workflows/RAG Test.json

{
  "name": "RAG Test",
  "nodes": [
    {
      "parameters": {
        "operation": "executeQuery",
        "query": "select *\nfrom public.match_knowledge_embeddings(\n  $1::vector(1536),\n  0.3::double precision,\n  3\n);",
        "options": {
          "queryReplacement": "=={{ $json.embedding }}"
        }
      },
      "type": "n8n-nodes-base.postgres",
      "typeVersion": 2.6,
      "position": [
        -384,
        48
      ],
      "id": "1d733cd5-7e14-42b6-9abd-faf896d94ab7",
      "name": "Execute a SQL query",
      "credentials": {
        "postgres": {
          "id": "Fybq1JpiX9XAfX8w",
          "name": "Postgres account"
        }
      }
    },
    {
      "parameters": {
        "jsCode": "return {\n  json: {\n    query_text: \"What time will you close?\"\n  }\n};"
      },
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        -1296,
        48
      ],
      "id": "3c822e31-5bfc-480a-addb-49456da71a3d",
      "name": "Single Query"
    },
    {
      "parameters": {
        "method": "POST",
        "url": "https://openrouter.ai/api/v1/embeddings",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "Authorization",
              "value": "Bearer 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"
            },
            {
              "name": "Content-Type",
              "value": "application/json"
            }
          ]
        },
        "sendBody": true,
        "bodyParameters": {
          "parameters": [
            {
              "name": "model",
              "value": "=openai/text-embedding-3-small"
            },
            {
              "name": "input",
              "value": "={{ $json.query_text }}"
            }
          ]
        },
        "options": {}
      },
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.4,
      "position": [
        -1024,
        48
      ],
      "id": "b5a9c78f-8264-4798-8e57-2131c324e6be",
      "name": "Embedding"
    },
    {
      "parameters": {
        "jsCode": "const embedding = $json?.data?.[0]?.embedding;\nif (!Array.isArray(embedding)) throw new Error(\"Missing query embedding\");\nreturn { json: { ...$json, embedding } };"
      },
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        -720,
        48
      ],
      "id": "452ca9a5-9c05-45d8-8eed-b5b617b53929",
      "name": "Extract Query Embedding"
    },
    {
      "parameters": {
        "jsCode": "const rows = $input.all().map(i => i.json);\n\nlet context = \"Relevant knowledge base entries:\\n\";\nrows.forEach((r, idx) => {\n  context += `\\n[${idx + 1}] ${r.content}\\n(similarity: ${Number(r.similarity).toFixed(3)})\\n`;\n});\n\nreturn [{ json: { knowledge_context: context, matches: rows.length } }];"
      },
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        -144,
        32
      ],
      "id": "f2a7867a-cf15-4da2-94e4-656a4f97f8ab",
      "name": "Build the knowledge_context"
    }
  ],
  "pinData": {
    "Execute a SQL query": [
      {
        "json": {
          "id": "1",
          "content": "Q: What are your business hours?\nA: We're open Monday to Friday, 9 AM to 6 PM Eastern Time. We're closed on weekends and major holidays.\nCategory: general",
          "metadata": {
            "kb_id": 1,
            "category": "general",
            "question": "What are your business hours?"
          },
          "similarity": 0.490192056286809
        }
      }
    ]
  },
  "connections": {
    "Execute a SQL query": {
      "main": [
        [
          {
            "node": "Build the knowledge_context",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Single Query": {
      "main": [
        [
          {
            "node": "Embedding",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Embedding": {
      "main": [
        [
          {
            "node": "Extract Query Embedding",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Extract Query Embedding": {
      "main": [
        [
          {
            "node": "Execute a SQL query",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {
    "executionOrder": "v1",
    "binaryMode": "separate",
    "availableInMCP": false
  },
  "versionId": "e13b04f2-d343-4f88-9448-927d0dba109a",
  "meta": {
    "instanceId": "86e40966ec50420e5d15bcd1dde77ea07adba792a75f16ea8e1aeab3d840cb1f"
  },
  "id": "frg5tLGMpk77WvIB",
  "tags": []
}