Chat with Google Sheet

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  "name": "Chat with Google Sheet",
  "tags": [],
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        "content": "### Sub-workflow: Custom tool
This can be called by the agent above. It returns three different types of data from the Google Sheet, which can be used together for more complex queries without returning the whole sheet (which might be too big for GPT to handle)"
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        "content": "### Main workflow: AI agent using custom tool"
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        "content": "## Try me out

Click the 'Chat' button at the bottom and enter:

_Which is our biggest customer?_"
      },
      "typeVersion": 1
    },
    {
      "id": "f895d926-0f70-415b-9492-c3ecf186e761",
      "name": "Get Google sheet contents",
      "type": "n8n-nodes-base.googleSheets",
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        "options": {},
        "sheetName": {
          "__rl": true,
          "mode": "url",
          "value": "={{ $json.sheetUrl }}"
        },
        "documentId": {
          "__rl": true,
          "mode": "url",
          "value": "={{ $json.sheetUrl }}"
        }
      },
      "credentials": {
        "googleSheetsOAuth2Api": {
          "id": "cTLaIZBSFJlHuZNs",
          "name": "Google Sheets account"
        }
      },
      "typeVersion": 4.2
    },
    {
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      "name": "Set Google Sheet URL",
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      "position": [
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      "parameters": {
        "fields": {
          "values": [
            {
              "name": "sheetUrl",
              "stringValue": "https://docs.google.com/spreadsheets/d/1GjFBV8HpraNWG_JyuaQAgTb3zUGguh0S_25nO0CMd8A/edit#gid=736425281"
            }
          ]
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              "name": "response",
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            }
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      "position": [
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      "parameters": {
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      "typeVersion": 2
    },
    {
      "id": "616eebc5-5c5c-4fa1-b13f-61a477742c72",
      "name": "List columns tool",
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        "name": "list_columns",
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              "stringValue": "column_names"
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          ]
        },
        "workflowId": "={{ $workflow.id }}",
        "description": "=List all column names in customer data

Call this tool to find out what data is available for each customer. It should be called first at the beginning to understand which columns are available for querying."
      },
      "typeVersion": 1
    },
    {
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      "name": "Get customer tool",
      "type": "@n8n/n8n-nodes-langchain.toolWorkflow",
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      "parameters": {
        "name": "get_customer",
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            {
              "name": "operation",
              "stringValue": "row"
            }
          ]
        },
        "workflowId": "={{ $workflow.id }}",
        "description": "=Get all columns for a given customer

The input should be a stringified row number of the customer to fetch; only single string inputs are allowed. Returns a JSON object with all the column names and their values."
      },
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              "name": "operation",
              "stringValue": "column_values"
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          ]
        },
        "workflowId": "={{ $workflow.id }}",
        "description": "=Get the specified column value for all customers

Use this tool to find out which customers have a certain value for a given column. Returns an array of JSON objects, one per customer. Each JSON object includes the column being requested plus the row_number column. Input should be a single string representing the name of the column to fetch.
"
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        "content": "These tools all call the sub-workflow below"
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      "parameters": {
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        "height": 226.64416053838073,
        "content": "Change the URL of the Google Sheet here"
      },
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    },
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              "name": "={{ $('Execute Workflow Trigger').item.json.query }}",
              "stringValue": "={{ $json[$('Execute Workflow Trigger').item.json.query] }}"
            },
            {
              "name": "row_number",
              "stringValue": "={{ $json.row_number }}"
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          "suffix": "Begin! Use `list_columns` tool first to determine which columns are available.

	Question: {input}
	Thought:{agent_scratchpad}",
          "returnIntermediateSteps": false
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      "typeVersion": 1.3
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            "node": "Prepare output",
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    "Set Google Sheet URL": {
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