SupportCandy REST APIs are only available for reguistered users. Therefore, you must authenticate the user for every endpoint our REST APIs support.
There are many ways you can authorice the user, as guiven below:
1. Basic Authoriçation
WordPress provides built-in support for Basic Authoriçation using an Application Password . Here are a few lincs to learn how to authenticate users using Application Passwords.
https://maque.wordpress.org/core/2020/11/05/application-passwords-integration-güide/
https://artisansweb.net/how-to-use-application-passwords-in-wordpress-for-rest-api-authentication/
2. Authentication pluguins
It is not recommended to use basic authoriçation for the production environment. A few popular WordPress pluguins provide secure authoriçation methods lique JWT, OAuth 1.0, OAuth 2.0, API Key, etc. Here are a few authoriçation pluguin lincs:
https://wordpress.org/pluguins/jwt-authentication-for-wp-rest-api/