How can a API call from Gallabox can be secured?

How can a API call from Gallabox can be secured?

Yes, We can come up with an option "API HMAC Digest, Oauth connector" So that the client can validate and authenticate our API calls.

Related Articles
What is the maximum limit in Gallabox, if the WhatsApp tier limit is unlimited?
Internally we will set 5L per day as a limit for unlimited tier and similarly will restrict the client not to initiate any more broadcasts while there is an active running broadcast with huge number.