# Partner Authentication Partner authentication is mandatory for requesting any partner endpoints. A partner's authentication is different from the company/dispatcher authentication. This is performed by a partner API key. To call any partner API, the partner API key must be included in the header of the request as a value to the custom header **"PARTNER-API-KEY"**. ## HTTPcURL ```http PARTNER-API-KEY: ``` ```curl curl ... -H 'PARTNER-API-KEY: ' ... ``` Typically, a partner API key is a 64 characters long string.