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v55

latestOpenAPI 3.1.0CC-BY-NC-SA-4.0raw.githubusercontent.com2026-08-011243791.8 MB
Customers API

Create customer

Creates a simple minimal representation of a customer. Payments, recurring mandates, and subscriptions can be linked to this customer object, which simplifies management of recurring payments.

Once registered, customers will also appear in your Mollie dashboard.

post/v2/customers

Headers

idempotency-keystring
Example:123e4567-e89b-12d3-a456-426

A unique key to ensure idempotent requests. This key should be a UUID v4 string.

Request body

resourcestring

Indicates the response contains a customer object. Will always contain the string customer for this endpoint.

idstring
mode'live' | 'test'

Whether this entity was created in live mode or in test mode.

namestring nullable

The full name of the customer.

emailstring nullable

The email address of the customer.

If the domain contains non-ASCII characters, encode it as Punycode per RFC 3492.

locale'ca_ES' | 'cs_CZ' | 'da_DK' | 'de_AT' | 'de_CH' | 'de_DE' | 'de_LU' | 'en_GB' | 'en_US' | 'es_ES' | 'fi_FI' | 'fr_BE' | 'fr_FR' | 'fr_LU' | 'hu_HU' | 'is_IS' | 'it_IT' | 'lt_LT' | 'lv_LV' | 'nb_NO' | 'nl_BE' | 'nl_NL' | 'pl_PL' | 'pt_PT' | 'sk_SK' | 'sv_SE' | 'null' nullable

Sets the language for customer-facing content and communications.

createdAtstring

The entity's date and time of creation, in ISO 8601 format.

testmodeboolean nullable

Whether to create the entity in test mode or live mode.

Most API credentials are specifically created for either live mode or test mode, in which case this parameter must not be sent. For organization-level credentials such as OAuth access tokens, you can enable test mode by setting testmode to true.

Example request

{
  "resource": "customer",
  "id": "cst_5B8cwPMGnU",
  "mode": "live",
  "name": "John Doe",
  "email": "example@email.com",
  "locale": "en_US",
  "createdAt": "2024-03-20T09:13:37+00:00",
  "_links": {
    "self": {
      "href": "https://...",
      "type": "application/hal+json"
    },
    "dashboard": {
      "href": "https://...",
      "type": "application/hal+json"
    },
    "payments": {
      "href": "https://...",
      "type": "application/hal+json"
    },
    "mandates": {
      "href": "https://...",
      "type": "application/hal+json"
    },
    "subscriptions": {
      "href": "https://...",
      "type": "application/hal+json"
    },
    "documentation": {
      "href": "https://...",
      "type": "application/hal+json"
    }
  }
}

Response

The newly created customer object.