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Summary
Lexware Office (formerly lexoffice) — Germany's most-used SMB bookkeeping app. Read and create contacts, invoices, quotations, credit notes, vouchers and articles, and pull the voucher list that drives the Buchhaltung. Public REST API v1, bearer token.
Try asking
Example prompts for Lexware Office
Click any prompt to copy it. Paste into Claude, ChatGPT, Cursor, Gemini, Copilot or OpenClaw to run it against this connector.
Claude is AI and can make mistakes. Please double-check responses.
💡 No install? Use cloud.anythingmcp.com directly. Sign in, click Connectors → Lexware Office, paste your credentials, mint an MCP API key — done. No Docker, no
git clone, no local server.
Lexware Office + Meta Muse
Lexware Office (formerly lexoffice) — Germany's most-used SMB bookkeeping app. Read and create contacts, invoices, quotations, credit notes, vouchers and articles, and pull the voucher list that drives the Buchhaltung. Public REST API v1, bearer token.
Prerequisites
See the full setup instructions baked into the connector (visible in the in-app store when you select the connector). The required environment variables for this connector are:
LEXWARE_API_KEY
Step 1 — Get credentials
Getting a token
- Sign in to Lexware Office (lexoffice) with an account on a paid plan — the API is not available on the free tier.
- Open Einstellungen → Erweiterungen → Öffentliche API and create a new access token. The token is shown once; store it immediately.
- Set
LEXWARE_API_KEYto that value. It is a personal token scoped to the one company (Mandant) it was created in; a tax adviser handling several clients needs one connector per client.
…(continued in the in-app connector instructions)
Step 2 — Install the adapter
curl -fsSL https://raw.githubusercontent.com/HelpCode-ai/anythingmcp/main/docker-compose.quickstart.yml -o docker-compose.yml
printf 'JWT_SECRET=%s\nENCRYPTION_KEY=%s\n' "$(openssl rand -hex 32)" "$(openssl rand -hex 32)" > .env
docker compose up -d
Step 3 — Add the connector in Muse
Your server URL: in AnythingMCP, open MCP Servers → the server this connector is on, and copy its URL (
https://cloud.anythingmcp.com/mcp/…). Use it wherever this guide showsYOUR_SERVER_ID.
Muse adds remote MCP servers as custom connectors and signs in to them with OAuth.
- In Muse, open Settings → Connectors and choose Add custom connector.
- Paste the MCP server URL
https://cloud.anythingmcp.com/mcp/YOUR_SERVER_ID. - Muse opens the AnythingMCP sign-in page: sign in and approve access.
- In a chat, ask Muse for something that needs the
Lexware Officetools.
You can also set it up from a chat, on the web, in the iOS and Android apps or in WhatsApp. Send Muse this message:
Create a Custom Connector for a new remote MCP server, then connect to it:
Name: AnythingMCP
Transport: remote streamable HTTP
URL: https://cloud.anythingmcp.com/mcp/YOUR_SERVER_ID
Auth: OAuth
Self-hosting? Use your instance's public HTTPS address instead of https://cloud.anythingmcp.com. Muse connects from Meta's cloud, so localhost does not work.
Available tools
| Tool | What it does |
|---|---|
lexware_office_get_profile | Read the connected company profile: company name, tax number, VAT id, the connection's user id and the small-business (Kleinunternehmer) fla |
lexware_office_list_contacts | List contacts (customers and vendors) with paging |
lexware_office_get_contact | Read one contact by its Lexware id, including all addresses, the customer/vendor roles, contact persons, e-mail addresses and phone numbers |
lexware_office_list_vouchers | Search the voucher list — the bookkeeping view across sales invoices, purchase invoices, credit notes, down payments and receipts |
lexware_office_get_invoice | Read one sales invoice in full: header, addressee, every line item with net/gross and tax rate, the total amounts, the payment terms and the |
lexware_office_get_quotation | Read one quotation (Angebot) in full, including its line items, totals, validity date and current status |
lexware_office_get_credit_note | Read one credit note (Rechnungskorrektur) in full: the invoice it corrects, its line items and its totals |
lexware_office_list_articles | List articles (Artikel) from the product catalogue, optionally narrowed by article number or type, so an invoice line can reference a real p |
lexware_office_list_countries | List the country codes Lexware Office accepts in an address, with their tax classification (intra-community, third country) |
lexware_office_create_contact | Create a new contact with the customer and/or vendor role |
lexware_office_create_invoice | Create a sales invoice |
lexware_office_get_voucher | Read one bookkeeping voucher (voucher-list voucherType salesinvoice, salescreditnote, purchaseinvoice or purchasecreditnote): contact… |
lexware_office_get_sales_document | Read one down payment invoice, order confirmation, delivery note or dunning by id |
FAQ
Where is Muse available? Meta currently offers Muse in the US and Canada, on the web, in the iOS and Android apps and in WhatsApp.
Does Meta review this connector? No. Meta doesn't review custom connectors. Muse sees only the tools you switched on for this MCP server in AnythingMCP, and you can disconnect it anytime under Settings → Connectors.
Next steps
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