MCP server for the Lexware Office API. Manage invoices, contacts, articles, vouchers, and more through the Model Context Protocol.

65 tools across 20 resource domains, with 6 entry points so you can pick the right server for your MCP client's tool limit.

npm install -g @lazyants/lexware-mcp-server

Or run directly:

npx @lazyants/lexware-mcp-server

Set your Lexware Office API token:

export LEXWARE_API_TOKEN=your-token-here

Get a token from the Lexware Office API settings.

Use split servers to reduce context size — pick only the splits you need.

Add to ~/.claude/settings.json:

{
  "mcpServers": {
    "lexware": {
      "command": "npx",
      "args": ["-y", "@lazyants/lexware-mcp-server"],
      "env": {
        "LEXWARE_API_TOKEN": "your-token-here"
      }
    }
  }
}

Or use split servers (pick the splits you need):

{
  "mcpServers": {
    "lexware-sales": {
      "command": "npx",
      "args": ["-y", "-p", "@lazyants/lexware-mcp-server", "lexware-mcp-sales"],
      "env": { "LEXWARE_API_TOKEN": "your-token-here" }
    },
    "lexware-contacts": {
      "command": "npx",
      "args": ["-y", "-p", "@lazyants/lexware-mcp-server", "lexware-mcp-contacts"],
      "env": { "LEXWARE_API_TOKEN": "your-token-here" }
    }
  }
}

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "lexware": {
      "command": "npx",
      "args": ["-y", "@lazyants/lexware-mcp-server"],
      "env": {
        "LEXWARE_API_TOKEN": "your-token-here"
      }
    }
  }
}

lexware_create_invoice, lexware_get_invoice, lexware_download_invoice_file, lexware_finalize_invoice, lexware_pursue_invoice, lexware_deeplink_invoice

lexware_create_credit_note, lexware_get_credit_note, lexware_download_credit_note_file, lexware_pursue_credit_note, lexware_deeplink_credit_note

lexware_create_quotation, lexware_get_quotation, lexware_download_quotation_file, lexware_pursue_quotation, lexware_deeplink_quotation

lexware_create_order_confirmation, lexware_get_order_confirmation, lexware_download_order_confirmation_file, lexware_pursue_order_confirmation, lexware_deeplink_order_confirmation

lexware_create_delivery_note, lexware_get_delivery_note, lexware_download_delivery_note_file, lexware_pursue_delivery_note, lexware_deeplink_delivery_note

lexware_get_down_payment_invoice, lexware_download_down_payment_invoice_file, lexware_deeplink_down_payment_invoice

lexware_create_dunning, lexware_get_dunning, lexware_download_dunning_file, lexware_pursue_dunning, lexware_deeplink_dunning

lexware_list_voucherlist

lexware_list_contacts, lexware_get_contact, lexware_create_contact, lexware_update_contact, lexware_deeplink_contact

lexware_list_articles, lexware_get_article, lexware_create_article, lexware_update_article, lexware_delete_article

lexware_list_vouchers, lexware_get_voucher, lexware_create_voucher, lexware_update_voucher, lexware_upload_voucher_file

lexware_get_payments

lexware_list_countries

lexware_list_payment_conditions

lexware_list_posting_categories

lexware_get_profile

lexware_list_print_layouts

lexware_create_event_subscription, lexware_list_event_subscriptions, lexware_get_event_subscription, lexware_delete_event_subscription

lexware_upload_file, lexware_download_file, lexware_get_file_status

lexware_list_recurring_templates, lexware_get_recurring_template

• Never commit your API token to version control
• Use read-only access when you only need to list/get resources
• Create, update, and delete tools modify real business data — invoices, contacts, and accounting records in your Lexware account
• Rate limiting is handled automatically (exponential backoff on 429)

Not affiliated with Lexware or Haufe Group. Create, update, and delete operations modify real business data in your Lexware account. The authors are not responsible for any unintended changes.

MIT — see LICENSE for details.