> ## Documentation Index
> Fetch the complete documentation index at: https://docs.boundlesspay.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Set default card

> Set a default card for a customer.



## OpenAPI

````yaml PATCH /gateway/subscription-payments/cards/default
openapi: 3.1.0
info:
  title: BoundlessPay API
  version: 1.0.0
servers: []
security: []
paths:
  /gateway/subscription-payments/cards/default:
    patch:
      description: Set a default card for a customer.
      requestBody:
        required: true
        content:
          application/json:
            example:
              customerReference: ''
              cardId: ''
      responses:
        '200':
          description: Card set successfully

````