# API Reference

| Module | Description |
| --- | --- |
| **WebAuthn** | |
| [Authentication](/webauthn/webauthn/Authentication) | Utility functions and types for WebAuthn authentication ceremonies (signing and verification). |
| [Authenticator](/webauthn/webauthn/Authenticator) | Utility functions for constructing and parsing authenticator data and client data JSON. |
| [Credential](/webauthn/webauthn/Credential) | Utility functions and types for WebAuthn P256 credentials. |
| [Registration](/webauthn/webauthn/Registration) | Utility functions and types for WebAuthn registration ceremonies (credential creation and verification). |