[Home](./index.md) > [@firebase/auth](./auth.md) > [AuthSettings](./auth.authsettings.md) ## AuthSettings interface Interface representing an Auth instance's settings. Signature: ```typescript export interface AuthSettings ``` ## Remarks Currently used for enabling/disabling app verification for phone Auth testing. ## Properties | Property | Type | Description | | --- | --- | --- | | [appVerificationDisabledForTesting](./auth.authsettings.appverificationdisabledfortesting.md) | boolean | When set, this property disables app verification for the purpose of testing phone authentication. For this property to take effect, it needs to be set before rendering a reCAPTCHA app verifier. When this is disabled, a mock reCAPTCHA is rendered instead. This is useful for manual testing during development or for automated integration tests.In order to use this feature, you will need to [whitelist your phone number](https://firebase.google.com/docs/auth/web/phone-auth#test-with-whitelisted-phone-numbers) via the Firebase Console.The default value is false (app verification is enabled). |