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Finance, Invoices & Accounting

Personal Expense Tracker API with Google Sheets

When an expense arrives by webhook, it validates and formats it, saves it to Google Sheets, calculates the monthly summary, and responds.

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What it does

# 💰 Personal Expense Tracker API ## What This Workflow Does Provides a complete expense tracking system with webhook API for adding expenses and automatic Google Sheets storage with daily summaries. ## How It Works 1. API Endpoint: Receives expenses via POST webhook 2. Data Validation: Ensures proper format and categories 3. Google Sheets Storage: Automatically saves to spreadsheet 4. Daily Reports: Sends summary at 8 PM daily 5. Real-time Responses: Returns success/error immediately ## API Usage Send POST to: /webhook/add-expense json { "amount": 25.50, "category": "Food", "description": "Lunch at cafe", "payment_method": "Credit Card" } ## Categories • Food • Transport • Shopping • Bills • Entertainment • Health • Other ## Setup Required 1. Create Google Sheets with 'Expenses' sheet 2. Headers: Date | Category | Description | Amount | Payment Method 3. Replace SPREADSHEET_ID in nodes 4. Connect Google Sheets OAuth2 5. Activate workflow ## Perfect For ✅ Personal finance tracking ✅ Mobile app integration ✅ Family expense sharing ✅ Small business expense logging Includes automatic validation, error handling, and daily summaries.

The steps

  1. Expense Input Webhook
  2. Validate and Format Expense Data
  3. Save Expense to Google Sheets
  4. Calculate Monthly Summary
  5. Send Success Response
  6. Send Error Response
  7. Daily Summary Schedule
  8. Read Today's Expenses from Sheet
  9. Calculate Daily Total

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