Does the google-chat-api service have a free tier for organizations?
In the tutorials it is mentioned that we have to create a cloud account and enable billing, which I was led to believe is not a necessity. In other docs its mentioned we just require a service account with no mention of billing. Therefore I am unclear as to whether this api is suitable for my purpose and constraints.
I shall be using it sparsely and in low volume, and only for in-house needs.