Add callback URI to application

Adds a callback URI to the specified Nylas application. Nylas uses callback URIs to redirect users to your project after they complete the authentication flow. If you don't specify a platform, Nylas defaults to web.

The OAuth protocol requires that you include the client_secret field for calls made to this endpoint, depending on the platform you define. If you're using OAuth 2.0 with PKCE and your platform is js, ios, android, or desktop, the client_secret field is not required.