MessageBird’s Contacts API helps you manage contacts that are identified by a unique random ID. Using this ID, you can create, view, update, or delete contacts. This API works as a collection of customer-specific contacts that allows you to group them and assign custom values that you can later use when sending SMS template messages.
The Contacts API uses HTTP verbs and a RESTful endpoint structure with an access key that is used as the API Authorization. Request and response payloads are formatted as JSON using UTF-8 encoding and URL encoded values.