ContaAI

AI-powered Romanian accounting document OCR and audit system. Processes invoices (Facturi), receipts (Bon Fiscal), and other fiscal documents, extracting structured data and running a multi-dimensional confidence audit.

Features

• 📄 Supports PDF and image inputs
• 🤖 Multi-provider AI: Gemini, OpenAI, OpenRouter
• 🧮 6-dimension confidence scoring system
• 🇷🇴 Romanian CUI validation via ANAF API
• 📊 Export to XML (e-Factura, SAGA formats)
• ⚠️ Automatic human-review flagging for low-confidence documents

Setup

1. Python Backend (Engine)

Install dependencies and configure environment:

pip install -r requirements.txt
cp .env.example .env

Edit .env and add your API Keys (Gemini, OpenAI, or OpenRouter). If you use Vertex AI, provide the path to your google-credentials.json.

Run the server:

uvicorn main:app --reload

2. Desktop Application (Avalonia UI)

Located in the ContaDesktop/ folder.

Prerequisites

• .NET SDK 10.0+
• (Optional) Avalonia Templates: dotnet new install Avalonia.Templates

Run / Debug

cd ContaDesktop
dotnet run

Build for Production (macOS)

Use the included build script to package the .app bundle:

cd ContaDesktop
chmod +x build_app.sh
./build_app.sh

The output will be in ContaDesktop/publish/.

Development

• Backend: main.py (FastAPI), export_engine.py (logic), xml_generator.py (XML formatting).
• Desktop UI: ContaDesktop/MainWindow.axaml (UI layout) and ContaDesktop/MainWindow.axaml.cs (C# logic).

⚠️ Important

Credentials: Never commit .env or google-credentials.json. These are listed in .gitignore. Ensure you have these files locally before running the app.

API

POST /process — Upload a document for OCR and audit.

Returns structured JSON with extracted fields, confidence scores per dimension, and export-ready XML.

Confidence Scoring

Dimension	Weight	What it checks
Field Completeness	20%	All required fields present
Line Item Math	25%	qty × price ≈ line total
Global Math	20%	Sum of lines ≈ invoice totals
CUI Validation	15%	ANAF registration check
Value Plausibility	10%	Valid VAT rates (date-aware), no negatives
Cross-Reference	10%	net + VAT = gross, date logic

Documents scoring < 0.85 are flagged for human review.