Authorization with the Belco API is done using personal access tokens. You can find your personal access token on your profile page in the Belco dashboard.

https://app.belco.io/profile

Use your personal access token simply by providing your access token in the headers of your request.

$ curl \
-s https://api.belco.io/v1/conversations \
-H 'Authorization:Bearer <access_token>' \
-H 'Accept:application/json'