| FirebaseCredential | Provides Google OAuth2 access tokens used to authenticate with Firebase services. |
| UserInfo | A collection of standard profile information for a user. |
| FirebaseAuth | This class is the entry point for all server-side Firebase Authentication actions. |
| FirebaseCredentials | Standard FirebaseCredential implementations for use with FirebaseOptions. |
| FirebaseToken | Implementation of a Parsed Firebase Token returned by verifyIdToken(String). |
| GoogleOAuthAccessToken | Represents an OAuth access token, which can be used to access Firebase and other qualified Google APIs. |
| UserMetadata | Contains additional metadata associated with a user account. |
| UserRecord | Contains metadata associated with a Firebase user account. |
| UserRecord.CreateRequest | A specification class for creating new user accounts. |
| UserRecord.UpdateRequest | A class for updating the attributes of an existing user. |
| FirebaseAuthException | Generic exception related to Firebase Authentication. |