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🚀 I Built an AI Agent That Stops Duplicate & Fraud Invoices BEFORE You Pay!
This is my end-to-end Automated Invoice Processing & Validation Architecture — now live on n8n.
💥 THE PROBLEM:
Finance teams manually verifying 1,000s of invoices lead to:
• Duplicate payments & fraud risk
• PO-GRN discrepancies
• 10+ hours wasted every single week
🏗️ THE ARCHITECTURE BREAKDOWN 👇
Phase 1: Smart Ingestion & De-Duplication
Gmail Invoice Ingestion Trigger
Pre-Processor & MD5 Hash Engine
PostgreSQL Duplicate Hash Check
Is Duplicate Invoice? Router ├─► If Duplicate: Instant Telegram / Email Rejection Alert └─► If Unique: Cost Optimization Router
Phase 2: AI Document Intelligence & Validation
5. Gemini AI Document Analysis — Extract vendor, line-items, PO, bank
6. PostgreSQL Vendor & Bank Master Lookup
7. Real-Time Fraud & Bank Validation Check
8. Fetch ERP PO & GRN Data
9. Automated 3-Way Matching (PO vs. GRN vs. Invoice)
10. HTTP Live Forex Engine (For import invoices)
11. BOM Table Sync & Final Validation
12. Final Audit Dispatch to Finance
⚡ KEY RESULTS:
✅ Duplicate Payments: 0% (Saved €50K+ on edge cases)
✅ Fraud Detection: Real-time bank account & GST cross-verification
✅ Processing Time: Cut from 10 hrs/week → 30 seconds per invoice
✅ 3-Way Match: 100% Automated
🛠️ STACK: n8n | Google Gemini AI | PostgreSQL | JavaScript | Gmail API | ERP API
This isn't just automation — it's an AI Guard for your Accounts Payable team.
💡 Want this setup for your finance team?
Comment "INVOICE OS" below and I’ll send you the full blueprint breakdown!
#n8n #AIAutomation #InvoiceProcessing #Fintech #GeminiAI #APAutomation #FraudDetection
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