Kontor MCP server

Read from the package source without running it. The installed server may list more.

• audit_invoice

  One-call audit for accounts payable: parse + validate (XSD, official EN 16931 / XRechnung rules, Kontor plausibility: totals recomputed, VAT rates, IBAN, Leitweg-ID check digits, dates, duplicates) and return header facts, VAT breakdown, verdict, grouped findings with fix hints and an accept / review / reject recommendation with rationale. Fully offline.

• check_obligations

  Offline decision tree over the German e-invoicing mandate (§ 14 / § 27 Abs. 38 UStG, UStDV §§ 33/34/34a, E-RechV): what applies to an issuer or receiver (B2B / B2G / B2C), from when, transition rules (2026, 2027 with the €800,000 prior-year turnover threshold, 2028), exemptions (small business, small-amount invoices, exempt supplies, cross-border), accepted formats and whether a Leitweg-ID is need

• convert_invoice

  Convert an invoice: extract the XML from a ZUGFeRD/Factur-X PDF, convert UBL ↔ CII via the EN 16931 semantic model (post-validated, with an honest loss report of anything that did not survive), or render a self-contained HTML preview to show the invoice to a human. Optional `output_path` writes the artifact (no overwrite unless `overwrite=true`). Fully offline.

• explain_rule

  Explain an EN 16931 / XRechnung rule id (e.g. BR-DE-15): official text, plain-language explanation (DE/EN), affected business terms, fix hint. Unknown ids get nearest-match suggestions.

• generate_invoicewrite action

  Create a compliant e-invoice from structured data: XRechnung 3.0 (UBL 2.1, default) or a ZUGFeRD 2.3 / Factur-X PDF/A-3 with embedded factur-x.xml (`target: zugferd-pdf`, profiles EN16931 / BASIC / EXTENDED). Amounts, VAT breakdown and totals are derived decimal-safe; the result is validated internally — for PDFs the XML is read back out of the generated file first (fail-honest: `valid` reports th

• list_capabilities

  Introspect this server: supported formats and profiles, bundled standard versions (XRechnung, EN 16931, KoSIT configuration, XSDs), rule knowledge-base stats, code lists, legal parameters' last-verified date, tools/resources/prompts and the sovereignty statement (offline, no persistence).

• parse_invoice

  Detect the format (UBL/CII, EN 16931, XRechnung version, ZUGFeRD/Factur-X profile) of an XML or ZUGFeRD PDF invoice and return its EN 16931 semantic model (BT-annotated). Fully offline.

• validate_invoice

  Validate an XML or ZUGFeRD PDF invoice against XML Schema and the official EN 16931 / XRechnung Schematron rules (KoSIT-equivalent verdict) plus Kontor plausibility checks, with plain-language explanations and fix hints. Fully offline.

• Code scan39 source files scanned25/25
• –Live reliabilityno gateway calls yet and no remote to proben/a
• –Tool poisoningtools not inspected (local package is not executed); not countedn/a
• Auth qualitystatic API keys via environment variables6/15
• Maintenancelast push 25 days ago15/15
• Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

Kontor MCP: common questions

Is Kontor MCP server safe?

Mostly: it is graded B (83/100). Read the Kontor MCP safety report

How do I install Kontor MCP?

It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.

Does Kontor MCP need an API key?

Yes. The registry entry asks for KONTOR_AUTH_TOKEN.

Is Kontor MCP maintained?

The last commit was 25 days ago (2026-08-27). The latest release is v1.0.4.

What can I use instead of Kontor MCP?

Servers from other publishers that do the same job: Invoice Intake (reference) MCP server, Recurring Invoice Scheduler Subscription Billing Due Reminders MCP server and E Arveldaja MCP server. Compare all Kontor MCP alternatives.