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Invoice processing

Skill BuilderCed/agent-skills/skills/documents/invoice-processing

31 cross-platform AI agent skills for regulated industries & underserved markets. EU compliance (AI Act, NIS2, DORA, GDPR), French professional (accounting, tax, notary, real estate), security audit, agent evaluation, Africa mobile money, offline-first.

Install

npx -y skills add BuilderCed/agent-skills --skill invoice-processing

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What its author says it does

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Extract, validate, and classify invoices from PDF, Factur-X, and UBL formats. Multi-country support with field mapping and anomaly detection.

The file declares its own license as MIT. That is the author’s claim about this one file, and it is not the same thing as the license GitHub reports for the repository, which is listed with the other numbers below.

SKILL.md

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Invoice Processing

When to Use

Extracting data from PDF invoices
Validating Factur-X or UBL structured invoices
Classifying invoices by type, vendor, or account
Detecting anomalies (duplicates, unusual amounts, missing fields)
Mapping invoice fields to accounting entries

Extraction Pipeline

1. INPUT: PDF / Factur-X / UBL / image
2. DETECT FORMAT: structured XML embedded? → parse directly
   No XML? → OCR + field extraction
3. EXTRACT FIELDS: map to canonical schema
4. VALIDATE: required fields, amounts, VAT consistency
5. CLASSIFY: expense category, accounting account, vendor
6. OUTPUT: structured JSON + confidence scores

Canonical Invoice Schema

{
  "invoice_number": "FA-2026-042",
  "invoice_date": "2026-04-15",
  "due_date": "2026-05-15",
  "supplier": {
    "name": "Fournisseur SAS",
    "tax_id": "FR12345678901",
    "address": "12 rue Example, 75001 Paris"
  },
  "buyer": {
    "name": "Client SARL",
    "tax_id": "FR98765432109"
  },
  "lines": [
    {
      "description": "Prestation conseil",
      "quantity": 5,
      "unit_price": 200.00,
      "vat_rate": 20.0,
      "line_total": 1000.00
    }
  ],
  "subtotal": 1000.00,
  "vat_amount": 200.00,
  "total": 1200.00,
  "currency": "EUR",
  "payment_terms": "30 jours net"
}

Validation Rules

Rule	Check	Severity
Required fields	invoice_number, date, supplier, total	Critical
Math consistency	sum(lines) = subtotal, subtotal + VAT = total	Critical
VAT rate validity	Rate matches country standard rates	Warning
Duplicate detection	Same number + supplier + amount	Critical
Date logic	due_date >= invoice_date	Warning
Currency	Valid ISO 4217 code	Warning

Anomaly Detection

Anomaly	Signal	Action
Duplicate invoice	Same number + supplier + amount +/- 5%	Block, flag for review
Round amount	Total is exact round number (1000, 5000)	Flag (common in fraud)
Weekend/holiday date	Invoice dated on non-business day	Flag
Unusual amount	> 3 standard deviations from vendor average	Flag for review
Missing VAT	Taxable transaction with 0% VAT	Flag, check exemption

What This Skill Does NOT Do

Does not perform OCR (uses existing OCR output or structured XML)
Does not approve or pay invoices (validation and extraction only)
Does not connect to ERP systems (outputs structured data)
Does not handle tax compliance (see fr-comptabilite)

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