# Request verify MFA using WebAuthN

Verify a multi-factor authentication (MFA) challenge using a registered WebAuthn device.

This endpoint completes WebAuthn-based MFA verification, typically following primary authentication when WebAuthn is required as a second factor.

Path parameters:
- deviceId: The unique identifier of the WebAuthn device to be verified.

Request body must include:
- mfaToken: Token issued during the login or step-up authentication flow.

Use this endpoint to validate a WebAuthn device and complete the MFA step during authentication.

Endpoint: POST /resources/auth/v1/user/mfa/webauthn/{deviceId}
Security: bearer

## Path parameters:

  - `deviceId` (string, required)

## Request fields (application/json):

  - `mfaToken` (string, required)