Invoice Check
Engineer Agent

Audits MRO invoices against contract terms, approved price lists and quotations — flags overcharges, duplicate billing and out-of-scope items automatically.

// WHAT IT DOES

Automated MRO Invoice Auditing

The Invoice Check Engineer audits MRO invoices line by line — comparing each charge against approved labor rates, part markups, maintenance man-hour records and the original quotation. It flags every discrepancy with evidence and calculates the total overcharge value.

Extracts all line items from PDF invoices using pdfplumber
Validates labor rates against approved rate cards per trade and shift
Checks part markups against contract terms and approved price lists
Cross-references quoted scope — flags out-of-scope charges
Detects duplicate billing across line items and previous invoices
Validates TAT and man-hour charges against maintenance records
Checks warranty applicability — items potentially covered by existing warranty
Generates HTML audit report with finding summary and total dispute value

// HOW IT WORKS

7-Step Audit Pipeline

Invoice Extraction

Parses the MRO invoice PDF using pdfplumber. Extracts all line items: part numbers, descriptions, quantities, unit prices, labor hours and rates. Handles multi-page invoices and different MRO invoice formats.

Multi-Check Validation

Runs 6 parallel checks: man-hour validation against maintenance history, price check against approved rates, quotation match against contracted scope, warranty check against database, and duplicate detection against recent invoices.

Audit Report

Generates a structured HTML audit report: executive summary, total findings value, per-item findings with severity rating, evidence references, and recommended dispute actions. Ready for engineer review and MRO discussion.

// DOCUMENT TYPES

Accepted Inputs

MRO Invoice (PDF) Approved Price List (CSV) Maintenance Quotation (JSON/PDF) Man-Hour History (CSV) Warranty Database Contract Rate Cards

// EXAMPLE OUTPUT

Sample Audit Finding

audit_report.html — Invoice Check Engineer

AUDIT SUMMARY — INV-2026-001234
MRO:      Lufthansa Technik AG
Aircraft: D-ETEST (Cessna 172S)
Invoice:  EUR 2,377.00

FINDINGS (3 issues, EUR 728.70 disputed)

[FAIL] Line 4 — Duplicate billing detected
        Avionics inspection already billed INV-2026-000891
        Disputed: EUR 245.00

[FAIL] Line 7 — Price overcharge
        Part P/N 0470623 billed EUR 189.00, approved EUR 142.50
        Disputed: EUR 46.50

[WARN] Line 11 — Potential warranty coverage
        Part within 24-month warranty window
        Disputed: EUR 437.20

// TRY THE DEMO

Upload Your Invoice — Get Instant Audit

Upload an MRO invoice PDF and we’ll run the 7-step audit pipeline live. Results appear on this page within seconds.

Auditing your invoice...

Extracting invoice line items

Running 7-step audit checks

Generating findings report

Invoice Audit Results

// DEMO LIMIT REACHED

You have reached the demo limit for this agent.

Contact [email protected] for full access.

Invoice CheckEngineer Agent