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packages/@n8n/nodes-langchain/nodes/embeddings/EmbeddingsLemonade/EmbeddingsLemonade.node.ts

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+import { OpenAIEmbeddings } from '@langchain/openai';
+import {
+	NodeConnectionTypes,
+	type INodeType,
+	type INodeTypeDescription,
+	type ISupplyDataFunctions,
+	type SupplyData,
+} from 'n8n-workflow';
+
+import type { LemonadeApiCredentialsType } from '../../../credentials/LemonadeApi.credentials';
+
+import { logWrapper, getConnectionHintNoticeField } from '@n8n/ai-utilities';
+
+import { lemonadeDescription, lemonadeModel } from '../../llms/LMLemonade/description';
+
+export class EmbeddingsLemonade implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'Embeddings Lemonade',
+		name: 'embeddingsLemonade',
+		icon: 'file:lemonade.svg',
+		group: ['transform'],
+		version: 1,
+		description: 'Use Lemonade Embeddings',
+		defaults: {
+			name: 'Embeddings Lemonade',
+		},
+		...lemonadeDescription,
+		codex: {
+			categories: ['AI'],
+			subcategories: {
+				AI: ['Embeddings'],
+			},
+			resources: {
+				primaryDocumentation: [
+					{
+						url: 'https://docs.n8n.io/integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.embeddingslemonade/',
+					},
+				],
+			},
+		},
+
+		inputs: [],
+
+		outputs: [NodeConnectionTypes.AiEmbedding],
+		outputNames: ['Embeddings'],
+		properties: [getConnectionHintNoticeField([NodeConnectionTypes.AiVectorStore]), lemonadeModel],
+	};
+
+	async supplyData(this: ISupplyDataFunctions, itemIndex: number): Promise<SupplyData> {
+		const modelName = this.getNodeParameter('model', itemIndex) as string;
+		const credentials = (await this.getCredentials('lemonadeApi')) as LemonadeApiCredentialsType;
+
+		// Ensure we have an API key for OpenAI client validation
+		const apiKey = credentials.apiKey || 'lemonade-placeholder-key';
+
+		// Build configuration object separately like official OpenAI nodes
+		const configuration: any = {
+			baseURL: credentials.baseUrl,
+		};
+
+		// Add custom headers if API key is provided
+		if (credentials.apiKey) {
+			configuration.defaultHeaders = {
+				Authorization: `Bearer ${credentials.apiKey}`,
+			};
+		}
+
+		const embeddings = new OpenAIEmbeddings({
+			apiKey,
+			model: modelName,
+			configuration,
+		});
+
+		return {
+			response: logWrapper(embeddings, this),
+		};
+	}
+}