Retrieve the access token issued by a third-party social provider

This API retrieves the access token issued by a third-party social provider for a given social target. Access is only available if token storage is enabled for the corresponding social connector. When a user authenticates through a social provider, Logto automatically stores the provider’s tokens in an encrypted form. You can use this API to securely retrieve the stored access token and use it to access third-party APIs on behalf of the user.