Track Expenses Automatically with Telegram Bot using GPT-4o, OCR and Voice Recognition

Description

Personal Expense Tracker Bot 💰 AI-powered Telegram bot for effortless expense tracking. Send receipts, voice messages, or text - the bot automatically extracts and categorizes your expenses. ✨ Key Features 📸 Receipt & Invoice OCR** - Send photos of receipts or PDF invoices, AI extracts expense data automatically 🎤 Voice Messages** - Speak your expenses naturally, audio is transcribed and processed 💬 Natural Language** - Just type "spent 50 on groceries" or any text format 🌍 Multilingual** - Processes documents in any language (EN, DE, PT, etc.) 📊 Smart Statistics** - Get monthly totals, category breakdowns, multi-month comparisons 🔒 Private & Secure** - Single-user authorization, only you can access your data ⚡ Zero Confirmation** - Expenses are added instantly, no annoying "confirm?" prompts 🎯 How It Works Send expense data via Telegram: Photo of receipt PDF invoice Voice message Text message AI processes automatically: Extracts amount, date, vendor Categorizes expense Stores in organized format Query your expenses: "Show my expenses for November" "How much did I spend on groceries?" "Compare last 3 months" 📋 Expense Categories Groceries, Transportation, Housing, Utilities, Healthcare, Entertainment, Dining Out, Clothing, Education, Subscriptions, Personal Care, Gifts, Travel, Sports, Other 🔧 Setup Requirements 1. Telegram Bot Create a Telegram bot via @BotFather and get your API token. Configure credentials for nodes: Input, WelcomeMessage, GetAudioFile, GetAttachedFile, GetAttachedPhoto ReplyText, NotAuthorizedMessage, DeleteProcessing 2. OpenRouter API Get API key from OpenRouter for AI processing. Configure credentials for: Gpt4o (main processing) Sonnet45 (expense assistant) 3. Ainoflow API Get API key from Ainoflow for storage and OCR. Configure Bearer credentials for: GetConfig, SaveConfig ExtractFileText, ExtractImageText TranscribeRecording JsonStorageMcp (MCP tool) 🏗️ Workflow Architecture | Section | Description | |---------|-------------| | Message Trigger | Receives all Telegram messages | | Bot Privacy | Locks bot to first user, rejects unauthorized access | | Chat Message / Audio | Routes text and voice messages to AI | | Document / Photo | Extracts text from files via OCR and forwards to AI | | Root Agent | Routes messages to Expense Assistant, validates responses | | Expense Assistant | Core logic: stores expenses, calculates statistics | | Result / Reply | Sends formatted response back to Telegram | | Cleanup / Reset | Manual trigger to delete all data (⚠️ use with caution) | 💬 Usage Examples Adding Expenses 📸 [Send receipt photo] → Added: 45.50 EUR - Groceries (Lidl) 🎤 "Bought coffee for five euros" → Added: 5.00 EUR - Dining Out (coffee) 💬 "50 uber" → Added: 50.00 EUR - Transportation (uber) Querying Expenses "Show my expenses" → November 2025: 1,250.50 EUR (23 expenses) Top: Groceries 450€, Transportation 280€, Dining 220€ "How much on entertainment this month?" → Entertainment: 85.00 EUR (3 expenses) "Compare October and November" → Oct: 980€ | Nov: 1,250€ (+27%) 📦 Data Storage Expenses are stored in JSON format organized by month (YYYY-MM): { "id": "uuid", "amount": 45.50, "currency": "EUR", "category": "Groceries", "description": "Store name", "date": "2025-11-10T14:30:00Z", "created_at": "2025-11-10T14:35:22Z" } ⚠️ Important Notes First user locks the bot** - Run /start to claim ownership Default currency is EUR** - AI auto-detects other currencies Cleanup deletes ALL data** - Use manual trigger with caution No confirmation for adding** - Only delete operations ask for confirmation 🛠️ Customization Change default currency in agent prompts Add/modify expense categories in ExpenseAssistant Extend Root Agent with additional assistants Adjust AI models (swap GPT-4o/Sonnet as needed) 📚 Related Resources Create Telegram Bot OpenRouter Credentials Ainoflow Platform 💼 Need Customization? Want to adapt this template for your specific needs? Custom integrations, additional features, or enterprise deployment? Contact us at Ainova Systems - We build AI automation solutions for businesses. Tags: telegram, expense-tracker, ai-agent, ocr, voice-to-text, openrouter, mcp-tools, personal-finance. An n8n automation workflow template by Dmitrij Zykovic.

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