+import { vi } from 'vitest';
+
+import { NoCredentialReuseRule } from './no-credential-reuse.js';
+import * as fileUtils from '../utils/file-utils.js';
+
+vi.mock('../utils/file-utils.js', async () => {
+	const actual = await vi.importActual('../utils/file-utils.js');
+	return {
+		...actual,
+		readPackageJsonCredentials: vi.fn(),
+		findPackageJson: vi.fn(),
+	};
+});
+
+const mockReadPackageJsonCredentials = vi.mocked(fileUtils.readPackageJsonCredentials);
+const mockFindPackageJson = vi.mocked(fileUtils.findPackageJson);
+
+const ruleTester = new RuleTester();
+
+const nodeFilePath = '/tmp/TestNode.node.ts';
+
+function createNodeCode(
+	credentials: Array<string | { name: string; required?: boolean }> = [],
+): string {
+	const credentialsArray =
+		credentials.length > 0
+			? credentials
+					.map((cred) => {
+						if (typeof cred === 'string') {
+							return `'${cred}'`;
+						} else {
+							const required =
+								cred.required !== undefined ? `,\n\t\t\t\trequired: ${cred.required}` : '';
+							return `{\n\t\t\t\tname: '${cred.name}'${required},\n\t\t\t}`;
+						}
+					})
+					.join(',\n\t\t\t')
+			: '';
+
+	const credentialsProperty =
+		credentials.length > 0 ? `credentials: [\n\t\t\t${credentialsArray}\n\t\t],` : '';
+
+	return `
+import type { INodeType, INodeTypeDescription } from 'n8n-workflow';
+
+export class TestNode implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Test Node',
+		name: 'testNode',
+		group: ['output'],
+		version: 1,
+		inputs: ['main'],
+		outputs: ['main'],
+		${credentialsProperty}
+		properties: [],
+	};
+}`;
+}
+
+// Helper function to create expected outputs with double quotes (matching rule fix behavior)
+function createExpectedNodeCode(
+	credentials: Array<string | { name: string; required?: boolean }> = [],
+): string {
+	const credentialsArray =
+		credentials.length > 0
+			? credentials
+					.map((cred) => {
+						if (typeof cred === 'string') {
+							return `"${cred}"`;
+						} else {
+							const required =
+								cred.required !== undefined ? `,\n\t\t\t\trequired: ${cred.required}` : '';
+							return `{\n\t\t\t\tname: "${cred.name}"${required},\n\t\t\t}`;
+						}
+					})
+					.join(',\n\t\t\t')
+			: '';
+
+	const credentialsProperty =
+		credentials.length > 0 ? `credentials: [\n\t\t\t${credentialsArray}\n\t\t],` : '';
+
+	return `
+import type { INodeType, INodeTypeDescription } from 'n8n-workflow';
+
+export class TestNode implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Test Node',
+		name: 'testNode',
+		group: ['output'],
+		version: 1,
+		inputs: ['main'],
+		outputs: ['main'],
+		${credentialsProperty}
+		properties: [],
+	};
+}`;
+}
+
+// Helper function to create non-node class
+function createNonNodeClass(): string {
+	return `
+export class RegularClass {
+	credentials = [
+		{ name: 'ExternalApi', required: true }
+	];
+}`;
+}
+
+// Helper function to create non-INodeType class
+function createNonINodeTypeClass(): string {
+	return `
+export class NotANode {
+	description = {
+		displayName: 'Not A Node',
+		credentials: [
+			{ name: 'ExternalApi', required: true }
+		]
+	};
+}`;
+}
+
+function setupMockFileSystem() {
+	mockFindPackageJson.mockReturnValue('/tmp/package.json');
+	mockReadPackageJsonCredentials.mockReturnValue(
+		new Set(['myApiCredential', 'anotherApiCredential']),
+	);
+}
+
+setupMockFileSystem();
+
+ruleTester.run('no-credential-reuse', NoCredentialReuseRule, {
+	valid: [
+		{
+			name: 'node using allowed credential (object form) from same package',
+			filename: nodeFilePath,
+			code: createNodeCode([{ name: 'myApiCredential', required: true }]),
+		},
+		{
+			name: 'node using allowed credential (string form) from same package',
+			filename: nodeFilePath,
+			code: createNodeCode(['myApiCredential']),
+		},
+		{
+			name: 'node using multiple allowed credentials (mixed forms)',
+			filename: nodeFilePath,
+			code: createNodeCode(['myApiCredential', { name: 'anotherApiCredential', required: false }]),
+		},
+		{
+			name: 'node without credentials array',
+			filename: nodeFilePath,
+			code: createNodeCode(),
+		},
+		{
+			name: 'non-node file ignored',
+			filename: '/tmp/regular-file.ts',
+			code: createNonNodeClass(),
+		},
+		{
+			name: 'non-INodeType class ignored',
+			filename: nodeFilePath,
+			code: createNonINodeTypeClass(),
+		},
+	],
+	invalid: [
+		{
+			name: 'SECURITY: node using credential not in package (object form)',
+			filename: nodeFilePath,
+			code: createNodeCode([{ name: 'ExternalApi', required: true }]),
+			errors: [
+				{
+					messageId: 'credentialNotInPackage',
+					data: { credentialName: 'ExternalApi' },
+					suggestions: [
+						{
+							messageId: 'useAvailable',
+							data: { suggestedName: 'myApiCredential' },
+							output: createExpectedNodeCode([{ name: 'myApiCredential', required: true }]),
+						},
+						{
+							messageId: 'useAvailable',
+							data: { suggestedName: 'anotherApiCredential' },
+							output: createExpectedNodeCode([{ name: 'anotherApiCredential', required: true }]),
+						},
+					],
+				},
+			],
+		},
+		{
+			name: 'SECURITY: node using credential not in package (string form)',
+			filename: nodeFilePath,
+			code: createNodeCode(['ExternalApi']),
+			errors: [
+				{
+					messageId: 'credentialNotInPackage',
+					data: { credentialName: 'ExternalApi' },
+					suggestions: [
+						{
+							messageId: 'useAvailable',
+							data: { suggestedName: 'myApiCredential' },
+							output: createExpectedNodeCode(['myApiCredential']),
+						},
+						{
+							messageId: 'useAvailable',
+							data: { suggestedName: 'anotherApiCredential' },
+							output: createExpectedNodeCode(['anotherApiCredential']),
+						},
+					],
+				},
+			],
+		},
+		{
+			name: 'SECURITY: node using mix of allowed and disallowed credentials (mixed forms)',
+			filename: nodeFilePath,
+			code: createNodeCode([
+				'myApiCredential',
+				{ name: 'ExternalApi', required: true },
+				'AnotherExternalApi',
+			]),
+			errors: [
+				{
+					messageId: 'credentialNotInPackage',
+					data: { credentialName: 'ExternalApi' },
+					suggestions: [
+						{
+							messageId: 'useAvailable',
+							data: { suggestedName: 'myApiCredential' },
+							output: `
+import type { INodeType, INodeTypeDescription } from 'n8n-workflow';
+
+export class TestNode implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Test Node',
+		name: 'testNode',
+		group: ['output'],
+		version: 1,
+		inputs: ['main'],
+		outputs: ['main'],
+		credentials: [
+			'myApiCredential',
+			{
+				name: "myApiCredential",
+				required: true,
+			},
+			'AnotherExternalApi'
+		],
+		properties: [],
+	};
+}`,
+						},
+						{
+							messageId: 'useAvailable',
+							data: { suggestedName: 'anotherApiCredential' },
+							output: `
+import type { INodeType, INodeTypeDescription } from 'n8n-workflow';
+
+export class TestNode implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Test Node',
+		name: 'testNode',
+		group: ['output'],
+		version: 1,
+		inputs: ['main'],
+		outputs: ['main'],
+		credentials: [
+			'myApiCredential',
+			{
+				name: "anotherApiCredential",
+				required: true,
+			},
+			'AnotherExternalApi'
+		],
+		properties: [],
+	};
+}`,
+						},
+					],
+				},
+				{
+					messageId: 'credentialNotInPackage',
+					data: { credentialName: 'AnotherExternalApi' },
+					suggestions: [
+						{
+							messageId: 'useAvailable',
+							data: { suggestedName: 'myApiCredential' },
+							output: `
+import type { INodeType, INodeTypeDescription } from 'n8n-workflow';
+
+export class TestNode implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Test Node',
+		name: 'testNode',
+		group: ['output'],
+		version: 1,
+		inputs: ['main'],
+		outputs: ['main'],
+		credentials: [
+			'myApiCredential',
+			{
+				name: 'ExternalApi',
+				required: true,
+			},
+			"myApiCredential"
+		],
+		properties: [],
+	};
+}`,
+						},
+						{
+							messageId: 'useAvailable',
+							data: { suggestedName: 'anotherApiCredential' },
+							output: `
+import type { INodeType, INodeTypeDescription } from 'n8n-workflow';
+
+export class TestNode implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Test Node',
+		name: 'testNode',
+		group: ['output'],
+		version: 1,
+		inputs: ['main'],
+		outputs: ['main'],
+		credentials: [
+			'myApiCredential',
+			{
+				name: 'ExternalApi',
+				required: true,
+			},
+			"anotherApiCredential"
+		],
+		properties: [],
+	};
+}`,
+						},
+					],
+				},
+			],
+		},
+		{
+			name: 'node using multiple disallowed credentials',
+			filename: nodeFilePath,
+			code: createNodeCode([
+				{ name: 'ExternalApi1', required: true },
+				{ name: 'ExternalApi2', required: false },
+			]),
+			errors: [
+				{
+					messageId: 'credentialNotInPackage',
+					data: { credentialName: 'ExternalApi1' },
+					suggestions: [
+						{
+							messageId: 'useAvailable',
+							data: { suggestedName: 'myApiCredential' },
+							output: `
+import type { INodeType, INodeTypeDescription } from 'n8n-workflow';
+
+export class TestNode implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Test Node',
+		name: 'testNode',
+		group: ['output'],
+		version: 1,
+		inputs: ['main'],
+		outputs: ['main'],
+		credentials: [
+			{
+				name: "myApiCredential",
+				required: true,
+			},
+			{
+				name: 'ExternalApi2',
+				required: false,
+			}
+		],
+		properties: [],
+	};
+}`,
+						},
+						{
+							messageId: 'useAvailable',
+							data: { suggestedName: 'anotherApiCredential' },
+							output: `
+import type { INodeType, INodeTypeDescription } from 'n8n-workflow';
+
+export class TestNode implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Test Node',
+		name: 'testNode',
+		group: ['output'],
+		version: 1,
+		inputs: ['main'],
+		outputs: ['main'],
+		credentials: [
+			{
+				name: "anotherApiCredential",
+				required: true,
+			},
+			{
+				name: 'ExternalApi2',
+				required: false,
+			}
+		],
+		properties: [],
+	};
+}`,
+						},
+					],
+				},
+				{
+					messageId: 'credentialNotInPackage',
+					data: { credentialName: 'ExternalApi2' },
+					suggestions: [
+						{
+							messageId: 'useAvailable',
+							data: { suggestedName: 'myApiCredential' },
+							output: `
+import type { INodeType, INodeTypeDescription } from 'n8n-workflow';
+
+export class TestNode implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Test Node',
+		name: 'testNode',
+		group: ['output'],
+		version: 1,
+		inputs: ['main'],
+		outputs: ['main'],
+		credentials: [
+			{
+				name: 'ExternalApi1',
+				required: true,
+			},
+			{
+				name: "myApiCredential",
+				required: false,
+			}
+		],
+		properties: [],
+	};
+}`,
+						},
+						{
+							messageId: 'useAvailable',
+							data: { suggestedName: 'anotherApiCredential' },
+							output: `
+import type { INodeType, INodeTypeDescription } from 'n8n-workflow';
+
+export class TestNode implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Test Node',
+		name: 'testNode',
+		group: ['output'],
+		version: 1,
+		inputs: ['main'],
+		outputs: ['main'],
+		credentials: [
+			{
+				name: 'ExternalApi1',
+				required: true,
+			},
+			{
+				name: "anotherApiCredential",
+				required: false,
+			}
+		],
+		properties: [],
+	};
+}`,
+						},
+					],
+				},
+			],
+		},
+	],
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/no-credential-reuse.ts

@@ -0,0 +1,121 @@
+import { TSESTree } from '@typescript-eslint/types';
+import type { ReportSuggestionArray } from '@typescript-eslint/utils/ts-eslint';
+
+import {
+	isNodeTypeClass,
+	findClassProperty,
+	findArrayLiteralProperty,
+	extractCredentialNameFromArray,
+	findPackageJson,
+	readPackageJsonCredentials,
+	isFileType,
+	findSimilarStrings,
+	createRule,
+} from '../utils/index.js';
+
+export const NoCredentialReuseRule = createRule({
+	name: 'no-credential-reuse',
+	meta: {
+		type: 'problem',
+		docs: {
+			description:
+				'Prevent credential re-use security issues by ensuring nodes only reference credentials from the same package',
+		},
+		messages: {
+			didYouMean: "Did you mean '{{ suggestedName }}'?",
+			useAvailable: "Use available credential '{{ suggestedName }}'",
+			credentialNotInPackage:
+				'SECURITY: Node references credential "{{ credentialName }}" which is not defined in this package. This creates a security risk as it attempts to reuse credentials from other packages. Nodes can only use credentials from the same package as listed in package.json n8n.credentials field.',
+		},
+		schema: [],
+		hasSuggestions: true,
+	},
+	defaultOptions: [],
+	create(context) {
+		if (!isFileType(context.filename, '.node.ts')) {
+			return {};
+		}
+
+		let packageCredentials: Set<string> | null = null;
+
+		const loadPackageCredentials = (): Set<string> => {
+			if (packageCredentials !== null) {
+				return packageCredentials;
+			}
+
+			const packageJsonPath = findPackageJson(context.filename);
+			if (!packageJsonPath) {
+				packageCredentials = new Set();
+				return packageCredentials;
+			}
+
+			packageCredentials = readPackageJsonCredentials(packageJsonPath);
+			return packageCredentials;
+		};
+
+		return {
+			ClassDeclaration(node) {
+				if (!isNodeTypeClass(node)) {
+					return;
+				}
+
+				const descriptionProperty = findClassProperty(node, 'description');
+				if (
+					!descriptionProperty?.value ||
+					descriptionProperty.value.type !== TSESTree.AST_NODE_TYPES.ObjectExpression
+				) {
+					return;
+				}
+
+				const credentialsArray = findArrayLiteralProperty(descriptionProperty.value, 'credentials');
+				if (!credentialsArray) {
+					return;
+				}
+
+				const allowedCredentials = loadPackageCredentials();
+
+				credentialsArray.elements.forEach((element) => {
+					const credentialInfo = extractCredentialNameFromArray(element);
+					if (credentialInfo && !allowedCredentials.has(credentialInfo.name)) {
+						const similarCredentials = findSimilarStrings(credentialInfo.name, allowedCredentials);
+						const suggestions: ReportSuggestionArray<
+							'didYouMean' | 'useAvailable' | 'credentialNotInPackage'
+						> = [];
+
+						for (const similarName of similarCredentials) {
+							suggestions.push({
+								messageId: 'didYouMean',
+								data: { suggestedName: similarName },
+								fix(fixer) {
+									return fixer.replaceText(credentialInfo.node, `"${similarName}"`);
+								},
+							});
+						}
+
+						if (suggestions.length === 0 && allowedCredentials.size > 0) {
+							const availableCredentials = Array.from(allowedCredentials).slice(0, 3);
+							for (const availableName of availableCredentials) {
+								suggestions.push({
+									messageId: 'useAvailable',
+									data: { suggestedName: availableName },
+									fix(fixer) {
+										return fixer.replaceText(credentialInfo.node, `"${availableName}"`);
+									},
+								});
+							}
+						}
+
+						context.report({
+							node: credentialInfo.node,
+							messageId: 'credentialNotInPackage',
+							data: {
+								credentialName: credentialInfo.name,
+							},
+							suggest: suggestions,
+						});
+					}
+				});
+			},
+		};
+	},
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/no-deprecated-workflow-functions.test.ts

@@ -0,0 +1,187 @@
+import { RuleTester } from '@typescript-eslint/rule-tester';
+
+import { NoDeprecatedWorkflowFunctionsRule } from './no-deprecated-workflow-functions.js';
+
+const ruleTester = new RuleTester();
+
+ruleTester.run('no-deprecated-workflow-functions', NoDeprecatedWorkflowFunctionsRule, {
+	valid: [
+		{
+			name: 'using recommended functions and types',
+			code: `
+import { IHttpRequestOptions } from 'n8n-workflow';
+
+const requestOptions: IHttpRequestOptions = {
+	method: 'GET',
+	url: 'https://example.com',
+};
+
+const response1 = await this.helpers.httpRequest(requestOptions);
+const response2 = await this.helpers.httpRequestWithAuthentication.call(this, 'oAuth2Api', {
+	method: 'POST',
+	url: 'https://api.example.com/data',
+});`,
+		},
+		{
+			name: 'functions with similar names should not trigger',
+			code: `
+import { request } from 'axios';
+
+const result = await this.helpers.requestSomething();
+const response = await request('https://api.example.com');
+const config = { request: 'some value' };
+
+// Other objects with helpers property should not trigger
+const otherObject = {
+	helpers: {
+		request: () => 'not n8n',
+		requestWithAuthentication: () => 'not n8n'
+	}
+};
+const result2 = otherObject.helpers.request();`,
+		},
+		{
+			name: 'types with same name from other modules should not trigger',
+			code: `
+import { IRequestOptions } from 'some-other-package';
+
+function test(options: IRequestOptions) {
+	return options.url;
+}`,
+		},
+	],
+	invalid: [
+		{
+			name: 'deprecated request functions',
+			code: `
+const response1 = await this.helpers.request('https://example.com/1');
+const response2 = await this.helpers.requestWithAuthentication.call(this, 'oauth', options);
+const response3 = await this.helpers.requestOAuth2.call(this, 'google', options);`,
+			errors: [
+				{
+					messageId: 'deprecatedRequestFunction',
+					data: { functionName: 'request', replacement: 'httpRequest' },
+					suggestions: [
+						{
+							messageId: 'suggestReplaceFunction',
+							data: { functionName: 'request', replacement: 'httpRequest' },
+							output: `
+const response1 = await this.helpers.httpRequest('https://example.com/1');
+const response2 = await this.helpers.requestWithAuthentication.call(this, 'oauth', options);
+const response3 = await this.helpers.requestOAuth2.call(this, 'google', options);`,
+						},
+					],
+				},
+				{
+					messageId: 'deprecatedRequestFunction',
+					data: {
+						functionName: 'requestWithAuthentication',
+						replacement: 'httpRequestWithAuthentication',
+					},
+					suggestions: [
+						{
+							messageId: 'suggestReplaceFunction',
+							data: {
+								functionName: 'requestWithAuthentication',
+								replacement: 'httpRequestWithAuthentication',
+							},
+							output: `
+const response1 = await this.helpers.request('https://example.com/1');
+const response2 = await this.helpers.httpRequestWithAuthentication.call(this, 'oauth', options);
+const response3 = await this.helpers.requestOAuth2.call(this, 'google', options);`,
+						},
+					],
+				},
+				{
+					messageId: 'deprecatedRequestFunction',
+					data: { functionName: 'requestOAuth2', replacement: 'httpRequestWithAuthentication' },
+					suggestions: [
+						{
+							messageId: 'suggestReplaceFunction',
+							data: { functionName: 'requestOAuth2', replacement: 'httpRequestWithAuthentication' },
+							output: `
+const response1 = await this.helpers.request('https://example.com/1');
+const response2 = await this.helpers.requestWithAuthentication.call(this, 'oauth', options);
+const response3 = await this.helpers.httpRequestWithAuthentication.call(this, 'google', options);`,
+						},
+					],
+				},
+			],
+		},
+		{
+			name: 'deprecated types',
+			code: `
+import { IRequestOptions } from 'n8n-workflow';
+
+function makeRequest(options: IRequestOptions): Promise<any> {
+	return this.helpers.request(options);
+}`,
+			errors: [
+				{
+					messageId: 'deprecatedType',
+					data: { typeName: 'IRequestOptions', replacement: 'IHttpRequestOptions' },
+					suggestions: [
+						{
+							messageId: 'suggestReplaceType',
+							data: { typeName: 'IRequestOptions', replacement: 'IHttpRequestOptions' },
+							output: `
+import { IHttpRequestOptions } from 'n8n-workflow';
+
+function makeRequest(options: IRequestOptions): Promise<any> {
+	return this.helpers.request(options);
+}`,
+						},
+					],
+				},
+				{
+					messageId: 'deprecatedType',
+					data: { typeName: 'IRequestOptions', replacement: 'IHttpRequestOptions' },
+					suggestions: [
+						{
+							messageId: 'suggestReplaceType',
+							data: { typeName: 'IRequestOptions', replacement: 'IHttpRequestOptions' },
+							output: `
+import { IRequestOptions } from 'n8n-workflow';
+
+function makeRequest(options: IHttpRequestOptions): Promise<any> {
+	return this.helpers.request(options);
+}`,
+						},
+					],
+				},
+				{
+					messageId: 'deprecatedRequestFunction',
+					data: { functionName: 'request', replacement: 'httpRequest' },
+					suggestions: [
+						{
+							messageId: 'suggestReplaceFunction',
+							data: { functionName: 'request', replacement: 'httpRequest' },
+							output: `
+import { IRequestOptions } from 'n8n-workflow';
+
+function makeRequest(options: IRequestOptions): Promise<any> {
+	return this.helpers.httpRequest(options);
+}`,
+						},
+					],
+				},
+			],
+		},
+		{
+			name: 'functions without replacement',
+			code: `
+const result = await this.helpers.copyBinaryFile();
+return this.helpers.prepareOutputData([{ json: response }]);`,
+			errors: [
+				{
+					messageId: 'deprecatedWithoutReplacement',
+					data: { functionName: 'copyBinaryFile' },
+				},
+				{
+					messageId: 'deprecatedWithoutReplacement',
+					data: { functionName: 'prepareOutputData' },
+				},
+			],
+		},
+	],
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/no-deprecated-workflow-functions.ts

@@ -0,0 +1,200 @@
+import type { TSESTree } from '@typescript-eslint/utils';
+import { AST_NODE_TYPES } from '@typescript-eslint/utils';
+
+import { createRule } from '../utils/index.js';
+
+const DEPRECATED_FUNCTIONS = {
+	request: 'httpRequest',
+	requestWithAuthentication: 'httpRequestWithAuthentication',
+	requestOAuth1: 'httpRequestWithAuthentication',
+	requestOAuth2: 'httpRequestWithAuthentication',
+	copyBinaryFile: null,
+	prepareOutputData: null,
+} as const;
+
+const DEPRECATED_TYPES = {
+	IRequestOptions: 'IHttpRequestOptions',
+} as const;
+
+function isDeprecatedFunctionName(name: string): name is keyof typeof DEPRECATED_FUNCTIONS {
+	return name in DEPRECATED_FUNCTIONS;
+}
+
+function isDeprecatedTypeName(name: string): name is keyof typeof DEPRECATED_TYPES {
+	return name in DEPRECATED_TYPES;
+}
+
+export const NoDeprecatedWorkflowFunctionsRule = createRule({
+	name: 'no-deprecated-workflow-functions',
+	meta: {
+		type: 'problem',
+		docs: {
+			description: 'Disallow usage of deprecated functions and types from n8n-workflow package',
+		},
+		messages: {
+			deprecatedRequestFunction:
+				"'{{ functionName }}' is deprecated. Use '{{ replacement }}' instead for better authentication support and consistency.",
+			deprecatedFunction: "'{{ functionName }}' is deprecated and should be avoided. {{ message }}",
+			deprecatedType: "'{{ typeName }}' is deprecated. Use '{{ replacement }}' instead.",
+			deprecatedWithoutReplacement:
+				"'{{ functionName }}' is deprecated and should be removed or replaced with alternative implementation.",
+			suggestReplaceFunction: "Replace '{{ functionName }}' with '{{ replacement }}'",
+			suggestReplaceType: "Replace '{{ typeName }}' with '{{ replacement }}'",
+		},
+		schema: [],
+		hasSuggestions: true,
+	},
+	defaultOptions: [],
+	create(context) {
+		const n8nWorkflowTypes = new Set<string>();
+
+		return {
+			ImportDeclaration(node) {
+				if (node.source.value === 'n8n-workflow') {
+					node.specifiers.forEach((specifier) => {
+						if (
+							specifier.type === AST_NODE_TYPES.ImportSpecifier &&
+							specifier.imported.type === AST_NODE_TYPES.Identifier
+						) {
+							n8nWorkflowTypes.add(specifier.local.name);
+						}
+					});
+				}
+			},
+
+			MemberExpression(node) {
+				if (
+					node.property.type === AST_NODE_TYPES.Identifier &&
+					isDeprecatedFunctionName(node.property.name)
+				) {
+					if (!isThisHelpersAccess(node)) {
+						return;
+					}
+
+					const functionName = node.property.name;
+					const replacement = DEPRECATED_FUNCTIONS[functionName];
+
+					if (replacement) {
+						const messageId = functionName.includes('request')
+							? 'deprecatedRequestFunction'
+							: 'deprecatedFunction';
+
+						context.report({
+							node: node.property,
+							messageId,
+							data: {
+								functionName,
+								replacement,
+								message: getDeprecationMessage(functionName),
+							},
+							suggest: [
+								{
+									messageId: 'suggestReplaceFunction',
+									data: { functionName, replacement },
+									fix: (fixer) => fixer.replaceText(node.property, replacement),
+								},
+							],
+						});
+					} else {
+						context.report({
+							node: node.property,
+							messageId: 'deprecatedWithoutReplacement',
+							data: {
+								functionName,
+							},
+						});
+					}
+				}
+			},
+
+			TSTypeReference(node) {
+				if (
+					node.typeName.type === AST_NODE_TYPES.Identifier &&
+					isDeprecatedTypeName(node.typeName.name) &&
+					n8nWorkflowTypes.has(node.typeName.name)
+				) {
+					const typeName = node.typeName.name;
+					const replacement = DEPRECATED_TYPES[typeName];
+
+					context.report({
+						node: node.typeName,
+						messageId: 'deprecatedType',
+						data: {
+							typeName,
+							replacement,
+						},
+						suggest: [
+							{
+								messageId: 'suggestReplaceType',
+								data: { typeName, replacement },
+								fix: (fixer) => fixer.replaceText(node.typeName, replacement),
+							},
+						],
+					});
+				}
+			},
+
+			ImportSpecifier(node) {
+				// Check if this import is from n8n-workflow by looking at the parent ImportDeclaration
+				const importDeclaration = node.parent;
+				if (
+					importDeclaration?.type === AST_NODE_TYPES.ImportDeclaration &&
+					importDeclaration.source.value === 'n8n-workflow' &&
+					node.imported.type === AST_NODE_TYPES.Identifier &&
+					isDeprecatedTypeName(node.imported.name)
+				) {
+					const typeName = node.imported.name;
+					const replacement = DEPRECATED_TYPES[typeName];
+
+					context.report({
+						node: node.imported,
+						messageId: 'deprecatedType',
+						data: {
+							typeName,
+							replacement,
+						},
+						suggest: [
+							{
+								messageId: 'suggestReplaceType',
+								data: { typeName, replacement },
+								fix: (fixer) => fixer.replaceText(node.imported, replacement),
+							},
+						],
+					});
+				}
+			},
+		};
+	},
+});
+
+/**
+ * Check if the MemberExpression follows the this.helpers.* pattern
+ */
+function isThisHelpersAccess(node: TSESTree.MemberExpression): boolean {
+	if (node.object?.type === AST_NODE_TYPES.MemberExpression) {
+		const outerObject = node.object;
+		return (
+			outerObject.object?.type === AST_NODE_TYPES.ThisExpression &&
+			outerObject.property?.type === AST_NODE_TYPES.Identifier &&
+			outerObject.property.name === 'helpers'
+		);
+	}
+	return false;
+}
+
+function getDeprecationMessage(functionName: string): string {
+	switch (functionName) {
+		case 'request':
+			return 'Use httpRequest for better type safety and consistency.';
+		case 'requestWithAuthentication':
+		case 'requestOAuth1':
+		case 'requestOAuth2':
+			return 'Use httpRequestWithAuthentication which provides unified authentication handling.';
+		case 'copyBinaryFile':
+			return 'This function has been removed. Handle binary data directly.';
+		case 'prepareOutputData':
+			return 'This function is deprecated. Return data directly from execute method.';
+		default:
+			return 'This function is deprecated and should be avoided.';
+	}
+}

packages/@n8n/eslint-plugin-community-nodes/src/rules/no-restricted-globals.test.ts

@@ -0,0 +1,136 @@
+import { RuleTester } from '@typescript-eslint/rule-tester';
+
+import { NoRestrictedGlobalsRule } from './no-restricted-globals.js';
+
+const ruleTester = new RuleTester();
+
+ruleTester.run('no-restricted-globals', NoRestrictedGlobalsRule, {
+	valid: [
+		{
+			code: 'const result = someFunction();',
+		},
+		{
+			code: 'window.setTimeout(() => {}, 1000);',
+		},
+		{
+			code: 'const obj = { global: "allowed" };',
+		},
+		{
+			code: 'function process() { return "allowed"; }',
+		},
+		{
+			code: 'console.clearInterval;',
+		},
+		{
+			code: 'const obj = { __dirname: "allowed", Buffer: "allowed", require: "allowed" };',
+		},
+		{
+			code: 'function globalThis() { return "allowed"; }',
+		},
+		{
+			code: 'const helper = require("./helper");',
+		},
+		{
+			name: 'variable declarations should be allowed',
+			code: 'const process = "my-process"; let global = "my-global";',
+		},
+		{
+			name: 'function parameters should be allowed',
+			code: 'function test(process, global, setTimeout) { return process; }',
+		},
+		{
+			name: 'arrow function parameters should be allowed',
+			code: 'const fn = (process, global) => process + global;',
+		},
+		{
+			name: 'destructuring should be allowed',
+			code: 'const { process, global } = someObject; const [setTimeout] = someArray;',
+		},
+		{
+			name: 'class methods should be allowed',
+			code: 'class MyClass { process() {} global = "value"; }',
+		},
+		{
+			name: 'import should be allowed',
+			code: 'import { process } from "./utils";',
+		},
+		{
+			name: 'function expressions should be allowed',
+			code: 'const fn = function process() {}; const fn2 = function global() {};',
+		},
+		{
+			name: 'locally declared variables should not trigger false positives',
+			code: `
+const process = require('process');
+const global = {};
+const setTimeout = () => {};
+function clearInterval() {}
+let setInterval;
+var __dirname = '/path';
+const __filename = 'file.js';
+			`,
+		},
+	],
+	invalid: [
+		{
+			code: 'const pid = process.pid;',
+			errors: [{ messageId: 'restrictedGlobal', data: { name: 'process' } }],
+		},
+		{
+			code: 'global.myVar = "test";',
+			errors: [{ messageId: 'restrictedGlobal', data: { name: 'global' } }],
+		},
+		{
+			code: 'setTimeout(() => {}, 1000);',
+			errors: [{ messageId: 'restrictedGlobal', data: { name: 'setTimeout' } }],
+		},
+		{
+			code: 'clearInterval(timer);',
+			errors: [{ messageId: 'restrictedGlobal', data: { name: 'clearInterval' } }],
+		},
+		{
+			code: 'clearTimeout(timer);',
+			errors: [{ messageId: 'restrictedGlobal', data: { name: 'clearTimeout' } }],
+		},
+		{
+			code: 'setInterval(() => {}, 1000);',
+			errors: [{ messageId: 'restrictedGlobal', data: { name: 'setInterval' } }],
+		},
+		{
+			code: `
+const fn = () => {
+	process.exit(0);
+	global.something = true;
+};`,
+			errors: [
+				{ messageId: 'restrictedGlobal', data: { name: 'process' } },
+				{ messageId: 'restrictedGlobal', data: { name: 'global' } },
+			],
+		},
+		{
+			name: 'SECURITY: __dirname usage',
+			code: 'const currentDir = __dirname;',
+			errors: [{ messageId: 'restrictedGlobal', data: { name: '__dirname' } }],
+		},
+		{
+			name: 'SECURITY: __filename usage',
+			code: 'console.log(__filename);',
+			errors: [{ messageId: 'restrictedGlobal', data: { name: '__filename' } }],
+		},
+		{
+			name: 'SECURITY: globalThis usage',
+			code: 'globalThis.myVar = "test";',
+			errors: [{ messageId: 'restrictedGlobal', data: { name: 'globalThis' } }],
+		},
+		{
+			name: 'SECURITY: setImmediate usage',
+			code: 'setImmediate(() => {});',
+			errors: [{ messageId: 'restrictedGlobal', data: { name: 'setImmediate' } }],
+		},
+		{
+			name: 'SECURITY: clearImmediate usage',
+			code: 'clearImmediate(immediate);',
+			errors: [{ messageId: 'restrictedGlobal', data: { name: 'clearImmediate' } }],
+		},
+	],
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/no-restricted-globals.ts

@@ -0,0 +1,74 @@
+import { TSESTree } from '@typescript-eslint/types';
+import type { TSESLint } from '@typescript-eslint/utils';
+
+import { createRule } from '../utils/index.js';
+
+const restrictedGlobals = [
+	'clearInterval',
+	'clearTimeout',
+	'global',
+	'globalThis',
+	'process',
+	'setInterval',
+	'setTimeout',
+	'setImmediate',
+	'clearImmediate',
+	'__dirname',
+	'__filename',
+];
+
+export const NoRestrictedGlobalsRule = createRule({
+	name: 'no-restricted-globals',
+	meta: {
+		type: 'problem',
+		docs: {
+			description: 'Disallow usage of restricted global variables in community nodes.',
+		},
+		messages: {
+			restrictedGlobal: "Use of restricted global '{{ name }}' is not allowed",
+		},
+		schema: [],
+	},
+	defaultOptions: [],
+	create(context) {
+		function checkReference(ref: TSESLint.Scope.Reference, name: string) {
+			const { parent } = ref.identifier;
+
+			// Skip property access (like console.process - we want process.exit but not obj.process)
+			if (
+				parent?.type === TSESTree.AST_NODE_TYPES.MemberExpression &&
+				parent.property === ref.identifier &&
+				!parent.computed
+			) {
+				return;
+			}
+
+			context.report({
+				node: ref.identifier,
+				messageId: 'restrictedGlobal',
+				data: { name },
+			});
+		}
+
+		return {
+			Program() {
+				const globalScope = context.sourceCode.getScope(context.sourceCode.ast);
+
+				const allReferences = [
+					...globalScope.variables
+						.filter(
+							(variable) => restrictedGlobals.includes(variable.name) && variable.defs.length === 0, // No definitions means it's a global
+						)
+						.flatMap((variable) =>
+							variable.references.map((ref) => ({ ref, name: variable.name })),
+						),
+					...globalScope.through
+						.filter((ref) => restrictedGlobals.includes(ref.identifier.name))
+						.map((ref) => ({ ref, name: ref.identifier.name })),
+				];
+
+				allReferences.forEach(({ ref, name }) => checkReference(ref, name));
+			},
+		};
+	},
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/no-restricted-imports.test.ts

@@ -0,0 +1,183 @@
+import { RuleTester } from '@typescript-eslint/rule-tester';
+
+import { NoRestrictedImportsRule } from './no-restricted-imports.js';
+
+const ruleTester = new RuleTester();
+
+ruleTester.run('no-restricted-imports', NoRestrictedImportsRule, {
+	valid: [
+		{
+			code: 'import { WorkflowExecuteMode } from "n8n-workflow";',
+		},
+		{
+			code: 'import _ from "lodash";',
+		},
+		{
+			code: 'import moment from "moment";',
+		},
+		{
+			code: 'import pLimit from "p-limit";',
+		},
+		{
+			code: 'import { DateTime } from "luxon";',
+		},
+		{
+			code: 'import { z } from "zod";',
+		},
+		{
+			code: 'import crypto from "crypto";',
+		},
+		{
+			code: 'import crypto from "node:crypto";',
+		},
+		{
+			code: 'import { helper } from "./helper";',
+		},
+		{
+			code: 'import { utils } from "../utils";',
+		},
+		{
+			code: 'const helper = require("./helper");',
+		},
+		{
+			code: 'const utils = require("../utils");',
+		},
+		{
+			code: 'const _ = require("lodash");',
+		},
+		{
+			code: 'require.resolve("lodash");',
+		},
+		{
+			code: 'require.resolve("./helper");',
+		},
+		{
+			code: 'require.resolve("../utils");',
+		},
+		{
+			code: 'const workflow = await import("n8n-workflow");',
+		},
+		{
+			code: 'import("lodash").then((_) => {});',
+		},
+		{
+			code: 'const helper = await import("./helper");',
+		},
+		{
+			code: 'import("../utils").then((utils) => {});',
+		},
+		{
+			code: 'import(`lodash`).then((_) => {});',
+		},
+		{
+			code: 'require(`./helper`);',
+		},
+		{
+			code: 'require.resolve(`n8n-workflow`);',
+		},
+		{
+			code: 'const workflow = await import(`n8n-workflow`);',
+		},
+	],
+	invalid: [
+		{
+			code: 'import fs from "fs";',
+			errors: [{ messageId: 'restrictedImport', data: { modulePath: 'fs' } }],
+		},
+		{
+			code: 'import path from "path";',
+			errors: [{ messageId: 'restrictedImport', data: { modulePath: 'path' } }],
+		},
+		{
+			code: 'import express from "express";',
+			errors: [{ messageId: 'restrictedImport', data: { modulePath: 'express' } }],
+		},
+		{
+			code: 'import axios from "axios";',
+			errors: [{ messageId: 'restrictedImport', data: { modulePath: 'axios' } }],
+		},
+		{
+			code: 'import { Client } from "@elastic/elasticsearch";',
+			errors: [{ messageId: 'restrictedImport', data: { modulePath: '@elastic/elasticsearch' } }],
+		},
+		{
+			code: 'const fs = require("fs");',
+			errors: [{ messageId: 'restrictedRequire', data: { modulePath: 'fs' } }],
+		},
+		{
+			code: 'const path = require("path");',
+			errors: [{ messageId: 'restrictedRequire', data: { modulePath: 'path' } }],
+		},
+		{
+			code: 'const express = require("express");',
+			errors: [{ messageId: 'restrictedRequire', data: { modulePath: 'express' } }],
+		},
+		{
+			code: 'require.resolve("fs");',
+			errors: [{ messageId: 'restrictedRequire', data: { modulePath: 'fs' } }],
+		},
+		{
+			code: 'require.resolve("express");',
+			errors: [{ messageId: 'restrictedRequire', data: { modulePath: 'express' } }],
+		},
+		{
+			code: 'const resolved = require.resolve("axios");',
+			errors: [{ messageId: 'restrictedRequire', data: { modulePath: 'axios' } }],
+		},
+		{
+			code: `
+import fs from "fs";
+import path from "path";
+import { WorkflowExecuteMode } from "n8n-workflow";
+import { supplyModel } from "@n8n/ai-node-sdk";`,
+			errors: [
+				{ messageId: 'restrictedImport', data: { modulePath: 'fs' } },
+				{ messageId: 'restrictedImport', data: { modulePath: 'path' } },
+			],
+		},
+		{
+			code: `
+const fs = require("fs");
+const express = require("express");
+const lodash = require("lodash");`,
+			errors: [
+				{ messageId: 'restrictedRequire', data: { modulePath: 'fs' } },
+				{ messageId: 'restrictedRequire', data: { modulePath: 'express' } },
+			],
+		},
+		{
+			code: 'const fs = await import("fs");',
+			errors: [{ messageId: 'restrictedDynamicImport', data: { modulePath: 'fs' } }],
+		},
+		{
+			code: 'import("path").then((path) => {});',
+			errors: [{ messageId: 'restrictedDynamicImport', data: { modulePath: 'path' } }],
+		},
+		{
+			code: 'const express = await import("express");',
+			errors: [{ messageId: 'restrictedDynamicImport', data: { modulePath: 'express' } }],
+		},
+		{
+			code: 'const path = require(`path`);',
+			errors: [{ messageId: 'restrictedRequire', data: { modulePath: 'path' } }],
+		},
+		{
+			code: 'require.resolve(`express`);',
+			errors: [{ messageId: 'restrictedRequire', data: { modulePath: 'express' } }],
+		},
+		{
+			code: 'const axios = await import(`axios`);',
+			errors: [{ messageId: 'restrictedDynamicImport', data: { modulePath: 'axios' } }],
+		},
+		{
+			code: `
+const fs = await import("fs");
+import("axios").then((axios) => {});
+const workflow = await import("n8n-workflow");`,
+			errors: [
+				{ messageId: 'restrictedDynamicImport', data: { modulePath: 'fs' } },
+				{ messageId: 'restrictedDynamicImport', data: { modulePath: 'axios' } },
+			],
+		},
+	],
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/no-restricted-imports.ts

@@ -0,0 +1,93 @@
+import {
+	getModulePath,
+	isDirectRequireCall,
+	isRequireMemberCall,
+	createRule,
+} from '../utils/index.js';
+
+const allowedModules = [
+	'n8n-workflow',
+	'ai-node-sdk',
+	'lodash',
+	'moment',
+	'p-limit',
+	'luxon',
+	'zod',
+	'crypto',
+	'node:crypto',
+	'@n8n/ai-node-sdk',
+];
+
+const isModuleAllowed = (modulePath: string): boolean => {
+	if (modulePath.startsWith('./') || modulePath.startsWith('../')) return true;
+
+	const moduleName = modulePath.startsWith('@')
+		? modulePath.split('/').slice(0, 2).join('/')
+		: modulePath.split('/')[0];
+	if (!moduleName) return true;
+	return allowedModules.includes(moduleName);
+};
+
+export const NoRestrictedImportsRule = createRule({
+	name: 'no-restricted-imports',
+	meta: {
+		type: 'problem',
+		docs: {
+			description: 'Disallow usage of restricted imports in community nodes.',
+		},
+		messages: {
+			restrictedImport:
+				"Import of '{{ modulePath }}' is not allowed. n8n Cloud does not allow community nodes with dependencies.",
+			restrictedRequire:
+				"Require of '{{ modulePath }}' is not allowed. n8n Cloud does not allow community nodes with dependencies.",
+			restrictedDynamicImport:
+				"Dynamic import of '{{ modulePath }}' is not allowed. n8n Cloud does not allow community nodes with dependencies.",
+		},
+		schema: [],
+	},
+	defaultOptions: [],
+	create(context) {
+		return {
+			ImportDeclaration(node) {
+				const modulePath = getModulePath(node.source);
+				if (modulePath && !isModuleAllowed(modulePath)) {
+					context.report({
+						node,
+						messageId: 'restrictedImport',
+						data: {
+							modulePath,
+						},
+					});
+				}
+			},
+
+			ImportExpression(node) {
+				const modulePath = getModulePath(node.source);
+				if (modulePath && !isModuleAllowed(modulePath)) {
+					context.report({
+						node,
+						messageId: 'restrictedDynamicImport',
+						data: {
+							modulePath,
+						},
+					});
+				}
+			},
+
+			CallExpression(node) {
+				if (isDirectRequireCall(node) || isRequireMemberCall(node)) {
+					const modulePath = getModulePath(node.arguments[0] ?? null);
+					if (modulePath && !isModuleAllowed(modulePath)) {
+						context.report({
+							node,
+							messageId: 'restrictedRequire',
+							data: {
+								modulePath,
+							},
+						});
+					}
+				}
+			},
+		};
+	},
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/node-usable-as-tool.test.ts

@@ -0,0 +1,147 @@
+import { RuleTester } from '@typescript-eslint/rule-tester';
+
+import { NodeUsableAsToolRule } from './node-usable-as-tool.js';
+
+const ruleTester = new RuleTester();
+
+function createNodeCode(
+	usableAsTool?: boolean | 'missing',
+	hasDescription: boolean = true,
+): string {
+	let usableAsToolProperty = '';
+	if (usableAsTool === true) {
+		usableAsToolProperty = ',\n\t\tusableAsTool: true';
+	} else if (usableAsTool === false) {
+		usableAsToolProperty = ',\n\t\tusableAsTool: false';
+	}
+
+	if (!hasDescription) {
+		return `
+import type { INodeType, INodeTypeDescription } from 'n8n-workflow';
+
+export class TestNode implements INodeType {
+	displayName = 'Test Node';
+}`;
+	}
+
+	return `
+import type { INodeType, INodeTypeDescription } from 'n8n-workflow';
+
+export class TestNode implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Test Node',
+		name: 'testNode',
+		group: ['input'],
+		version: 1,
+		description: 'A test node',
+		defaults: {
+			name: 'Test Node',
+		},
+		inputs: ['main'],
+		outputs: ['main'],
+		properties: []${usableAsToolProperty},
+	};
+}`;
+}
+
+function createNonNodeClass(): string {
+	return `
+export class RegularClass {
+	someProperty = 'value';
+}`;
+}
+
+function createNodeCodeWithOutputsInputs(
+	outputs: string,
+	inputs: string,
+	includeUsableAsTool = false,
+): string {
+	const usableAsToolLine = includeUsableAsTool ? '\n\t\tusableAsTool: true,' : '';
+	return `
+import type { INodeType, INodeTypeDescription } from 'n8n-workflow';
+import { NodeConnectionTypes } from 'n8n-workflow';
+
+export class TestNode implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Test Node',
+		name: 'testNode',
+		group: ['input'],
+		version: 1,
+		description: 'A test node',
+		defaults: {
+			name: 'Test Node',
+		},
+		inputs: ${inputs},
+		outputs: ${outputs},
+		properties: [],${usableAsToolLine}
+	};
+}`;
+}
+
+ruleTester.run('node-usable-as-tool', NodeUsableAsToolRule, {
+	valid: [
+		{
+			name: 'node with usableAsTool set to true',
+			code: createNodeCode(true),
+		},
+		{
+			name: 'class that does not implement INodeType',
+			code: createNonNodeClass(),
+		},
+		{
+			name: 'node with usableAsTool set to false',
+			code: createNodeCode(false),
+		},
+		{
+			name: 'node without description property',
+			code: createNodeCode(undefined, false),
+		},
+		{
+			name: 'AI-only node: NodeConnectionTypes non-Main output and empty inputs skips usableAsTool check',
+			code: createNodeCodeWithOutputsInputs('[NodeConnectionTypes.AiAgent]', '[]'),
+		},
+		{
+			name: 'AI-only node: multiple non-Main NodeConnectionTypes outputs and empty inputs skips usableAsTool check',
+			code: createNodeCodeWithOutputsInputs(
+				'[NodeConnectionTypes.AiAgent, NodeConnectionTypes.AiTool]',
+				'[]',
+			),
+		},
+		{
+			name: 'AI-only node: non-main string literal output and empty inputs skips usableAsTool check',
+			code: createNodeCodeWithOutputsInputs("['ai_agent']", '[]'),
+		},
+	],
+	invalid: [
+		{
+			name: 'node missing usableAsTool property',
+			code: createNodeCode('missing'),
+			errors: [{ messageId: 'missingUsableAsTool' }],
+			output: createNodeCode(true),
+		},
+		{
+			name: 'NodeConnectionTypes.Main output with empty inputs does not skip check',
+			code: createNodeCodeWithOutputsInputs('[NodeConnectionTypes.Main]', '[]'),
+			errors: [{ messageId: 'missingUsableAsTool' }],
+			output: createNodeCodeWithOutputsInputs('[NodeConnectionTypes.Main]', '[]', true),
+		},
+		{
+			name: 'main string literal output with empty inputs does not skip check',
+			code: createNodeCodeWithOutputsInputs("['main']", '[]'),
+			errors: [{ messageId: 'missingUsableAsTool' }],
+			output: createNodeCodeWithOutputsInputs("['main']", '[]', true),
+		},
+		{
+			name: 'non-Main output with non-empty inputs does not skip check',
+			code: createNodeCodeWithOutputsInputs('[NodeConnectionTypes.AiAgent]', "['main']"),
+			errors: [{ messageId: 'missingUsableAsTool' }],
+			output: createNodeCodeWithOutputsInputs('[NodeConnectionTypes.AiAgent]', "['main']", true),
+		},
+		{
+			name: 'non-main string literal output with non-empty inputs does not skip check',
+			code: createNodeCodeWithOutputsInputs("['ai_agent']", "['main']"),
+			errors: [{ messageId: 'missingUsableAsTool' }],
+			output: createNodeCodeWithOutputsInputs("['ai_agent']", "['main']", true),
+		},
+	],
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/node-usable-as-tool.ts

@@ -0,0 +1,94 @@
+import { TSESTree } from '@typescript-eslint/types';
+
+import {
+	isNodeTypeClass,
+	findClassProperty,
+	findObjectProperty,
+	createRule,
+} from '../utils/index.js';
+
+export const NodeUsableAsToolRule = createRule({
+	name: 'node-usable-as-tool',
+	meta: {
+		type: 'problem',
+		docs: {
+			description: 'Ensure node classes have usableAsTool property',
+		},
+		messages: {
+			missingUsableAsTool:
+				'Node class should have usableAsTool property. When in doubt, set it to true.',
+		},
+		fixable: 'code',
+		schema: [],
+	},
+	defaultOptions: [],
+	create(context) {
+		return {
+			ClassDeclaration(node) {
+				if (!isNodeTypeClass(node)) {
+					return;
+				}
+
+				const descriptionProperty = findClassProperty(node, 'description');
+				if (!descriptionProperty) {
+					return;
+				}
+
+				const descriptionValue = descriptionProperty.value;
+				if (descriptionValue?.type !== TSESTree.AST_NODE_TYPES.ObjectExpression) {
+					return;
+				}
+
+				const usableAsToolProperty = findObjectProperty(descriptionValue, 'usableAsTool');
+				const outputsProperty = findObjectProperty(descriptionValue, 'outputs');
+				const inputsProperty = findObjectProperty(descriptionValue, 'inputs');
+				if (
+					outputsProperty?.value?.type === TSESTree.AST_NODE_TYPES.ArrayExpression &&
+					inputsProperty?.value?.type === TSESTree.AST_NODE_TYPES.ArrayExpression
+				) {
+					const isAiOutput = outputsProperty?.value?.elements?.some((element) => {
+						const isAiOutputEnum =
+							element?.type === TSESTree.AST_NODE_TYPES.MemberExpression &&
+							element?.object?.type === TSESTree.AST_NODE_TYPES.Identifier &&
+							element?.object?.name === 'NodeConnectionTypes' &&
+							element?.property?.type === TSESTree.AST_NODE_TYPES.Identifier &&
+							element?.property?.name !== 'Main';
+						const isAiOutputLiteral =
+							element?.type === TSESTree.AST_NODE_TYPES.Literal && element?.value !== 'main';
+						return isAiOutputEnum || isAiOutputLiteral;
+					});
+					const isEmptyInputs = inputsProperty?.value?.elements?.length === 0;
+					if (isAiOutput && isEmptyInputs) {
+						return;
+					}
+				}
+
+				if (!usableAsToolProperty) {
+					context.report({
+						node,
+						messageId: 'missingUsableAsTool',
+						fix(fixer) {
+							if (descriptionValue?.type === TSESTree.AST_NODE_TYPES.ObjectExpression) {
+								const properties = descriptionValue.properties;
+								if (properties.length === 0) {
+									const openBrace = descriptionValue.range[0] + 1;
+									return fixer.insertTextAfterRange(
+										[openBrace, openBrace],
+										'\n\t\tusableAsTool: true,',
+									);
+								} else {
+									const lastProperty = properties.at(-1);
+									if (lastProperty) {
+										return fixer.insertTextAfter(lastProperty, ',\n\t\tusableAsTool: true');
+									}
+								}
+							}
+
+							return null;
+						},
+					});
+				}
+			},
+		};
+	},
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/package-name-convention.test.ts

@@ -0,0 +1,189 @@
+import { RuleTester } from '@typescript-eslint/rule-tester';
+
+import { PackageNameConventionRule } from './package-name-convention.js';
+
+const ruleTester = new RuleTester();
+
+ruleTester.run('package-name-convention', PackageNameConventionRule, {
+	valid: [
+		{
+			name: 'valid unscoped package name',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-example", "version": "1.0.0" }',
+		},
+		{
+			name: 'valid unscoped package name with dashes',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-my-service", "version": "1.0.0" }',
+		},
+		{
+			name: 'valid scoped package name',
+			filename: 'package.json',
+			code: '{ "name": "@mycompany/n8n-nodes-example", "version": "1.0.0" }',
+		},
+		{
+			name: 'valid scoped package name with dashes',
+			filename: 'package.json',
+			code: '{ "name": "@author/n8n-nodes-service", "version": "1.0.0" }',
+		},
+		{
+			name: 'object without name property',
+			filename: 'package.json',
+			code: '{ "version": "1.0.0", "description": "test" }',
+		},
+		{
+			name: 'non-package.json file ignored',
+			filename: 'some-config.json',
+			code: '{ "name": "my-config", "type": "config" }',
+		},
+		{
+			name: 'nested name fields should be ignored - only top-level name matters',
+			filename: 'package.json',
+			code: `{
+				"name": "n8n-nodes-example",
+				"version": "1.0.0",
+				"dependencies": {
+					"name": "invalid-nested-name"
+				},
+				"scripts": {
+					"name": "another-invalid-name"
+				},
+				"author": {
+					"name": "John Doe"
+				}
+			}`,
+		},
+		{
+			name: 'deeply nested name fields should be ignored',
+			filename: 'package.json',
+			code: `{
+				"name": "@author/n8n-nodes-service",
+				"version": "1.0.0",
+				"config": {
+					"nested": {
+						"deeply": {
+							"name": "very-invalid-name"
+						}
+					}
+				},
+				"repository": {
+					"type": "git",
+					"url": "https://github.com/user/repo",
+					"directory": {
+						"name": "bad-name"
+					}
+				}
+			}`,
+		},
+	],
+	invalid: [
+		{
+			name: 'invalid package name - generic',
+			filename: 'package.json',
+			code: '{ "name": "my-package", "version": "1.0.0" }',
+			errors: [
+				{
+					messageId: 'invalidPackageName',
+					data: { packageName: 'my-package' },
+					suggestions: [
+						{
+							messageId: 'renameTo',
+							data: { suggestedName: 'n8n-nodes-my-package' },
+							output: '{ "name": "n8n-nodes-my-package", "version": "1.0.0" }',
+						},
+					],
+				},
+			],
+		},
+		{
+			name: 'invalid package name - missing nodes',
+			filename: 'package.json',
+			code: '{ "name": "n8n-example", "version": "1.0.0" }',
+			errors: [
+				{
+					messageId: 'invalidPackageName',
+					data: { packageName: 'n8n-example' },
+					suggestions: [
+						{
+							messageId: 'renameTo',
+							data: { suggestedName: 'n8n-nodes-example' },
+							output: '{ "name": "n8n-nodes-example", "version": "1.0.0" }',
+						},
+					],
+				},
+			],
+		},
+		{
+			name: 'invalid scoped package name',
+			filename: 'package.json',
+			code: '{ "name": "@company/example-nodes", "version": "1.0.0" }',
+			errors: [
+				{
+					messageId: 'invalidPackageName',
+					data: { packageName: '@company/example-nodes' },
+					suggestions: [
+						{
+							messageId: 'renameTo',
+							data: { suggestedName: '@company/n8n-nodes-example' },
+							output: '{ "name": "@company/n8n-nodes-example", "version": "1.0.0" }',
+						},
+					],
+				},
+			],
+		},
+		{
+			name: 'invalid package name - wrong order',
+			filename: 'package.json',
+			code: '{ "name": "nodes-n8n-example", "version": "1.0.0" }',
+			errors: [
+				{
+					messageId: 'invalidPackageName',
+					data: { packageName: 'nodes-n8n-example' },
+					suggestions: [
+						{
+							messageId: 'renameTo',
+							data: { suggestedName: 'n8n-nodes-example' },
+							output: '{ "name": "n8n-nodes-example", "version": "1.0.0" }',
+						},
+					],
+				},
+			],
+		},
+		{
+			name: 'empty package name',
+			filename: 'package.json',
+			code: '{ "name": "", "version": "1.0.0" }',
+			errors: [
+				{
+					messageId: 'invalidPackageName',
+					data: { packageName: '' },
+					suggestions: [],
+				},
+			],
+		},
+		{
+			name: 'incomplete package name with missing suffix',
+			filename: 'package.json',
+			code: '{ "name": "n8n-nodes-", "version": "1.0.0" }',
+			errors: [
+				{
+					messageId: 'invalidPackageName',
+					data: { packageName: 'n8n-nodes-' },
+					suggestions: [],
+				},
+			],
+		},
+		{
+			name: 'incomplete scoped package name with missing suffix',
+			filename: 'package.json',
+			code: '{ "name": "@company/n8n-nodes-", "version": "1.0.0" }',
+			errors: [
+				{
+					messageId: 'invalidPackageName',
+					data: { packageName: '@company/n8n-nodes-' },
+					suggestions: [],
+				},
+			],
+		},
+	],
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/package-name-convention.ts

@@ -0,0 +1,102 @@
+import type { TSESTree } from '@typescript-eslint/utils';
+import { AST_NODE_TYPES } from '@typescript-eslint/utils';
+import type { ReportSuggestionArray } from '@typescript-eslint/utils/ts-eslint';
+
+import { createRule, findJsonProperty } from '../utils/index.js';
+
+export const PackageNameConventionRule = createRule({
+	name: 'package-name-convention',
+	meta: {
+		type: 'problem',
+		docs: {
+			description: 'Enforce correct package naming convention for n8n community nodes',
+		},
+		messages: {
+			renameTo: "Rename to '{{suggestedName}}'",
+			invalidPackageName:
+				'Package name "{{ packageName }}" must follow the convention "n8n-nodes-[PACKAGE-NAME]" or "@[AUTHOR]/n8n-nodes-[PACKAGE-NAME]"',
+		},
+		schema: [],
+		hasSuggestions: true,
+	},
+	defaultOptions: [],
+	create(context) {
+		if (!context.filename.endsWith('package.json')) {
+			return {};
+		}
+
+		return {
+			ObjectExpression(node: TSESTree.ObjectExpression) {
+				if (node.parent?.type === AST_NODE_TYPES.Property) {
+					return;
+				}
+
+				const nameProperty = findJsonProperty(node, 'name');
+
+				if (!nameProperty) {
+					return;
+				}
+
+				if (nameProperty.value.type !== AST_NODE_TYPES.Literal) {
+					return;
+				}
+
+				const packageName = nameProperty.value.value;
+				const packageNameStr = typeof packageName === 'string' ? packageName : null;
+
+				if (!packageNameStr || !isValidPackageName(packageNameStr)) {
+					const suggestions: ReportSuggestionArray<'invalidPackageName' | 'renameTo'> = [];
+
+					// Generate package name suggestions if we have a valid string
+					if (packageNameStr) {
+						const suggestedNames = generatePackageNameSuggestions(packageNameStr);
+						for (const suggestedName of suggestedNames) {
+							suggestions.push({
+								messageId: 'renameTo',
+								data: { suggestedName },
+								fix(fixer) {
+									return fixer.replaceText(nameProperty.value, `"${suggestedName}"`);
+								},
+							});
+						}
+					}
+
+					context.report({
+						node: nameProperty,
+						messageId: 'invalidPackageName',
+						data: {
+							packageName: packageNameStr ?? 'undefined',
+						},
+						suggest: suggestions,
+					});
+				}
+			},
+		};
+	},
+});
+
+function isValidPackageName(name: string): boolean {
+	const unscoped = /^n8n-nodes-.+$/;
+	const scoped = /^@.+\/n8n-nodes-.+$/;
+	return unscoped.test(name) || scoped.test(name);
+}
+
+function generatePackageNameSuggestions(invalidName: string): string[] {
+	const cleanName = (name: string) => {
+		return name
+			.replace(/^nodes?-?n8n-?/, '')
+			.replace(/^n8n-/, '')
+			.replace(/^nodes?-?/, '')
+			.replace(/^node-/, '')
+			.replace(/-nodes$/, '');
+	};
+
+	if (invalidName.startsWith('@')) {
+		const [scope, packagePart] = invalidName.split('/');
+		const clean = cleanName(packagePart ?? '');
+		return clean ? [`${scope}/n8n-nodes-${clean}`] : [];
+	}
+
+	const clean = cleanName(invalidName);
+	return clean ? [`n8n-nodes-${clean}`] : [];
+}

packages/@n8n/eslint-plugin-community-nodes/src/rules/resource-operation-pattern.test.ts

@@ -0,0 +1,217 @@
+import { RuleTester } from '@typescript-eslint/rule-tester';
+
+import { ResourceOperationPatternRule } from './resource-operation-pattern.js';
+
+const ruleTester = new RuleTester();
+
+ruleTester.run('resource-operation-pattern', ResourceOperationPatternRule, {
+	valid: [
+		{
+			name: 'node with resources and operations (good pattern)',
+			filename: '/tmp/TestNode.node.ts',
+			code: `
+				import type { INodeType, INodeTypeDescription } from 'n8n-workflow';
+
+				export class TestNode implements INodeType {
+					description: INodeTypeDescription = {
+						displayName: 'Test Node',
+						name: 'testNode',
+						group: ['output'],
+						version: 1,
+						inputs: ['main'],
+						outputs: ['main'],
+						properties: [
+							{
+								displayName: 'Resource',
+								name: 'resource',
+								type: 'options',
+								options: [
+									{ name: 'User', value: 'user' },
+									{ name: 'Project', value: 'project' }
+								],
+								default: 'user'
+							},
+							{
+								displayName: 'Operation',
+								name: 'operation',
+								type: 'options',
+								options: [
+									{ name: 'Get', value: 'get' },
+									{ name: 'Create', value: 'create' },
+									{ name: 'Update', value: 'update' },
+									{ name: 'Delete', value: 'delete' }
+								],
+								default: 'get'
+							}
+						]
+					};
+				}
+			`,
+		},
+		{
+			name: 'node without operations property',
+			filename: '/tmp/TestNode.node.ts',
+			code: `
+				import type { INodeType, INodeTypeDescription } from 'n8n-workflow';
+
+				export class TestNode implements INodeType {
+					description: INodeTypeDescription = {
+						displayName: 'Test Node',
+						name: 'testNode',
+						group: ['output'],
+						version: 1,
+						inputs: ['main'],
+						outputs: ['main'],
+						properties: [
+							{
+								displayName: 'API Key',
+								name: 'apiKey',
+								type: 'string',
+								default: ''
+							}
+						]
+					};
+				}
+			`,
+		},
+		{
+			name: 'non-node class ignored',
+			filename: '/tmp/TestNode.node.ts',
+			code: `
+				export class NotANode {
+					description = {
+						properties: [
+							{
+								displayName: 'Operation',
+								name: 'operation',
+								type: 'options',
+								options: [
+									{ name: 'Get', value: 'get' },
+									{ name: 'Create', value: 'create' }
+								],
+								default: 'get'
+							}
+						]
+					};
+				}
+			`,
+		},
+		{
+			name: 'node with exactly 5 operations without resources (allowed)',
+			filename: '/tmp/TestNode.node.ts',
+			code: `
+				import type { INodeType, INodeTypeDescription } from 'n8n-workflow';
+
+				export class TestNode implements INodeType {
+					description: INodeTypeDescription = {
+						displayName: 'Test Node',
+						name: 'testNode',
+						group: ['output'],
+						version: 1,
+						inputs: ['main'],
+						outputs: ['main'],
+						properties: [
+							{
+								displayName: 'Operation',
+								name: 'operation',
+								type: 'options',
+								options: [
+									{ name: 'Get', value: 'get' },
+									{ name: 'Create', value: 'create' },
+									{ name: 'Update', value: 'update' },
+									{ name: 'Delete', value: 'delete' },
+									{ name: 'List', value: 'list' }
+								],
+								default: 'get'
+							}
+						]
+					};
+				}
+			`,
+		},
+	],
+	invalid: [
+		{
+			name: 'node with exactly 6 operations without resources (error)',
+			filename: '/tmp/TestNode.node.ts',
+			code: `
+				import type { INodeType, INodeTypeDescription } from 'n8n-workflow';
+
+				export class TestNode implements INodeType {
+					description: INodeTypeDescription = {
+						displayName: 'Test Node',
+						name: 'testNode',
+						group: ['output'],
+						version: 1,
+						inputs: ['main'],
+						outputs: ['main'],
+						properties: [
+							{
+								displayName: 'Operation',
+								name: 'operation',
+								type: 'options',
+								options: [
+									{ name: 'Get', value: 'get' },
+									{ name: 'Create', value: 'create' },
+									{ name: 'Update', value: 'update' },
+									{ name: 'Delete', value: 'delete' },
+									{ name: 'List', value: 'list' },
+									{ name: 'Search', value: 'search' }
+								],
+								default: 'get'
+							}
+						]
+					};
+				}
+			`,
+			errors: [
+				{
+					messageId: 'tooManyOperationsWithoutResources',
+					data: { operationCount: '6' },
+				},
+			],
+		},
+		{
+			name: 'node with many operations without resources (error)',
+			filename: '/tmp/TestNode.node.ts',
+			code: `
+				import type { INodeType, INodeTypeDescription } from 'n8n-workflow';
+
+				export class TestNode implements INodeType {
+					description: INodeTypeDescription = {
+						displayName: 'Test Node',
+						name: 'testNode',
+						group: ['output'],
+						version: 1,
+						inputs: ['main'],
+						outputs: ['main'],
+						properties: [
+							{
+								displayName: 'Operation',
+								name: 'operation',
+								type: 'options',
+								options: [
+									{ name: 'Get User', value: 'getUser' },
+									{ name: 'Create User', value: 'createUser' },
+									{ name: 'Update User', value: 'updateUser' },
+									{ name: 'Delete User', value: 'deleteUser' },
+									{ name: 'List Users', value: 'listUsers' },
+									{ name: 'Get Project', value: 'getProject' },
+									{ name: 'Create Project', value: 'createProject' },
+									{ name: 'Update Project', value: 'updateProject' }
+								],
+								default: 'getUser'
+							}
+						]
+					};
+				}
+			`,
+			errors: [
+				{
+					messageId: 'tooManyOperationsWithoutResources',
+					data: { operationCount: '8' },
+				},
+			],
+		},
+	],
+});

packages/@n8n/eslint-plugin-community-nodes/src/rules/resource-operation-pattern.ts

@@ -0,0 +1,104 @@
+import type { TSESTree } from '@typescript-eslint/utils';
+import { AST_NODE_TYPES } from '@typescript-eslint/utils';
+
+import {
+	isNodeTypeClass,
+	findClassProperty,
+	findObjectProperty,
+	getStringLiteralValue,
+	isFileType,
+	createRule,
+} from '../utils/index.js';
+
+export const ResourceOperationPatternRule = createRule({
+	name: 'resource-operation-pattern',
+	meta: {
+		type: 'problem',
+		docs: {
+			description: 'Enforce proper resource/operation pattern for better UX in n8n nodes',
+		},
+		messages: {
+			tooManyOperationsWithoutResources:
+				'Node has {{ operationCount }} operations without resources. Use resources to organize operations when there are more than 5 operations.',
+		},
+		schema: [],
+	},
+	defaultOptions: [],
+	create(context) {
+		if (!isFileType(context.filename, '.node.ts')) {
+			return {};
+		}
+
+		const analyzeNodeDescription = (descriptionValue: TSESTree.Expression | null): void => {
+			if (!descriptionValue || descriptionValue.type !== AST_NODE_TYPES.ObjectExpression) {
+				return;
+			}
+
+			const propertiesProperty = findObjectProperty(descriptionValue, 'properties');
+			if (
+				!propertiesProperty?.value ||
+				propertiesProperty.value.type !== AST_NODE_TYPES.ArrayExpression
+			) {
+				return;
+			}
+
+			const propertiesArray = propertiesProperty.value;
+			let hasResources = false;
+			let operationCount = 0;
+			let operationNode: TSESTree.Node | null = null;
+
+			for (const property of propertiesArray.elements) {
+				if (!property || property.type !== AST_NODE_TYPES.ObjectExpression) {
+					continue;
+				}
+
+				const nameProperty = findObjectProperty(property, 'name');
+				const typeProperty = findObjectProperty(property, 'type');
+
+				const name = nameProperty ? getStringLiteralValue(nameProperty.value) : null;
+				const type = typeProperty ? getStringLiteralValue(typeProperty.value) : null;
+
+				if (!name || !type) {
+					continue;
+				}
+
+				if (name === 'resource' && type === 'options') {
+					hasResources = true;
+				}
+
+				if (name === 'operation' && type === 'options') {
+					operationNode = property;
+					const optionsProperty = findObjectProperty(property, 'options');
+					if (optionsProperty?.value?.type === AST_NODE_TYPES.ArrayExpression) {
+						operationCount = optionsProperty.value.elements.length;
+					}
+				}
+			}
+
+			if (operationCount > 5 && !hasResources && operationNode) {
+				context.report({
+					node: operationNode,
+					messageId: 'tooManyOperationsWithoutResources',
+					data: {
+						operationCount: operationCount.toString(),
+					},
+				});
+			}
+		};
+
+		return {
+			ClassDeclaration(node) {
+				if (!isNodeTypeClass(node)) {
+					return;
+				}
+
+				const descriptionProperty = findClassProperty(node, 'description');
+				if (!descriptionProperty) {
+					return;
+				}
+
+				analyzeNodeDescription(descriptionProperty.value);
+			},
+		};
+	},
+});

packages/@n8n/eslint-plugin-community-nodes/src/utils/ast-utils.ts

@@ -0,0 +1,220 @@
+import type { TSESTree } from '@typescript-eslint/utils';
+import { AST_NODE_TYPES } from '@typescript-eslint/utils';
+import { distance } from 'fastest-levenshtein';
+
+function implementsInterface(node: TSESTree.ClassDeclaration, interfaceName: string): boolean {
+	return (
+		node.implements?.some(
+			(impl) =>
+				impl.type === AST_NODE_TYPES.TSClassImplements &&
+				impl.expression.type === AST_NODE_TYPES.Identifier &&
+				impl.expression.name === interfaceName,
+		) ?? false
+	);
+}
+
+export function isNodeTypeClass(node: TSESTree.ClassDeclaration): boolean {
+	if (implementsInterface(node, 'INodeType')) {
+		return true;
+	}
+
+	if (node.superClass?.type === AST_NODE_TYPES.Identifier && node.superClass.name === 'Node') {
+		return true;
+	}
+
+	return false;
+}
+
+export function isCredentialTypeClass(node: TSESTree.ClassDeclaration): boolean {
+	return implementsInterface(node, 'ICredentialType');
+}
+
+export function findClassProperty(
+	node: TSESTree.ClassDeclaration,
+	propertyName: string,
+): TSESTree.PropertyDefinition | null {
+	const property = node.body.body.find(
+		(member) =>
+			member.type === AST_NODE_TYPES.PropertyDefinition &&
+			member.key?.type === AST_NODE_TYPES.Identifier &&
+			member.key.name === propertyName,
+	);
+	return property?.type === AST_NODE_TYPES.PropertyDefinition ? property : null;
+}
+
+export function findObjectProperty(
+	obj: TSESTree.ObjectExpression,
+	propertyName: string,
+): TSESTree.Property | null {
+	const property = obj.properties.find(
+		(prop) =>
+			prop.type === AST_NODE_TYPES.Property &&
+			prop.key.type === AST_NODE_TYPES.Identifier &&
+			prop.key.name === propertyName,
+	);
+	return property?.type === AST_NODE_TYPES.Property ? property : null;
+}
+
+export function getLiteralValue(node: TSESTree.Node | null): string | boolean | number | null {
+	if (node?.type === AST_NODE_TYPES.Literal) {
+		return node.value as string | boolean | number | null;
+	}
+	return null;
+}
+
+export function getStringLiteralValue(node: TSESTree.Node | null): string | null {
+	const value = getLiteralValue(node);
+	return typeof value === 'string' ? value : null;
+}
+
+export function getModulePath(node: TSESTree.Node | null): string | null {
+	const stringValue = getStringLiteralValue(node);
+	if (stringValue) {
+		return stringValue;
+	}
+
+	if (
+		node?.type === AST_NODE_TYPES.TemplateLiteral &&
+		node.expressions.length === 0 &&
+		node.quasis.length === 1
+	) {
+		return node.quasis[0]?.value.cooked ?? null;
+	}
+
+	return null;
+}
+
+export function getBooleanLiteralValue(node: TSESTree.Node | null): boolean | null {
+	const value = getLiteralValue(node);
+	return typeof value === 'boolean' ? value : null;
+}
+
+export function findJsonProperty(
+	obj: TSESTree.ObjectExpression,
+	propertyName: string,
+): TSESTree.Property | null {
+	const property = obj.properties.find(
+		(prop) =>
+			prop.type === AST_NODE_TYPES.Property &&
+			prop.key.type === AST_NODE_TYPES.Literal &&
+			prop.key.value === propertyName,
+	);
+	return property?.type === AST_NODE_TYPES.Property ? property : null;
+}
+
+export function findArrayLiteralProperty(
+	obj: TSESTree.ObjectExpression,
+	propertyName: string,
+): TSESTree.ArrayExpression | null {
+	const property = findObjectProperty(obj, propertyName);
+	if (property?.value.type === AST_NODE_TYPES.ArrayExpression) {
+		return property.value;
+	}
+	return null;
+}
+
+export function hasArrayLiteralValue(
+	node: TSESTree.PropertyDefinition,
+	searchValue: string,
+): boolean {
+	if (node.value?.type !== AST_NODE_TYPES.ArrayExpression) return false;
+
+	return node.value.elements.some(
+		(element) =>
+			element?.type === AST_NODE_TYPES.Literal &&
+			typeof element.value === 'string' &&
+			element.value === searchValue,
+	);
+}
+
+export function getTopLevelObjectInJson(
+	node: TSESTree.ObjectExpression,
+): TSESTree.ObjectExpression | null {
+	if (node.parent?.type === AST_NODE_TYPES.Property) {
+		return null;
+	}
+	return node;
+}
+
+export function isFileType(filename: string, extension: string): boolean {
+	return filename.endsWith(extension);
+}
+
+export function isDirectRequireCall(node: TSESTree.CallExpression): boolean {
+	return (
+		node.callee.type === AST_NODE_TYPES.Identifier &&
+		node.callee.name === 'require' &&
+		node.arguments.length > 0
+	);
+}
+
+export function isRequireMemberCall(node: TSESTree.CallExpression): boolean {
+	return (
+		node.callee.type === AST_NODE_TYPES.MemberExpression &&
+		node.callee.object.type === AST_NODE_TYPES.Identifier &&
+		node.callee.object.name === 'require' &&
+		node.arguments.length > 0
+	);
+}
+
+export function extractCredentialInfoFromArray(
+	element: TSESTree.ArrayExpression['elements'][number],
+): { name: string; testedBy?: string; node: TSESTree.Node } | null {
+	if (!element) return null;
+
+	const stringValue = getStringLiteralValue(element);
+	if (stringValue) {
+		return { name: stringValue, node: element };
+	}
+
+	if (element.type === AST_NODE_TYPES.ObjectExpression) {
+		const nameProperty = findObjectProperty(element, 'name');
+		const testedByProperty = findObjectProperty(element, 'testedBy');
+
+		if (nameProperty) {
+			const nameValue = getStringLiteralValue(nameProperty.value);
+			const testedByValue = testedByProperty
+				? getStringLiteralValue(testedByProperty.value)
+				: undefined;
+
+			if (nameValue) {
+				return {
+					name: nameValue,
+					testedBy: testedByValue ?? undefined,
+					node: nameProperty.value,
+				};
+			}
+		}
+	}
+
+	return null;
+}
+
+export function extractCredentialNameFromArray(
+	element: TSESTree.ArrayExpression['elements'][number],
+): { name: string; node: TSESTree.Node } | null {
+	const info = extractCredentialInfoFromArray(element);
+	return info ? { name: info.name, node: info.node } : null;
+}
+
+export function findSimilarStrings(
+	target: string,
+	candidates: Set<string>,
+	maxDistance: number = 3,
+	maxResults: number = 3,
+): string[] {
+	const matches: Array<{ name: string; distance: number }> = [];
+
+	for (const candidate of candidates) {
+		const levenshteinDistance = distance(target.toLowerCase(), candidate.toLowerCase());
+
+		if (levenshteinDistance <= maxDistance) {
+			matches.push({ name: candidate, distance: levenshteinDistance });
+		}
+	}
+
+	return matches
+		.sort((a, b) => a.distance - b.distance)
+		.slice(0, maxResults)
+		.map((match) => match.name);
+}

packages/@n8n/eslint-plugin-community-nodes/src/utils/file-utils.ts

@@ -0,0 +1,294 @@
+import type { TSESTree } from '@typescript-eslint/typescript-estree';
+import { parse, simpleTraverse, AST_NODE_TYPES } from '@typescript-eslint/typescript-estree';
+import { readFileSync, existsSync, readdirSync } from 'node:fs';
+import * as path from 'node:path';
+import { dirname, parse as parsePath } from 'node:path';
+
+import {
+	isCredentialTypeClass,
+	isNodeTypeClass,
+	findClassProperty,
+	getStringLiteralValue,
+	findArrayLiteralProperty,
+	extractCredentialInfoFromArray,
+	findSimilarStrings,
+} from './ast-utils.js';
+
+/**
+ * Checks if the given childPath is contained within the parentPath. Resolves
+ * the paths before comparing them, so that relative paths are also supported.
+ */
+export function isContainedWithin(parentPath: string, childPath: string): boolean {
+	parentPath = path.resolve(parentPath);
+	childPath = path.resolve(childPath);
+
+	if (parentPath === childPath) {
+		return true;
+	}
+
+	return childPath.startsWith(parentPath + path.sep);
+}
+
+/**
+ * Joins the given paths to the parentPath, ensuring that the resulting path
+ * is still contained within the parentPath. If not, it throws an error to
+ * prevent path traversal vulnerabilities.
+ *
+ * @throws {UnexpectedError} If the resulting path is not contained within the parentPath.
+ */
+export function safeJoinPath(parentPath: string, ...paths: string[]): string {
+	const candidate = path.join(parentPath, ...paths);
+
+	if (!isContainedWithin(parentPath, candidate)) {
+		throw new Error(
+			`Path traversal detected, refusing to join paths: ${parentPath} and ${JSON.stringify(paths)}`,
+		);
+	}
+
+	return candidate;
+}
+
+export function findPackageJson(startPath: string): string | null {
+	let currentDir = path.dirname(startPath);
+
+	while (parsePath(currentDir).dir !== parsePath(currentDir).root) {
+		const testPath = safeJoinPath(currentDir, 'package.json');
+		if (fileExistsWithCaseSync(testPath)) {
+			return testPath;
+		}
+
+		currentDir = dirname(currentDir);
+	}
+
+	return null;
+}
+
+interface PackageJsonN8n {
+	credentials?: string[];
+	nodes?: string[];
+	[key: string]: unknown;
+}
+
+function isValidPackageJson(obj: unknown): obj is { n8n?: PackageJsonN8n } {
+	return typeof obj === 'object' && obj !== null;
+}
+
+function readPackageJsonN8n(packageJsonPath: string): PackageJsonN8n {
+	try {
+		const content = readFileSync(packageJsonPath, 'utf8');
+		const parsed: unknown = JSON.parse(content);
+		if (isValidPackageJson(parsed)) {
+			return parsed.n8n ?? {};
+		}
+		return {};
+	} catch {
+		return {};
+	}
+}
+
+function resolveN8nFilePaths(packageJsonPath: string, filePaths: string[]): string[] {
+	const packageDir = dirname(packageJsonPath);
+	const resolvedFiles: string[] = [];
+
+	for (const filePath of filePaths) {
+		const sourcePath = filePath.replace(/^dist\//, '').replace(/\.js$/, '.ts');
+		const fullSourcePath = safeJoinPath(packageDir, sourcePath);
+
+		if (existsSync(fullSourcePath)) {
+			resolvedFiles.push(fullSourcePath);
+		}
+	}
+
+	return resolvedFiles;
+}
+
+export function readPackageJsonCredentials(packageJsonPath: string): Set<string> {
+	const n8nConfig = readPackageJsonN8n(packageJsonPath);
+	const credentialPaths = n8nConfig.credentials ?? [];
+	const credentialFiles = resolveN8nFilePaths(packageJsonPath, credentialPaths);
+	const credentialNames: string[] = [];
+
+	for (const credentialFile of credentialFiles) {
+		try {
+			const credentialName = extractCredentialNameFromFile(credentialFile);
+			if (credentialName) {
+				credentialNames.push(credentialName);
+			}
+		} catch {
+			// Silently continue if file can't be parsed
+		}
+	}
+
+	return new Set(credentialNames);
+}
+
+export function extractCredentialNameFromFile(credentialFilePath: string): string | null {
+	try {
+		const sourceCode = readFileSync(credentialFilePath, 'utf8');
+		const ast = parse(sourceCode, {
+			jsx: false,
+			range: true,
+		});
+
+		let credentialName: string | null = null;
+
+		simpleTraverse(ast, {
+			enter(node: TSESTree.Node) {
+				if (node.type === AST_NODE_TYPES.ClassDeclaration && isCredentialTypeClass(node)) {
+					const nameProperty = findClassProperty(node, 'name');
+					if (nameProperty) {
+						const nameValue = getStringLiteralValue(nameProperty.value);
+						if (nameValue) {
+							credentialName = nameValue;
+						}
+					}
+				}
+			},
+		});
+
+		return credentialName;
+	} catch {
+		return null;
+	}
+}
+
+export function validateIconPath(
+	iconPath: string,
+	baseDir: string,
+): {
+	isValid: boolean;
+	isFile: boolean;
+	isSvg: boolean;
+	exists: boolean;
+} {
+	const isFile = iconPath.startsWith('file:');
+	const relativePath = iconPath.replace(/^file:/, '');
+	const isSvg = relativePath.endsWith('.svg');
+	// Should not use safeJoinPath here because iconPath can be outside of the node class folder
+	const fullPath = path.join(baseDir, relativePath);
+	const exists = fileExistsWithCaseSync(fullPath);
+
+	return {
+		isValid: isFile && isSvg && exists,
+		isFile,
+		isSvg,
+		exists,
+	};
+}
+
+export function readPackageJsonNodes(packageJsonPath: string): string[] {
+	const n8nConfig = readPackageJsonN8n(packageJsonPath);
+	const nodePaths = n8nConfig.nodes ?? [];
+	return resolveN8nFilePaths(packageJsonPath, nodePaths);
+}
+
+export function areAllCredentialUsagesTestedByNodes(
+	credentialName: string,
+	packageDir: string,
+): boolean {
+	const packageJsonPath = safeJoinPath(packageDir, 'package.json');
+	if (!existsSync(packageJsonPath)) {
+		return false;
+	}
+
+	const nodeFiles = readPackageJsonNodes(packageJsonPath);
+	let hasAnyCredentialUsage = false;
+
+	for (const nodeFile of nodeFiles) {
+		const result = checkCredentialUsageInFile(nodeFile, credentialName);
+		if (result.hasUsage) {
+			hasAnyCredentialUsage = true;
+			if (!result.allTestedBy) {
+				return false; // Found usage without testedBy
+			}
+		}
+	}
+
+	return hasAnyCredentialUsage;
+}
+
+function checkCredentialUsageInFile(
+	nodeFile: string,
+	credentialName: string,
+): { hasUsage: boolean; allTestedBy: boolean } {
+	try {
+		const sourceCode = readFileSync(nodeFile, 'utf8');
+		const ast = parse(sourceCode, { jsx: false, range: true });
+
+		let hasUsage = false;
+		let allTestedBy = true;
+
+		simpleTraverse(ast, {
+			enter(node: TSESTree.Node) {
+				if (node.type === AST_NODE_TYPES.ClassDeclaration && isNodeTypeClass(node)) {
+					const descriptionProperty = findClassProperty(node, 'description');
+					if (
+						!descriptionProperty?.value ||
+						descriptionProperty.value.type !== AST_NODE_TYPES.ObjectExpression
+					) {
+						return;
+					}
+
+					const credentialsArray = findArrayLiteralProperty(
+						descriptionProperty.value,
+						'credentials',
+					);
+					if (!credentialsArray) {
+						return;
+					}
+
+					for (const element of credentialsArray.elements) {
+						const credentialInfo = extractCredentialInfoFromArray(element);
+						if (credentialInfo?.name === credentialName) {
+							hasUsage = true;
+							if (!credentialInfo.testedBy) {
+								allTestedBy = false;
+							}
+						}
+					}
+				}
+			},
+		});
+
+		return { hasUsage, allTestedBy };
+	} catch {
+		return { hasUsage: false, allTestedBy: true };
+	}
+}
+
+function fileExistsWithCaseSync(filePath: string): boolean {
+	try {
+		const dir = path.dirname(filePath);
+		const file = path.basename(filePath);
+		const files = new Set(readdirSync(dir));
+
+		return files.has(file);
+	} catch {
+		return false;
+	}
+}
+
+export function findSimilarSvgFiles(targetPath: string, baseDir: string): string[] {
+	try {
+		const targetFileName = path.basename(targetPath, path.extname(targetPath));
+		const targetDir = path.dirname(targetPath);
+		// Should not use safeJoinPath here because iconPath can be outside of the node class folder
+		const searchDir = path.join(baseDir, targetDir);
+
+		if (!existsSync(searchDir)) {
+			return [];
+		}
+
+		const files = readdirSync(searchDir);
+		const svgFileNames = files
+			.filter((file) => file.endsWith('.svg'))
+			.map((file) => path.basename(file, '.svg'));
+
+		const candidateNames = new Set(svgFileNames);
+		const similarNames = findSimilarStrings(targetFileName, candidateNames);
+
+		return similarNames.map((name) => path.join(targetDir, `${name}.svg`));
+	} catch {
+		return [];
+	}
+}

packages/@n8n/eslint-plugin-community-nodes/src/utils/index.ts

@@ -0,0 +1,3 @@
+export * from './ast-utils.js';
+export * from './file-utils.js';
+export * from './rule-creator.js';

packages/@n8n/eslint-plugin-community-nodes/src/utils/rule-creator.ts

@@ -0,0 +1,6 @@
+import { ESLintUtils } from '@typescript-eslint/utils';
+
+const REPO_URL = 'https://github.com/n8n-io/n8n';
+const DOCS_PATH = 'blob/master/packages/@n8n/eslint-plugin-community-nodes/docs/rules';
+
+export const createRule = ESLintUtils.RuleCreator((name) => `${REPO_URL}/${DOCS_PATH}/${name}.md`);