AI Chat with Database

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 →

{
  "nodes": [
    {
      "id": "d277b81b-05fd-4733-807a-f63eb6e87742",
      "name": "OpenAI Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        960,
        500
      ],
      "parameters": {
        "model": "gpt-4",
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "c56b3269-32b0-4782-ad50-74af8ee2d8a7",
      "name": "AI Agent",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "position": [
        960,
        320
      ],
      "parameters": {
        "agent": "sqlAgent",
        "input": "={{ $json.chatInput }}",
        "options": {},
        "dataSource": "postgres"
      },
      "credentials": {
        "postgres": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1.2
    },
    {
      "id": "8781c9fd-f6de-4a85-b05d-8f55647304f7",
      "name": "Chat Trigger",
      "type": "@n8n/n8n-nodes-langchain.chatTrigger",
      "position": [
        740,
        320
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "3c485755-0594-4a5a-b38c-440694668181",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        620,
        480
      ],
      "parameters": {
        "content": "## Try me out\nClick the 'chat' button at the bottom of the canvas and paste in:\n\n_Which tables are available?_"
      },
      "typeVersion": 1
    },
    {
      "id": "8f296643-7375-4974-be5d-9a4223d11e5f",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        940,
        240
      ],
      "parameters": {
        "color": 7,
        "width": 297,
        "height": 205,
        "content": "This workflow uses a Postgres DB, but you could swap it for a MySQL or SQLite one"
      },
      "typeVersion": 1
    }
  ],
  "connections": {
    "Chat Trigger": {
      "main": [
        [
          {
            "node": "AI Agent",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "OpenAI Chat Model": {
      "ai_languageModel": [
        [
          {
            "node": "AI Agent",
            "type": "ai_languageModel",
            "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.

• openAiApi
• postgres

About this workflow

Chat With A Database Using Ai. Uses lmChatOpenAi, agent, chatTrigger, stickyNote. Chat trigger; 5 nodes.

Source: https://github.com/Zie619/n8n-workflows — original creator credit. Request a take-down →

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