SYSTEM ARCHITECTURE
Pipeline that processes multi-hundred-page invoices with 500-800 line items each, extracting structured data into a database with validation.
The team was receiving massive invoices from suppliers. Sometimes 400+ pages with line items spread across hundreds of pages. A bookkeeper was manually transcribing them into the accounting system. One invoice took 6-8 hours.
Errors were frequent. The backlog was growing faster than they could process.
They needed a system that could parse the invoices, extract structured line items, validate them, and surface only the exceptions for human review.
Classifies incoming emails by sender, attachment type, subject.
Hybrid Tesseract + Claude vision for difficult layouts.
Reads multi-page PDFs and returns structured line items with confidence scores.
Cross-checks line items against catalog data, flags anomalies, routes for review.
Persists validated rows into Airtable + Supabase with full audit trail.
Exception tasks for the bookkeeper to review daily.
Summarizing extraction issues, sent to the operations lead.
n8nAirtable
SupabaseAsana
JavaScript
PythonTesseractClaude vision
ClaudeEmail parsing
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