[Home](./index.md) > [@firebase/auth](./auth.md) > [SAMLAuthProvider](./auth.samlauthprovider.md) ## SAMLAuthProvider class An AuthProvider for SAML. Signature: ```typescript export declare class SAMLAuthProvider extends FederatedAuthProvider ``` Extends: FederatedAuthProvider ## Constructors | Constructor | Modifiers | Description | | --- | --- | --- | | [(constructor)(providerId)](./auth.samlauthprovider._constructor_.md) | | Constructor. The providerId must start with "saml." | ## Methods | Method | Modifiers | Description | | --- | --- | --- | | [credentialFromError(error)](./auth.samlauthprovider.credentialfromerror.md) | static | Used to extract the underlying [OAuthCredential](./auth.oauthcredential.md) from a [AuthError](./auth.autherror.md) which was thrown during a sign-in, link, or reauthenticate operation. | | [credentialFromJSON(json)](./auth.samlauthprovider.credentialfromjson.md) | static | Creates an [AuthCredential](./auth.authcredential.md) from a JSON string or a plain object. | | [credentialFromResult(userCredential)](./auth.samlauthprovider.credentialfromresult.md) | static | Generates an [AuthCredential](./auth.authcredential.md) from a [UserCredential](./auth.usercredential.md) after a successful SAML flow completes. |