n8n-workflows/workflows/Simple Expense Tracker with n8n Chat, AI Agent and Google Sheets.json

{
  "id": "aLTkMiEDYXbMK4fT",
  "meta": {
    "instanceId": "5b860a91d7844b5237bb51cc58691ca8c3dc5b576f42d4d6bbedfb8d43d58ece",
    "templateCredsSetupCompleted": true
  },
  "name": "AI agent: expense tracker in Google Sheets and n8n chat",
  "tags": [],
  "nodes": [
    {
      "id": "9260b53e-6848-4f34-9643-311c58c807f6",
      "name": "AI Agent",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "position": [
        360,
        40
      ],
      "parameters": {
        "options": {
          "maxIterations": 3,
          "systemMessage": "You are a helpful accountant. Use save to db tool to save expense message to DB. respond with \"Your expense saved, here is the output of save sub-workflow:[data]\""
        }
      },
      "typeVersion": 1.7
    },
    {
      "id": "0d7a686c-42c2-4223-9f78-b454788fb6da",
      "name": "When chat message received",
      "type": "@n8n/n8n-nodes-langchain.chatTrigger",
      "position": [
        0,
        40
      ],
      "webhookId": "6a34ec84-459d-4cc4-83b6-06ae4c99dc8f",
      "parameters": {
        "options": {}
      },
      "typeVersion": 1.1
    },
    {
      "id": "f1f27aaf-cf13-40d9-b8f9-800a862f8bf0",
      "name": "Workflow Input Trigger",
      "type": "n8n-nodes-base.executeWorkflowTrigger",
      "position": [
        180,
        600
      ],
      "parameters": {
        "workflowInputs": {
          "values": [
            {
              "name": "input1"
            }
          ]
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "a1530601-1a91-45be-adef-2e0608bfe773",
      "name": "OpenAI Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        340,
        300
      ],
      "parameters": {
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "vHFEeel4RHFsjcMI",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "c6f9782e-6b9b-421e-8b10-9ef04cbbee8c",
      "name": "Window Buffer Memory",
      "type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
      "position": [
        500,
        300
      ],
      "parameters": {},
      "typeVersion": 1.3
    },
    {
      "id": "bbe1116a-1c66-496e-a9bf-747457e47bb0",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -760,
        200
      ],
      "parameters": {
        "width": 720,
        "height": 500,
        "content": "## Save your expenses via chat message. \n\nLLM will parse your message to structured JSON and save as a new row into Google Sheet.\n\n## Installation\n### 1. Set up Google Sheets:\nClone this Sheet:\nhttps://docs.google.com/spreadsheets/d/1D0r3tun7LF7Ypb21CmbTKEtn76WE-kaHvBCM5NdgiPU/edit?gid=0#gid=0\n\n(File -> Make a copy)\n\nChoose this sheet into \"Save expense into Google Sheets\" node.\n\n\n### 2. Fix sub-workflow dropdown: \nopen \"Parse msg and save to Sheets\" node (which is an n8n sub-workflow executor tool) and choose the SAME workflow in the dropdown. it will allow n8n to call \"Workflow Input Trigger\" properly when needed.\n\n\n### 3. Activate the workflow to make chat work properly.\nSent message to chat, something like \"car wash; 59.3 usd; 25 jan 2024\"\n\nyou should get a response:\nYour expense saved, here is the output of save sub-workflow:{\"cost\":59.3,\"descr\":\"car wash\",\"date\":\"2024-01-25\",\"msg\":\"car wash; 59.3 usd; 25 jan 2024\"}\n\nand new row in Google sheets should be inserted!"
      },
      "typeVersion": 1
    },
    {
      "id": "61a489f7-5b95-438a-81f0-1e3e8c445622",
      "name": "OpenAI Chat Model1",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        400,
        900
      ],
      "parameters": {
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "vHFEeel4RHFsjcMI",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "57908f61-ed9b-41a9-aba6-031bfc65bd31",
      "name": "Expense text to JSON parser",
      "type": "@n8n/n8n-nodes-langchain.informationExtractor",
      "position": [
        400,
        600
      ],
      "parameters": {
        "text": "=convert expense to JSON: \n\n{{ $json.input1 }}",
        "options": {},
        "attributes": {
          "attributes": [
            {
              "name": "cost",
              "type": "number",
              "required": true,
              "description": "expense cost"
            },
            {
              "name": "descr",
              "required": true,
              "description": "description of expense"
            },
            {
              "name": "date",
              "type": "date",
              "description": "date in UTC format. "
            }
          ]
        }
      },
      "typeVersion": 1
    },
    {
      "id": "23f123eb-c4d9-4e6c-a521-311498d40d61",
      "name": "Save expense into Google Sheets",
      "type": "n8n-nodes-base.googleSheets",
      "position": [
        760,
        600
      ],
      "parameters": {
        "columns": {
          "value": {
            "msg": "={{ $('Workflow Input Trigger').item.json.input1 }}",
            "cost": "={{ $json.output.cost }}",
            "date": "={{ $json.output.date ? $json.output.date : $now }}",
            "descr": "={{ $json.output.descr }}"
          },
          "schema": [
            {
              "id": "date",
              "type": "string",
              "display": true,
              "removed": false,
              "required": false,
              "displayName": "date",
              "defaultMatch": false,
              "canBeUsedToMatch": true
            },
            {
              "id": "cost",
              "type": "string",
              "display": true,
              "removed": false,
              "required": false,
              "displayName": "cost",
              "defaultMatch": false,
              "canBeUsedToMatch": true
            },
            {
              "id": "descr",
              "type": "string",
              "display": true,
              "removed": false,
              "required": false,
              "displayName": "descr",
              "defaultMatch": false,
              "canBeUsedToMatch": true
            },
            {
              "id": "msg",
              "type": "string",
              "display": true,
              "removed": false,
              "required": false,
              "displayName": "msg",
              "defaultMatch": false,
              "canBeUsedToMatch": true
            }
          ],
          "mappingMode": "defineBelow",
          "matchingColumns": [],
          "attemptToConvertTypes": false,
          "convertFieldsToString": false
        },
        "options": {
          "useAppend": true
        },
        "operation": "append",
        "sheetName": {
          "__rl": true,
          "mode": "list",
          "value": "gid=0",
          "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1_BMLmh5MtmQarWuZIJANQZSkjaQ2Rc3YYLhwyz1Sec0/edit#gid=0",
          "cachedResultName": "Sheet1"
        },
        "documentId": {
          "__rl": true,
          "mode": "list",
          "value": "1_BMLmh5MtmQarWuZIJANQZSkjaQ2Rc3YYLhwyz1Sec0",
          "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1_BMLmh5MtmQarWuZIJANQZSkjaQ2Rc3YYLhwyz1Sec0/edit?usp=drivesdk",
          "cachedResultName": "ai-expense"
        }
      },
      "credentials": {
        "googleSheetsOAuth2Api": {
          "id": "vowsrhMIxy2PRDbH",
          "name": "Google Sheets account"
        }
      },
      "typeVersion": 4.5
    },
    {
      "id": "83770030-eab1-499a-b743-fe639e34fbb2",
      "name": "Parse msg and save to Sheets",
      "type": "@n8n/n8n-nodes-langchain.toolWorkflow",
      "notes": "Make sure that this SAME workflow is chosen in the Workflow dropdown!",
      "position": [
        660,
        300
      ],
      "parameters": {
        "name": "save_expense_in_db",
        "workflowId": {
          "__rl": true,
          "mode": "list",
          "value": "aLTkMiEDYXbMK4fT",
          "cachedResultName": "sub-workflow1"
        },
        "description": "Call this tool to save expense in db.",
        "workflowInputs": {
          "value": {
            "input1": "={{ $json.chatInput }}"
          },
          "schema": [
            {
              "id": "input1",
              "type": "string",
              "display": true,
              "removed": false,
              "required": false,
              "displayName": "input1",
              "defaultMatch": false,
              "canBeUsedToMatch": true
            }
          ],
          "mappingMode": "defineBelow",
          "matchingColumns": [],
          "attemptToConvertTypes": false,
          "convertFieldsToString": false
        }
      },
      "notesInFlow": true,
      "typeVersion": 2
    }
  ],
  "active": true,
  "pinData": {},
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "9ab1bbef-ffe8-462c-a201-920c6d250ade",
  "connections": {
    "OpenAI Chat Model": {
      "ai_languageModel": [
        [
          {
            "node": "AI Agent",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "OpenAI Chat Model1": {
      "ai_languageModel": [
        [
          {
            "node": "Expense text to JSON parser",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "Window Buffer Memory": {
      "ai_memory": [
        [
          {
            "node": "AI Agent",
            "type": "ai_memory",
            "index": 0
          }
        ]
      ]
    },
    "Workflow Input Trigger": {
      "main": [
        [
          {
            "node": "Expense text to JSON parser",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "When chat message received": {
      "main": [
        [
          {
            "node": "AI Agent",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Expense text to JSON parser": {
      "main": [
        [
          {
            "node": "Save expense into Google Sheets",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Parse msg and save to Sheets": {
      "ai_tool": [
        [
          {
            "node": "AI Agent",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    }
  }
}