The MMS API v2 uses API keys to authenticate requests. API Key is assigned to a specific gym location only and has granular permissions. You can contact our team to request it. (API Key can be requested for test location).
Please make sure to keep them secure!
Authentication to the MMS API v2 is performed via the custom request header x-api-key. You need just provide API Key as a value. We force to use HTTPS only. Calls made over plain HTTP will fail.