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packages/@n8n/nodes-langchain/nodes/agents/Agent/AgentTool.node.ts

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+import type { INodeTypeBaseDescription, IVersionedNodeType } from 'n8n-workflow';
+import { VersionedNodeType } from 'n8n-workflow';
+
+import { AgentToolV2 } from './V2/AgentToolV2.node';
+import { AgentToolV3 } from './V3/AgentToolV3.node';
+
+export class AgentTool extends VersionedNodeType {
+	constructor() {
+		const baseDescription: INodeTypeBaseDescription = {
+			displayName: 'AI Agent Tool',
+			name: 'agentTool',
+			icon: 'fa:robot',
+			iconColor: 'black',
+			group: ['transform'],
+			description: 'Generates an action plan and executes it. Can use external tools.',
+			codex: {
+				alias: ['LangChain', 'Chat', 'Conversational', 'Plan and Execute', 'ReAct', 'Tools'],
+				categories: ['AI'],
+				subcategories: {
+					AI: ['Tools'],
+					Tools: ['Recommended Tools'],
+				},
+			},
+			defaultVersion: 3,
+		};
+
+		const nodeVersions: IVersionedNodeType['nodeVersions'] = {
+			// Should have the same versioning as Agent node
+			// because internal agent logic often checks for node version
+			2.2: new AgentToolV2(baseDescription),
+			3: new AgentToolV3(baseDescription),
+		};
+
+		super(nodeVersions, baseDescription);
+	}
+}