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DashankaNadeeshanDeSilva

Kontor MCP

by DashankaNadeeshanDeSilva
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Kontor MCP

The sovereign e-invoice toolkit for AI agents. Official XRechnung / EN 16931 validation, ZUGFeRD in and out, 100% offline, zero API keys.

Kontor MCP is an open-source Model Context Protocol server and reference client that gives AI assistants (Claude Desktop, Claude Code, agent platforms) fully local capabilities for German/EU electronic invoicing: parse, validate, audit, explain, generate and convert XRechnung and ZUGFeRD/Factur-X invoices — with the official KoSIT / EN 16931 rule sets, and no data ever leaving your machine.

Status: Phase 0 (de-risk & foundation) — not yet usable. See docs/IMPLEMENTATION_PLAN.md.

Packages

Package

Purpose

@kontor-mcp/core

MCP-free library: detect, parse, validate, generate, convert

@kontor-mcp/rules

Bundled standards artifacts (XSDs, compiled Schematron, codelists) + rule knowledge base

@kontor-mcp/server

MCP server (stdio + Streamable HTTP) exposing tools, resources, prompts

@kontor-mcp/client

kontor-agent — reference MCP client CLI with an Anthropic agent loop

Related MCP server: InvoiceXML

Development

pnpm install
pnpm build
pnpm test
pnpm lint

Requires Node ≥ 20 and pnpm 10 (corepack enable picks the pinned version from packageManager).

Docs

License

Apache-2.0 — see LICENSE.

This server cannot be installed

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license - permissive license
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maintenance

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Maintenance

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Commit activity

Resources

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