Lexware OfficeSAFE

An MCP server for Lexware Office (formerly Lexoffice). It lets MCP-capable assistants query and manage contacts, sales documents, vouchers, files, payments, webhooks, and reference data through the Lexware Office public API.

The server uses Code Mode: instead of one MCP tool per API endpoint, it exposes two tools — search to explore a curated Lexware API catalog and execute to run constrained, sandboxed API workflows. This keeps the tool surface small while covering the whole API, including pagination, aggregation, and multi-step reporting in a single call.

Upgrading from 1.x? The legacy tool-per-endpoint server was removed in 2.0.0. See docs/guide.md#migrating-from-1x.

Features

• Broad Lexware Office API coverage for read and write workflows
• Sales documents: invoices, quotations, order confirmations, credit notes, delivery notes, dunning notices, and down-payment invoices
• Contact management: create, read, and update customers and vendors
• Bookkeeping: vouchers, posting categories, payments, and file uploads
• Reference data: profile, countries, print layouts, payment conditions, recurring templates
• Webhooks: create, list, inspect, and delete event subscriptions
• Read-only by default: writes require explicit opt-in via environment variable

How it works

The server exposes two MCP tools:

• search — runs a sandboxed JavaScript async arrow function against a curated OpenAPI-lite Lexware catalog.
• execute — runs a sandboxed JavaScript async arrow function with one host capability, lexware.request, for relative /v1/... Lexware API calls.

Example execute call:

async () => {
const response = await lexware.request({
method: 'GET',
path: '/v1/contacts',
query: { name: 'Muster', page: 0, size: 10 }
});

return response.data;
}

The sandbox does not receive the Lexware AP