List all contacts from sevdesk. Supports filtering by various parameters.

Get a specific contact by ID from sevdesk

Create a new contact in sevdesk

Update an existing contact in sevdesk

Delete a contact from sevdesk

List all invoices from sevdesk. Supports filtering and pagination.

Get a specific invoice by ID from sevdesk

Get the PDF of an invoice as base64 encoded string

Send an invoice via email

Mark an invoice as sent

Book an invoice (mark it as paid)

Cancel an invoice (creates a cancellation invoice)

List all vouchers (receipts/expenses) from sevdesk

Get a specific voucher by ID from sevdesk

Book a voucher (mark it as paid)

Get all positions (line items) of a voucher

Upload a file (receipt image/PDF) for a voucher

List all check accounts (bank accounts) from sevdesk

Get a specific check account by ID

Get the current balance of a check account

List all transactions of a check account

Get a specific transaction by ID

Create a new transaction in a check account

List all parts (products/services) from sevdesk inventory

Get a specific part by ID

Create a new part (product/service) in sevdesk

Update an existing part in sevdesk

Get the current stock of a part

List all tags from sevdesk

Get a specific tag by ID

Create a new tag and attach it to a document (Invoice, Voucher, Order, or CreditNote)

Update an existing tag's name

Delete a tag from sevdesk

List all tag relations (shows which documents have which tags)