Sevdesk

MCP Server for the sevDesk Accounting API. This server provides 52 tools for managing contacts, invoices, credit notes, orders, vouchers, transactions, and parts in sevDesk.

Installation

npm install -g @honeyfield/sevdesk-mcp

Or use directly with npx:

npx @honeyfield/sevdesk-mcp

Configuration

Environment Variable

Set your sevDesk API token as an environment variable:

export SEVDESK_API_TOKEN=your-api-token

Getting an API Token

1. Log in to your sevDesk account
2. Go to Settings (Einstellungen) → Users (Benutzer) → API Token
3. Generate a new token
4. Copy and store the token securely (it's only shown once)

Claude Desktop / Claude Code

Add to your MCP configuration:

{
  "mcpServers": {
    "sevdesk": {
      "command": "npx",
      "args": ["@honeyfield/sevdesk-mcp"],
      "env": {
        "SEVDESK_API_TOKEN": "your-api-token"
      }
    }
  }
}

Available Tools (52)

Contacts (8 Tools)

Tool	Description
list_contacts	List contacts with filters (customers, suppliers, partners)
get_contact	Get contact details by ID
create_contact	Create a new contact
update_contact	Update an existing contact
delete_contact	Delete a contact
get_next_customer_number	Generate the next customer number
list_contact_addresses	List addresses for a contact
create_contact_address	Create a new contact address

Invoices (12 Tools)

Tool	Description
list_invoices	List invoices with filters
get_invoice	Get invoice details by ID
create_invoice	Create a new invoice with positions
update_invoice	Update an existing invoice
delete_invoice	Delete an invoice
send_invoice_email	Send invoice via email
book_invoice_payment	Book a payment for an invoice
enshrine_invoice	Lock/finalize an invoice
reset_invoice_to_draft	Reset invoice to draft status
get_invoice_pdf	Get invoice PDF download info
export_invoice_xml	Export invoice as XRechnung XML
create_invoice_from_order	Create invoice from an order

Credit Notes (9 Tools)

Tool	Description
list_credit_notes	List credit notes with filters
get_credit_note	Get credit note details by ID
create_credit_note	Create a new credit note
update_credit_note	Update an existing credit note
delete_credit_note	Delete a credit note
send_credit_note_email	Send credit note via email
book_credit_note_payment	Book a payment for a credit note
enshrine_credit_note	Lock/finalize a credit note
create_credit_note_from_invoice	Create credit note from an invoice

Orders (6 Tools)

Tool	Description
list_orders	List orders/quotes with filters
get_order	Get order details by ID
create_order	Create a new order/quote
update_order	Update an existing order
delete_order	Delete an order
send_order_email	Send order via email

Vouchers (5 Tools)

Tool	Description
list_vouchers	List vouchers/receipts with filters
get_voucher	Get voucher details by ID
create_voucher	Create a new voucher
update_voucher	Update an existing voucher
book_voucher	Book a payment for a voucher

Transactions (5 Tools)

Tool	Description
list_check_accounts	List payment accounts
list_transactions	List transactions with filters
get_transaction	Get transaction details by ID
create_transaction	Create a new transaction
update_transaction	Update an existing transaction

Parts/Inventory (4 Tools)

Tool	Description
list_parts	List parts/articles with filters
get_part	Get part details by ID
create_part	Create a new part/article
update_part	Update an existing part

Basics (3 Tools)

Tool	Description
get_system_version	Get sevDesk system version
get_next_sequence_number	Get next document number
export_data	Export data of a specific type

Common Parameters

Status Codes

Invoices/Credit Notes:

• 100 - Draft
• 200 - Open/Delivered
• 1000 - Paid

Orders:

• 100 - Draft
• 200 - Delivered
• 300 - Accepted
• 500 - Partially invoiced
• 750 - Invoiced
• 1000 - Cancelled

Vouchers:

• 50 - Draft
• 100 - Unpaid
• 1000 - Paid

Contact Categories

• 3 - Customer (Kunde)
• 4 - Supplier (Lieferant)
• 28 - Partner

Order Types

• AN - Quote (Angebot)
• AB - Order Confirmation (Auftragsbestätigung)
• LI - Delivery Note (Lieferschein)

Country IDs

• 1 - Germany
• See sevDesk documentation for other countries

Unity IDs

• 1 - Piece (Stück)
• 2 - Hour (Stunde)
• See sevDesk documentation for other units

Examples

Create a Customer

{
  "name": "ACME GmbH",
  "categoryId": 3,
  "defaultTimeToPay": 14,
  "vatNumber": "DE123456789"
}

Create an Invoice

{
  "contactId": 12345,
  "invoiceDate": "2024-01-15",
  "positions": [
    {
      "name": "Consulting",
      "quantity": 8,
      "price": 150.00,
      "taxRate": 19,
      "unityId": 2
    }
  ],
  "header": "Invoice for January 2024",
  "timeToPay": 14
}

Create a Quote

{
  "contactId": 12345,
  "orderDate": "2024-01-10",
  "orderType": "AN",
  "positions": [
    {
      "name": "Web Development",
      "quantity": 1,
      "price": 5000.00,
      "taxRate": 19,
      "unityId": 1,
      "optional": false
    }
  ]
}

Development

# Install dependencies
npm install

# Build
npm run build

# Run in development
npm run dev

Testing with MCP Inspector

npx @anthropic-ai/mcp-inspector dist/index.js

License

MIT

Links

• sevDesk API Documentation
• sevDesk Website
• GitHub Repository