HTTP API setup in the intercom
Unsecured access
Unsecured access will not require any authentication. To set it up, go to Services -> HTTP API -> Services and set the Unsecured connection type and no authentication for the System API, as you can see on the following picture:
Secured access
Secured access is recommended as it requires authentication as you will see below. To set it up, choose Secure (TLS) connection type and set Digest for authentication. After that, set the account that will be granted access to HTTP API. Click on Account 1 (you can use any other account) and enable the account, set the username, password and enable control of the System access: