# Get sub-merchant API key

Retrieve the API key information for a sub-merchant. This is a temporary endpoint and will be deprecated in the future. Useful to create payments on behalf of your sub-merchants.

Endpoint: GET /merchants/{merchantId}/api-key
Version: 1.0.0
Security: ApiKeyAuth

## Path parameters:

  - `merchantId` (string, required)
    The unique identifier for the sub-merchant
    Example: "mrc_3bbb4fe7-4c25-45b2-a363-c8db8c0084b9"

## Response 200 fields (application/json):

  - `key` (string)
    The API key value
    Example: "hpk_test_3bbb4fe7-4c25-45b2-a363-c8db8c0084b9"


## Response 401 fields

## Response 403 fields

## Response 404 fields

## Response 500 fields