Persönliche Ausgaben-Tracker-API mit Google Sheets

# 💰 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.