David Roberts This workflow corresponds to n8n.io template #2165 — we link there as the canonical source.
This workflow follows the Chat Trigger → Documentdefaultdataloader 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 →
{
"meta": {
"templateCredsSetupCompleted": true
},
"nodes": [
{
"id": "e2e61eae-6306-47db-908c-9d82758f6516",
"name": "When clicking \"Execute Workflow\"",
"type": "n8n-nodes-base.manualTrigger",
"position": [
-660,
40
],
"parameters": {},
"typeVersion": 1
},
{
"id": "a45afcc0-d780-462a-9ed7-27daf01363a7",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-500,
-140
],
"parameters": {
"color": 7,
"width": 1086.039382705461,
"height": 728.4168721167887,
"content": "## 1. Setup: Fetch file from Google Drive, split it into chunks and insert into a vector database\nNote that running this part multiple times will insert multiple copies into your DB"
},
"typeVersion": 1
},
{
"id": "a3c56569-0728-4246-8d87-fa106d373566",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
-960,
-60
],
"parameters": {
"height": 350.7942096493649,
"content": "# Try me out\n1. In Pinecone, create an index with 1536 dimensions and select it in the two vector store nodes\n2. Populate Pinecone by clicking the 'test workflow' button below\n3. Click the 'chat' button below and enter the following:\n\n_Which email provider does the creator of Bitcoin use?_"
},
"typeVersion": 1
},
{
"id": "c1543b8a-dbea-42a9-a35e-e22ed86f565b",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-500,
640
],
"parameters": {
"color": 7,
"width": 1594,
"height": 529,
"content": "## 2. Chat with file, getting citations in reponse"
},
"typeVersion": 1
},
{
"id": "5300d5dd-4186-4402-9442-88adab4e9a89",
"name": "Sticky Note4",
"type": "n8n-nodes-base.stickyNote",
"position": [
-480,
-40
],
"parameters": {
"color": 7,
"width": 179.58883583572606,
"height": 257.75985739596473,
"content": "Will fetch the Bitcoin whitepaper, but you can change this"
},
"typeVersion": 1
},
{
"id": "9f707f2b-6cb2-47b8-88fc-65cfd09b6cae",
"name": "Pinecone Vector Store",
"type": "@n8n/n8n-nodes-langchain.vectorStorePinecone",
"position": [
80,
40
],
"parameters": {
"mode": "insert",
"options": {},
"pineconeIndex": {
"__rl": true,
"mode": "id",
"value": "test-index"
}
},
"credentials": {
"pineconeApi": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "a32ac59e-efdc-4ff3-92dd-be794c2be7f7",
"name": "When chat message received",
"type": "@n8n/n8n-nodes-langchain.chatTrigger",
"position": [
-660,
760
],
"parameters": {
"options": {}
},
"typeVersion": 1.1
},
{
"id": "e14145d2-0c18-4813-9555-263314cb0376",
"name": "OpenAI Chat Model1",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
340,
980
],
"parameters": {
"model": {
"__rl": true,
"mode": "list",
"value": "gpt-4o-mini"
},
"options": {}
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.2
},
{
"id": "e6863abd-d3df-4b45-9083-96b82cd46773",
"name": "Set file URL in Google Drive",
"type": "n8n-nodes-base.set",
"position": [
-440,
40
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "dc7a70e3-9b04-404b-8892-ba0fcc4274c2",
"name": "file_url",
"type": "string",
"value": " https://drive.google.com/file/d/11Koq9q53nkk0F5Y8eZgaWJUVR03I4-MM/view"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "80d241f1-7c8a-489e-9255-84bc79ec11c7",
"name": "Download file",
"type": "n8n-nodes-base.googleDrive",
"position": [
-220,
40
],
"parameters": {
"fileId": {
"__rl": true,
"mode": "url",
"value": "={{ $json.file_url }}"
},
"options": {},
"operation": "download"
},
"credentials": {
"googleDriveOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 3
},
{
"id": "8483b283-1ff4-4540-891a-09886c146e16",
"name": "Default Data Loader",
"type": "@n8n/n8n-nodes-langchain.documentDefaultDataLoader",
"position": [
180,
240
],
"parameters": {
"options": {
"metadata": {
"metadataValues": [
{
"name": "file_url",
"value": "={{ $('Set file URL in Google Drive').first().json.file_url }}"
},
{
"name": "file_name",
"value": "={{ $('Download file').first().binary.data.fileName }}"
}
]
}
},
"dataType": "binary"
},
"typeVersion": 1
},
{
"id": "c262df34-b2d9-4f48-b975-d694469e6e5a",
"name": "Embeddings OpenAI2",
"type": "@n8n/n8n-nodes-langchain.embeddingsOpenAi",
"position": [
-220,
980
],
"parameters": {
"options": {}
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.2
},
{
"id": "45c8e8cb-a29e-48ad-985f-e0136065840f",
"name": "Embeddings OpenAI",
"type": "@n8n/n8n-nodes-langchain.embeddingsOpenAi",
"position": [
40,
240
],
"parameters": {
"options": {}
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.2
},
{
"id": "8c852568-f100-4849-a06f-86e71733512a",
"name": "Recursive Character Text Splitter",
"type": "@n8n/n8n-nodes-langchain.textSplitterRecursiveCharacterTextSplitter",
"position": [
260,
400
],
"parameters": {
"options": {},
"chunkSize": 3000,
"chunkOverlap": 200
},
"typeVersion": 1
},
{
"id": "319e5b2d-c648-4ef5-8238-7732c62d34f5",
"name": "Set max chunks to send to model",
"type": "n8n-nodes-base.set",
"position": [
-420,
760
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "33f4addf-72f3-4618-a6ba-5b762257d723",
"name": "chunks",
"type": "number",
"value": 4
}
]
},
"includeOtherFields": true
},
"typeVersion": 3.4
},
{
"id": "91b9132e-ef51-4044-be1b-f391aeeb467c",
"name": "Get top chunks matching query",
"type": "@n8n/n8n-nodes-langchain.vectorStorePinecone",
"position": [
-220,
760
],
"parameters": {
"mode": "load",
"topK": "={{ $json.chunks }}",
"prompt": "={{ $json.chatInput }}",
"options": {},
"pineconeIndex": {
"__rl": true,
"mode": "id",
"value": "test-index"
}
},
"credentials": {
"pineconeApi": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "5ad6e0fd-c296-4507-8232-164b5be57f4a",
"name": "Prepare chunks",
"type": "n8n-nodes-base.code",
"position": [
140,
760
],
"parameters": {
"jsCode": "let out = \"\"\nfor (const i in $input.all()) {\n let itemText = \"--- CHUNK \" + i + \" ---\\n\"\n itemText += $input.all()[i].json.document.pageContent + \"\\n\"\n itemText += \"\\n\"\n out += itemText\n}\n\nreturn {\n 'context': out\n};"
},
"typeVersion": 2
},
{
"id": "770b066a-abb2-443e-bcaa-14632c6696f4",
"name": "Answer the query based on chunks",
"type": "@n8n/n8n-nodes-langchain.informationExtractor",
"position": [
340,
760
],
"parameters": {
"text": "={{ $json.context }}\n\nQuestion: {{ $('When chat message received').first().json.chatInput }}\nHelpful Answer:",
"options": {
"systemPromptTemplate": "=Use the following pieces of context to answer the question at the end. If you don't know the answer, just say that you don't know, don't try to make up an answer. Important: In your response, also include the the indexes of the chunks you used to generate the answer."
},
"schemaType": "manual",
"inputSchema": "{\n \"type\": \"object\",\n \"required\": [\"answer\", \"citations\"],\n \"properties\": {\n \"answer\": {\n \"type\": \"string\"\n },\n \"citations\": {\n \"type\": \"array\",\n \"items\": {\n \"type\": \"number\"\n }\n }\n }\n}"
},
"typeVersion": 1
},
{
"id": "e43abc0c-cedf-4e73-a766-7fad57601cfe",
"name": "Compose citations",
"type": "n8n-nodes-base.set",
"position": [
700,
760
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "ace6185e-8b3d-4f89-ae36-dfe0c391a0a9",
"name": "citations",
"type": "array",
"value": "={{ $json.citations.map(i => '[' + $('Get top chunks matching query').all()[$json.citations].json.document.metadata.file_name + ', lines ' + $('Get top chunks matching query').all()[$json.citations].json.document.metadata['loc.lines.from'] + '-' + $('Get top chunks matching query').all()[$json.citations].json.document.metadata['loc.lines.to'] + ']') }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "f82df340-42fc-4e92-9e9d-d808f19e0407",
"name": "Generate response",
"type": "n8n-nodes-base.set",
"position": [
900,
760
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "11396286-0378-4c3a-86e1-c9ef51afbfc7",
"name": "text",
"type": "string",
"value": "={{ $json.answer }} {{ $if(!$json.citations.isEmpty(), \"\\n\" + $json.citations.join(\"\"), '') }}"
}
]
}
},
"typeVersion": 3.4
}
],
"connections": {
"Download file": {
"main": [
[
{
"node": "Pinecone Vector Store",
"type": "main",
"index": 0
}
]
]
},
"Prepare chunks": {
"main": [
[
{
"node": "Answer the query based on chunks",
"type": "main",
"index": 0
}
]
]
},
"Compose citations": {
"main": [
[
{
"node": "Generate response",
"type": "main",
"index": 0
}
]
]
},
"Embeddings OpenAI": {
"ai_embedding": [
[
{
"node": "Pinecone Vector Store",
"type": "ai_embedding",
"index": 0
}
]
]
},
"Embeddings OpenAI2": {
"ai_embedding": [
[
{
"node": "Get top chunks matching query",
"type": "ai_embedding",
"index": 0
}
]
]
},
"OpenAI Chat Model1": {
"ai_languageModel": [
[
{
"node": "Answer the query based on chunks",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Default Data Loader": {
"ai_document": [
[
{
"node": "Pinecone Vector Store",
"type": "ai_document",
"index": 0
}
]
]
},
"When chat message received": {
"main": [
[
{
"node": "Set max chunks to send to model",
"type": "main",
"index": 0
}
]
]
},
"Set file URL in Google Drive": {
"main": [
[
{
"node": "Download file",
"type": "main",
"index": 0
}
]
]
},
"Get top chunks matching query": {
"main": [
[
{
"node": "Prepare chunks",
"type": "main",
"index": 0
}
]
]
},
"Set max chunks to send to model": {
"main": [
[
{
"node": "Get top chunks matching query",
"type": "main",
"index": 0
}
]
]
},
"Answer the query based on chunks": {
"main": [
[
{
"node": "Compose citations",
"type": "main",
"index": 0
}
]
]
},
"When clicking \"Execute Workflow\"": {
"main": [
[
{
"node": "Set file URL in Google Drive",
"type": "main",
"index": 0
}
]
]
},
"Recursive Character Text Splitter": {
"ai_textSplitter": [
[
{
"node": "Default Data Loader",
"type": "ai_textSplitter",
"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.
googleDriveOAuth2ApiopenAiApipineconeApi
Pro
For the full experience including quality scoring and batch install features for each workflow upgrade to Pro
About this workflow
This workflow allows you to ask questions about a PDF document. The answers are provided by an AI model of your choice, and the answer includes a citation pointing to the information it used.
Source: https://n8n.io/workflows/2165/ — original creator credit. Request a take-down →
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