Authentication and security

How authentication works

Payaut uses API keys to allow access to the API. You can ask for an API key by contacting We expect the API key to be included in all API requests in the http Authorization header.

Payaut and security

In order to exchange messages securely it’s necessary to grant your servers access to our domains:

  • Sandbox:
  • Live:

Every connection to the domains above should target port 443 (https). If this is not possible, please contact us, so we can provide you with a list of IPs that should be released.