lexware-mcp-server

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.

Installation

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

Or run directly:

npx @lazyants/lexware-mcp-server

Configuration

Set your Lexware Office API token:

export LEXWARE_API_TOKEN=your-token-here

Get a token from the Lexware Office API settings.

Entry Points

Command	Domains	Tools
lexware-mcp-server	All 20 domains	65
lexware-mcp-sales	Invoices, Credit Notes, Quotations, Order Confirmations, Delivery Notes, Down Payment Invoices, Dunnings, Voucherlist	35
lexware-mcp-contacts	Contacts, Articles	10
lexware-mcp-bookkeeping	Vouchers, Voucherlist, Payments	7
lexware-mcp-reference	Countries, Payment Conditions, Posting Categories, Profile, Print Layouts	5
lexware-mcp-system	Event Subscriptions, Files, Recurring Templates	9

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

Claude Code

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" }
    }
  }
}

Claude Desktop

Add to claude_desktop_config.json:

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

Tools

Invoices (6 tools) — sales

lexware_create_invoice, lexware_get_invoice, lexware_download_invoice_file, lexware_finalize_invoice, lexware_pursue_invoice, lexware_deeplink_invoice

Credit Notes (5 tools) — sales

lexware_create_credit_note, lexware_get_credit_note, lexware_download_credit_note_file, lexware_pursue_credit_note, lexware_deeplink_credit_note

Quotations (5 tools) — sales

lexware_create_quotation, lexware_get_quotation, lexware_download_quotation_file, lexware_pursue_quotation, lexware_deeplink_quotation

Order Confirmations (5 tools) — sales

lexware_create_order_confirmation, lexware_get_order_confirmation, lexware_download_order_confirmation_file, lexware_pursue_order_confirmation, lexware_deeplink_order_confirmation

Delivery Notes (5 tools) — sales

lexware_create_delivery_note, lexware_get_delivery_note, lexware_download_delivery_note_file, lexware_pursue_delivery_note, lexware_deeplink_delivery_note

Down Payment Invoices (3 tools) — sales

lexware_get_down_payment_invoice, lexware_download_down_payment_invoice_file, lexware_deeplink_down_payment_invoice

Dunnings (5 tools) — sales

lexware_create_dunning, lexware_get_dunning, lexware_download_dunning_file, lexware_pursue_dunning, lexware_deeplink_dunning

Voucherlist (1 tool) — sales, bookkeeping

lexware_list_voucherlist

Contacts (5 tools) — contacts

lexware_list_contacts, lexware_get_contact, lexware_create_contact, lexware_update_contact, lexware_deeplink_contact

Articles (5 tools) — contacts

lexware_list_articles, lexware_get_article, lexware_create_article, lexware_update_article, lexware_delete_article

Vouchers (5 tools) — bookkeeping

lexware_list_vouchers, lexware_get_voucher, lexware_create_voucher, lexware_update_voucher, lexware_upload_voucher_file

Payments (1 tool) — bookkeeping

lexware_get_payments

Countries (1 tool) — reference

lexware_list_countries

Payment Conditions (1 tool) — reference

lexware_list_payment_conditions

Posting Categories (1 tool) — reference

lexware_list_posting_categories

Profile (1 tool) — reference

lexware_get_profile

Print Layouts (1 tool) — reference

lexware_list_print_layouts

Event Subscriptions (4 tools) — system

lexware_create_event_subscription, lexware_list_event_subscriptions, lexware_get_event_subscription, lexware_delete_event_subscription

Files (3 tools) — system

lexware_upload_file, lexware_download_file, lexware_get_file_status

Recurring Templates (2 tools) — system

lexware_list_recurring_templates, lexware_get_recurring_template

Security

• 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)

Disclaimer

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.

License

MIT — see LICENSE for details.