{
  "meta": {
    "instanceId": "89c9c2dbc29ad74e9e02caaf3e27ce718c567278274962e355a9a9679d5f3af7"
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  "nodes": [
    {
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      "name": "OpenAI Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
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      "parameters": {
        "model": {
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          "mode": "list",
          "value": "gpt-4o-mini"
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        "options": {}
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      "typeVersion": 1.2
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      "name": "Fetch Essay List",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
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      "parameters": {
        "url": "http://www.paulgraham.com/articles.html",
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      "parameters": {
        "options": {},
        "operation": "extractHtmlContent",
        "extractionValues": {
          "values": [
            {
              "key": "essay",
              "attribute": "href",
              "cssSelector": "table table a",
              "returnArray": true,
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      "parameters": {
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        "fieldToSplitOut": "essay"
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      "name": "Fetch essay texts",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
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      "parameters": {
        "url": "=http://www.paulgraham.com/{{ $json.essay }}",
        "options": {}
      },
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    },
    {
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      ],
      "parameters": {
        "maxItems": 3
      },
      "typeVersion": 1
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    {
      "id": "318aeeed-fcce-4de2-aa04-92033ef01f28",
      "name": "Extract Text Only",
      "type": "n8n-nodes-base.html",
      "position": [
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      ],
      "parameters": {
        "options": {},
        "operation": "extractHtmlContent",
        "extractionValues": {
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      "position": [
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      "parameters": {
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        "content": "## Scrape latest Paul Graham essays"
      },
      "typeVersion": 1
    },
    {
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      "name": "Sticky Note5",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1120,
        -120
      ],
      "parameters": {
        "width": 625,
        "height": 607,
        "content": "## Load into Milvus vector store"
      },
      "typeVersion": 1
    },
    {
      "id": "95e9a59d-1832-4eb7-b58d-ba391c1acb1c",
      "name": "When chat message received",
      "type": "@n8n/n8n-nodes-langchain.chatTrigger",
      "position": [
        -200,
        380
      ],
      "webhookId": "cd2703a7-f912-46fe-8787-3fb83ea116ab",
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      "position": [
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      ],
      "parameters": {
        "width": 280,
        "height": 180,
        "content": "## Step 1n1. Set up a Milvus server based on [this guide](https://milvus.io/docs/install_standalone-docker-compose.md). And then create a collection named `my_collection`.n2. Click this workflow to load scrape and load Paul Graham essays to Milvus collection.n"
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      "position": [
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      ],
      "parameters": {
        "mode": "insert",
        "options": {
          "clearCollection": true
        },
        "milvusCollection": {
          "__rl": true,
          "mode": "list",
          "value": "my_collection",
          "cachedResultName": "my_collection"
        }
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      "name": "Default Data Loader",
      "type": "@n8n/n8n-nodes-langchain.documentDefaultDataLoader",
      "position": [
        1460,
        220
      ],
      "parameters": {
        "options": {},
        "jsonData": "={{ $('Extract Text Only').item.json.data }}",
        "jsonMode": "expressionData"
      },
      "typeVersion": 1
    },
    {
      "id": "26730b7b-2bb9-46f8-83c3-3d4ffdfdef57",
      "name": "Embeddings OpenAI",
      "type": "@n8n/n8n-nodes-langchain.embeddingsOpenAi",
      "position": [
        1320,
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      ],
      "parameters": {
        "options": {}
      },
      "typeVersion": 1.2
    },
    {
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      "name": "Recursive Character Text Splitter",
      "type": "@n8n/n8n-nodes-langchain.textSplitterRecursiveCharacterTextSplitter",
      "position": [
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      ],
      "parameters": {
        "options": {},
        "chunkSize": 6000
      },
      "typeVersion": 1
    },
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      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
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      ],
      "parameters": {
        "width": 280,
        "height": 120,
        "content": "## Step 2nChat with this QA Chain with Milvus retrievern"
      },
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    },
    {
      "id": "f5b7410f-37c7-40ff-b841-12ed04252317",
      "name": "Embeddings OpenAI1",
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        "milvusCollection": {
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          "mode": "list",
          "value": "my_collection",
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      "parameters": {
        "color": 7,
        "width": 574,
        "height": 629,
        "content": ""
      },
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      "name": "Q&A Chain to Retrieve from Milvus and Answer Question",
      "type": "@n8n/n8n-nodes-langchain.chainRetrievalQa",
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      "type": "@n8n/n8n-nodes-langchain.retrieverVectorStore",
      "position": [
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        580
      ],
      "parameters": {},
      "typeVersion": 1
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  "connections": {
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            "node": "Extract essay names",
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    "OpenAI Chat Model": {
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            "node": "Q&A Chain to Retrieve from Milvus and Answer Question",
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            "type": "main",
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    },
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            "node": "Q&A Chain to Retrieve from Milvus and Answer Question",
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            "node": "Q&A Chain to Retrieve from Milvus and Answer Question",
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            "node": "Fetch Essay List",
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            "index": 0
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            "node": "Default Data Loader",
            "type": "ai_textSplitter",
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          }
        ]
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}