This workflow follows the Agent → Chat Trigger recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"id": "FD0bHNaehP3LzCNN",
"name": "Chat with GitHub OpenAPI Specification using RAG (Pinecone and OpenAI)",
"tags": [],
"nodes": [
{
"id": "362cb773-7540-4753-a401-e585cdf4af8a",
"name": "When clicking \u2018Test workflow\u2019",
"type": "n8n-nodes-base.manualTrigger",
"position": [
0,
0
],
"parameters": {},
"typeVersion": 1
},
{
"id": "45470036-cae6-48d0-ac66-addc8999e776",
"name": "HTTP Request",
"type": "n8n-nodes-base.httpRequest",
"position": [
300,
0
],
"parameters": {
"url": "https://raw.githubusercontent.com/github/rest-api-description/refs/heads/main/descriptions/api.github.com/api.github.com.json",
"options": {}
},
"typeVersion": 4.2
},
{
"id": "a9e65897-52c9-4941-bf49-e1a659e442ef",
"name": "Pinecone Vector Store",
"type": "@n8n/n8n-nodes-langchain.vectorStorePinecone",
"position": [
520,
0
],
"parameters": {
"mode": "insert",
"options": {},
"pineconeIndex": {
"__rl": true,
"mode": "list",
"value": "n8n-demo",
"cachedResultName": "n8n-demo"
}
},
"credentials": {
"pineconeApi": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "c2a2354b-5457-4ceb-abfc-9a58e8593b81",
"name": "Default Data Loader",
"type": "@n8n/n8n-nodes-langchain.documentDefaultDataLoader",
"position": [
660,
180
],
"parameters": {
"options": {}
},
"typeVersion": 1
},
{
"id": "7338d9ea-ae8f-46eb-807f-a15dc7639fc9",
"name": "Recursive Character Text Splitter",
"type": "@n8n/n8n-nodes-langchain.textSplitterRecursiveCharacterTextSplitter",
"position": [
740,
360
],
"parameters": {
"options": {}
},
"typeVersion": 1
},
{
"id": "44fd7a59-f208-4d5d-a22d-e9f8ca9badf1",
"name": "When chat message received",
"type": "@n8n/n8n-nodes-langchain.chatTrigger",
"position": [
-20,
760
],
"parameters": {
"options": {}
},
"typeVersion": 1.1
},
{
"id": "51d819d6-70ff-428d-aa56-1d7e06490dee",
"name": "AI Agent",
"type": "@n8n/n8n-nodes-langchain.agent",
"position": [
320,
760
],
"parameters": {
"options": {
"systemMessage": "You are a helpful assistant providing information about the GitHub API and how to use it based on the OpenAPI V3 specifications."
}
},
"typeVersion": 1.7
},
{
"id": "aed548bf-7083-44ad-a3e0-163dee7423ef",
"name": "OpenAI Chat Model",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
220,
980
],
"parameters": {
"options": {}
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.1
},
{
"id": "dfe9f356-2225-4f4b-86c7-e56a230b4193",
"name": "Window Buffer Memory",
"type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
"position": [
420,
1020
],
"parameters": {},
"typeVersion": 1.3
},
{
"id": "4cf672ee-13b8-4355-b8e0-c2e7381671bc",
"name": "Vector Store Tool",
"type": "@n8n/n8n-nodes-langchain.toolVectorStore",
"position": [
580,
980
],
"parameters": {
"name": "GitHub_OpenAPI_Specification",
"description": "Use this tool to get information about the GitHub API. This database contains OpenAPI v3 specifications."
},
"typeVersion": 1
},
{
"id": "1df7fb85-9d4a-4db5-9bed-41d28e2e4643",
"name": "OpenAI Chat Model1",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
840,
1160
],
"parameters": {
"options": {}
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.1
},
{
"id": "7b52ef7a-5935-451e-8747-efe16ce288af",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-40,
-260
],
"parameters": {
"width": 640,
"height": 200,
"content": "## Indexing content in the vector database\nThis part of the workflow is responsible for extracting content, generating embeddings and sending them to the Pinecone vector store.\n\nIt requests the OpenAPI specifications from GitHub using a HTTP request. Then, it splits the file in chunks, generating embeddings for each chunk using OpenAI, and saving them in Pinecone vector DB."
},
"typeVersion": 1
},
{
"id": "3508d602-56d4-4818-84eb-ca75cdeec1d0",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-20,
560
],
"parameters": {
"width": 580,
"content": "## Querying and response generation \n\nThis part of the workflow is responsible for the chat interface, querying the vector store and generating relevant responses.\n\nIt uses OpenAI GPT 4o-mini to generate responses."
},
"typeVersion": 1
},
{
"id": "5a9808ef-4edd-4ec9-ba01-2fe50b2dbf4b",
"name": "Generate User Query Embedding",
"type": "@n8n/n8n-nodes-langchain.embeddingsOpenAi",
"position": [
480,
1400
],
"parameters": {
"options": {}
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.2
},
{
"id": "f703dc8e-9d4b-45e3-8994-789b3dfe8631",
"name": "Pinecone Vector Store (Querying)",
"type": "@n8n/n8n-nodes-langchain.vectorStorePinecone",
"position": [
440,
1220
],
"parameters": {
"options": {},
"pineconeIndex": {
"__rl": true,
"mode": "list",
"value": "n8n-demo",
"cachedResultName": "n8n-demo"
}
},
"credentials": {
"pineconeApi": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "ea64a7a5-1fa5-4938-83a9-271929733a8e",
"name": "Generate Embeddings",
"type": "@n8n/n8n-nodes-langchain.embeddingsOpenAi",
"position": [
480,
220
],
"parameters": {
"options": {}
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.2
},
{
"id": "65cbd4e3-91f6-441a-9ef1-528c3019e238",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
-820,
-260
],
"parameters": {
"width": 620,
"height": 320,
"content": "## RAG workflow in n8n\n\nThis is an example of how to use RAG techniques to create a chatbot with n8n. It is an API documentation chatbot that can answer questions about the GitHub API. It uses OpenAI for generating embeddings, the gpt-4o-mini LLM for generating responses and Pinecone as a vector database.\n\n### Before using this template\n* create OpenAI and Pinecone accounts\n* obtain API keys OpenAI and Pinecone \n* configure credentials in n8n for both\n* ensure you have a Pinecone index named \"n8n-demo\" or adjust the workflow accordingly."
},
"typeVersion": 1
}
],
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "2908105f-c20c-4183-bb9d-26e3559b9911",
"connections": {
"HTTP Request": {
"main": [
[
{
"node": "Pinecone Vector Store",
"type": "main",
"index": 0
}
]
]
},
"OpenAI Chat Model": {
"ai_languageModel": [
[
{
"node": "AI Agent",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Vector Store Tool": {
"ai_tool": [
[
{
"node": "AI Agent",
"type": "ai_tool",
"index": 0
}
]
]
},
"OpenAI Chat Model1": {
"ai_languageModel": [
[
{
"node": "Vector Store Tool",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Default Data Loader": {
"ai_document": [
[
{
"node": "Pinecone Vector Store",
"type": "ai_document",
"index": 0
}
]
]
},
"Generate Embeddings": {
"ai_embedding": [
[
{
"node": "Pinecone Vector Store",
"type": "ai_embedding",
"index": 0
}
]
]
},
"Window Buffer Memory": {
"ai_memory": [
[
{
"node": "AI Agent",
"type": "ai_memory",
"index": 0
}
]
]
},
"When chat message received": {
"main": [
[
{
"node": "AI Agent",
"type": "main",
"index": 0
}
]
]
},
"Generate User Query Embedding": {
"ai_embedding": [
[
{
"node": "Pinecone Vector Store (Querying)",
"type": "ai_embedding",
"index": 0
}
]
]
},
"Pinecone Vector Store (Querying)": {
"ai_vectorStore": [
[
{
"node": "Vector Store Tool",
"type": "ai_vectorStore",
"index": 0
}
]
]
},
"Recursive Character Text Splitter": {
"ai_textSplitter": [
[
{
"node": "Default Data Loader",
"type": "ai_textSplitter",
"index": 0
}
]
]
},
"When clicking \u2018Test workflow\u2019": {
"main": [
[
{
"node": "HTTP Request",
"type": "main",
"index": 0
}
]
]
}
}
}
Credentials you'll need
Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.
openAiApipineconeApi
For the full experience including quality scoring and batch install features for each workflow upgrade to Pro
How this works
This workflow enables developers and API enthusiasts to query GitHub's OpenAPI Specification through natural language conversations, delivering precise, context-aware responses without sifting through dense documentation. It leverages Retrieval-Augmented Generation (RAG) to pull relevant sections from the spec, making it ideal for those building or integrating with GitHub APIs who need quick insights into endpoints, parameters, or authentication methods. The core step involves an AI agent powered by OpenAI that retrieves and synthesises information from a Pinecone vector store, ensuring answers are accurate and up-to-date.
Use this workflow when exploring GitHub's API details interactively during development or troubleshooting, especially for complex queries that span multiple spec sections. Avoid it for simple lookups better handled by direct spec browsing, or if real-time GitHub updates are critical beyond periodic fetches via HTTP Request. Common variations include adapting it for other API specs like Stripe or Twilio by swapping the fetched document source.
About this workflow
Chat with GitHub OpenAPI Specification using RAG (Pinecone and OpenAI). Uses manualTrigger, httpRequest, vectorStorePinecone, documentDefaultDataLoader. Event-driven trigger; 17 nodes.
Source: https://github.com/Zie619/n8n-workflows — original creator credit. Request a take-down →
Related workflows
Workflows that share integrations, category, or trigger type with this one. All free to copy and import.
Alfred (funcional). Uses gmailTool, googleCalendarTool, gmail, embeddingsOpenAi. Event-driven trigger; 83 nodes.
Agent IA Projet Client. Uses executeWorkflowTrigger, lmChatOpenAi, toolWorkflow, vectorStoreQdrant. Event-driven trigger; 79 nodes.
This intelligent chatbot leverages cutting-edge financial APIs and AI-driven analysis to deliver comprehensive stock research reports. Get instant access to professional-grade investment analysis that
This advanced n8n workflow automates the full lead enrichment, qualification, and personalized outreach process tailored specifically for the B2B real estate sector. Integrating top platforms like Api
This n8n template automatically classifies incoming emails (Sales, Support, Internal, Finance, Promotions) and routes them to a dedicated OpenAI LLM Agent for processing. Depending on the category, th