ARCHIVED — discontinued and unmaintained since 24 August 2026. Final frozen release: v2.1.0.
ExceptionLineage investigates enterprise transaction exceptions by tracing relationship lineage across contracts, amendments, SOWs, approvals, and invoices to produce evidence-backed, auditable determinations.
EN 16931 e-invoice validator and generator for TypeScript. XRechnung, Peppol BIS, Factur-X, UBL and CII. Zero deps.
AI-assisted invoice validator. Upload a PDF and check line totals, tax (VAT/GST) and the grand total. Deterministic math engine, OCR, and an LLM layer that explains errors. Live at invoiceinspect.app
France e-invoice validator for Factur-X, UBL and CII invoices. Run offline technical checks against pinned France_RFE, EN 16931 and EXTENDED-CTC-FR rules. Export structured findings and optional JSON, HTML or text batch reports before submission to a platform or Chorus Pro.
Official clients for the Factlint API — validate, fix and convert e-invoices (EN 16931, UBL, CII, PDF/A-3 containers, French and German rule sets) against sealed, replayable rule sets.
Public research, benchmarks and production evidence for Einvoi e-invoice verification.
Validate EN 16931 e-invoices (UBL, CII, Factur-X PDF) in CI. Runs locally by default — no API key, no network.
Tamper-evidence toolkit (npm verifyhash / verify-vh) + a zero-dependency EN 16931 / XRechnung / Factur-X e-invoice validator. Offline, permissionless, CI-gateable.
Free, dependency-free EN 16931 / Peppol UBL e-invoice validator — browser, CLI, HTTP. Run it before you send, catch rejected-invoice errors offline.
Inbox for German supplier invoices: validates XRechnung and ZUGFeRD/Factur-X e-invoices with the official KoSIT rules (EN 16931), extracts PDF data with an LLM and shows the evidence, flags duplicates and changed bank details, four-eyes approval, CSV export. Django, Temporal, Vue 3.
Validate XRechnung 3.0.x XML and ZUGFeRD 2.5 or Factur-X 1.09 XML/PDF with pinned rules and structured findings. Batch e-invoice validation and E-Rechnung Prüfung for accounts payable automation, Steuerberater workflows, ERP and einvoice pipelines via API, n8n, Make, or MCP agents.
KSeF validator for Poland FA(3) invoice XML, also called FA3 or e-faktura. Check the pinned official schema, NIP and documented cross-field rules in batches. Get offline technical findings before submission; this tool does not send invoices to KSeF.
Validate German e-invoices (XRechnung UBL/CII, ZUGFeRD/Factur-X) against the official KoSIT rule set. Zero-dependency TypeScript client for normapi.de
EN 16931 e-invoice validation and generation for UBL and CII, with national CIUS profiles (Croatia, Fiskalizacija 2.0) and rule messages in Croatian, Bosnian and Serbian.
Offline structural and deterministic content preflight for FPA12, FPR12, and FSM10 XML with pinned derived schemas and structured findings. Italian e-invoicing preflight before SDI submission: catches technical errors that commonly cause an SDI scarto, without claiming SDI acceptance.
Public demonstration of deterministic invoice validation for ERP and finance systems.
Peppol BIS Billing validator for UBL invoice XML and EN 16931 technical checks. Run offline batch preflight with pinned XSD and Schematron profiles before access-point submission. Inspect the bundled rule versions; validation does not submit invoices or guarantee network acceptance.
Invoice-vs-brief scope validation — 9 automated checks for multi-supplier translation PM. Live demo: zooman33.github.io/scopeguard
Preflight Romanian UBL Invoice and CreditNote XML against pinned UBL 2.1, CIUS-RO 1.0.1, and ro16931-ubl 1.0.9 rules.
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