Update customer

Updates the master data of a customer. Fields not provided remain unchanged; null values clear the field.

update_customer

Authorization

Authorization string header required API key in the format ll_.... Pass as a Bearer token in the OAuth flow.

Scopes

debitoren:write

Parameters

customer_id string (uuid) required ID of the customer

name string optional Name (max 255)

vat_id string | null optional VAT ID

tax_id string | null optional Tax number

iban string | null optional IBAN

bic string | null optional BIC

default_account string | null optional Default revenue account

notes string | null optional Free-text notes

Response

200

Success

MCP update_customer

JSON

{
  "tool": "update_customer",
  "params": {
    "customer_id": "<string>",
    "name": "<string>",
    "default_account": "<string>"
  }
}

200 Response

JSON

{
  "id": "<string>",
  "name": "<string>",
  "default_account": "<string>"
}