# Authsignal

## Docs

- [Getting started with actions](https://docs.authsignal.com/actions-rules/actions/getting-started.md): Learn how Authsignal actions enable risk-based authentication and how to implement them in your app.
- [Implementing MFA](https://docs.authsignal.com/actions-rules/actions/implementing-mfa.md): Learn how to implement MFA and step-up authentication across your application using Authsignal actions.
- [Passwordless login](https://docs.authsignal.com/actions-rules/actions/passwordless-login.md): Learn how to implement passwordless authentication flows using Authsignal actions.
- [Restricting authenticators for an action](https://docs.authsignal.com/actions-rules/actions/restricting-authenticators.md): Learn how to restrict which authenticators a user can select to complete challenges.
- [Adaptive MFA](https://docs.authsignal.com/actions-rules/rules/adaptive-mfa.md): Learn how to use rules to create adaptive, risk-based authentication that challenges users only when necessary.
- [Customizing rules with custom data points](https://docs.authsignal.com/actions-rules/rules/custom-data-points.md): Learn how to create custom data points and integrate them into Authsignal rules to create intelligent, policy-driven authentication flows that respond to your unique security requirements
- [Custom lists](https://docs.authsignal.com/actions-rules/rules/custom-lists.md): Create lists of information to use in rules.
- [Getting started with rules](https://docs.authsignal.com/actions-rules/rules/getting-started.md): Learn how Authsignal rules enable risk-based authentication and how to implement them in your app.
- [Testing rules](https://docs.authsignal.com/actions-rules/rules/testing-rules.md): Learn how to test your rules with Authsignal's test action feature.
- [Authenticator binding](https://docs.authsignal.com/advanced-usage/authenticator-binding.md): Ensure a strong binding between authenticators when using the pre-built UI or Client SDKs.
- [Custom API domains](https://docs.authsignal.com/advanced-usage/custom-api-domains.md): Learn how to use your own custom domain with Authsignal's Client API and SDKs
- [Programmatically managing authenticators on behalf of users](https://docs.authsignal.com/advanced-usage/programmatic-authenticator-management.md): Learn how to automatically enroll and un-enroll users' authentication methods.
- [Session management](https://docs.authsignal.com/advanced-usage/session-management.md): Learn how to use Authsignal SDKs to issue, validate, refresh and revoke access tokens.
- [Using Terraform](https://docs.authsignal.com/advanced-usage/using-terraform.md): Learn how to use Authsignal's Terraform provider to keep your rule configuration synced across tenants.
- [Events schema](https://docs.authsignal.com/advanced-usage/webhooks/events-schema.md): Events schema reference documentation.
- [Using Authsignal's webhooks](https://docs.authsignal.com/advanced-usage/webhooks/using-webhooks.md): Learn how to use webhooks to send SMS, email and push notifications via your own provider, receive post-verification action updates, and receive authenticator notifications near real-time.
- [Finish Call Connect Session](https://docs.authsignal.com/api-reference/call-connect-api/finish-call-connect.md): Finish an existing Call Connect authentication session.
- [Call Connect API - Overview](https://docs.authsignal.com/api-reference/call-connect-api/overview.md): Learn how to integrate with the Authsignal Call Connect API - an Authsignal service for call center customer authentication.
- [Start Call Connect Session](https://docs.authsignal.com/api-reference/call-connect-api/start-call-connect.md): Start a Call Connect authentication session, triggering a user verification challenge based on the configured channels.
- [Finalize Email Magic Link Challenge](https://docs.authsignal.com/api-reference/client-api/finalize-email-magic-link-challenge.md): The email magic link challenge is verified when the user clicks on the link sent to their email. Use this endpoint to finalize the challenge, checking if the user has clicked on the magic link (e.g. via polling).
- [Generate Passkey Authentication Options](https://docs.authsignal.com/api-reference/client-api/generate-passkey-authentication-options.md): Generate options to authenticate with an existing passkey.
- [Generate Passkey Registration Options](https://docs.authsignal.com/api-reference/client-api/generate-passkey-registration-options.md): Generate options to register a new passkey.
- [Get Authenticator Configurations](https://docs.authsignal.com/api-reference/client-api/get-authenticator-configurations.md): Get a list of the authenticators configured for the tenant.
- [Get Authenticators](https://docs.authsignal.com/api-reference/client-api/get-authenticators.md): Get a list of the user's enrolled authenticators.
- [Initiate Challenge](https://docs.authsignal.com/api-reference/client-api/initiate-challenge.md): Initiate a challenge for an action. Call this before Generate Authentication Options to customize the action code for passkey sign-in.
- [iProov API - Overview](https://docs.authsignal.com/api-reference/client-api/iproov-overview.md)
- [Client API - Overview](https://docs.authsignal.com/api-reference/client-api/overview.md): Learn how to use the Authsignal Client API to build custom authentication flows.
- [Overview](https://docs.authsignal.com/api-reference/client-api/passkey-overview.md)
- [Push API - Overview](https://docs.authsignal.com/api-reference/client-api/push-overview.md)
- [Overview](https://docs.authsignal.com/api-reference/client-api/qr-code-overview.md)
- [WebSocket](https://docs.authsignal.com/api-reference/client-api/qr-code-websocket.md): Real-time QR code challenge management via WebSocket connections
- [Start Authenticator App Enrollment](https://docs.authsignal.com/api-reference/client-api/start-authenticator-app-enrollment.md): Enroll a new authenticator app authenticator for a user
- [Start Email Magic Link Challenge](https://docs.authsignal.com/api-reference/client-api/start-email-magic-link-challenge.md): Start a challenge when the user is already enrolled with at least one email magic link authenticator
- [Start Email Magic Link Enrollment](https://docs.authsignal.com/api-reference/client-api/start-email-magic-link-enrollment.md): Start a challenge to enroll a new email magic link authenticator for a given email.
- [Start Email OTP Challenge](https://docs.authsignal.com/api-reference/client-api/start-email-otp-challenge.md): Start a challenge when the user is already enrolled with at least one email OTP authenticator
- [Start Email OTP Enrollment](https://docs.authsignal.com/api-reference/client-api/start-email-otp-enrollment.md): Start a challenge to enroll a new email OTP authenticator for a given email.
- [Start iProov Challenge](https://docs.authsignal.com/api-reference/client-api/start-iproov-challenge.md): Start an iProov challenge.
- [Start Push Challenge](https://docs.authsignal.com/api-reference/client-api/start-push-challenge.md): Start a push challenge by sending a notification to the user's mobile device.
- [Start QR Code Challenge](https://docs.authsignal.com/api-reference/client-api/start-qr-code-challenge.md): Start an anonymous QR code challenge to be completed by a user's mobile device. This is called an anonymous challenge because it is not associated with a user.
- [Start SMS Challenge](https://docs.authsignal.com/api-reference/client-api/start-sms-challenge.md): Start a challenge when the user is already enrolled with at least one SMS authenticator.
- [Start SMS Enrollment](https://docs.authsignal.com/api-reference/client-api/start-sms-enrollment.md): Start a challenge to enroll a new SMS authenticator for a given phone number.
- [Start WhatsApp Challenge](https://docs.authsignal.com/api-reference/client-api/start-whatsapp-challenge.md): Start a challenge by sending a WhatsApp message containing an OTP code.
- [Verify Authenticator App Challenge](https://docs.authsignal.com/api-reference/client-api/verify-authenticator-app-challenge.md): Verify a challenge when enrolling a authenticator app authenticator or when re-authenticating with an existing authenticator app authenticator
- [Verify Email OTP Challenge](https://docs.authsignal.com/api-reference/client-api/verify-email-otp-challenge.md): Verify a challenge when enrolling a new email OTP authenticator or when re-authenticating with an existing email OTP authenticator
- [Verify iProov Challenge](https://docs.authsignal.com/api-reference/client-api/verify-iproov-challenge.md): Verify a completed iProov challenge. Call this end-point after the iProov Client SDK has completed a verification flow.
- [Verify Passkey Authentication](https://docs.authsignal.com/api-reference/client-api/verify-passkey-authentication.md): Finish the process of authenticating with an existing passkey authenticator.
- [Verify Passkey Registration](https://docs.authsignal.com/api-reference/client-api/verify-passkey-registration.md): Finish the process of registering a new passkey authenticator.
- [Verify Push Challenge](https://docs.authsignal.com/api-reference/client-api/verify-push-challenge.md): Verify a challenge to a user's mobile device. Use this endpoint from the app which initiated the challenge to determine if the user approved or rejected the request (e.g. via polling).
- [Verify QR Code Challenge](https://docs.authsignal.com/api-reference/client-api/verify-qr-code-challenge.md): Verify a QR code challenge. Use this endpoint from the app which initiated the challenge to determine if the user approved or rejected the request (e.g. via polling).
- [Verify SMS Challenge](https://docs.authsignal.com/api-reference/client-api/verify-sms-challenge.md): Verify a challenge when enrolling a new SMS authenticator or when re-authenticating with an existing SMS authenticator.
- [Verify WhatsApp Challenge](https://docs.authsignal.com/api-reference/client-api/verify-whatsapp-challenge.md): Verify a challenge when re-authenticating with a WhatsApp OTP authenticator.
- [Create Action Configuration](https://docs.authsignal.com/api-reference/management-api/create-action-configurations.md): Creates an action configuration from an action code.
- [Create Custom Data Point](https://docs.authsignal.com/api-reference/management-api/create-custom-data-points.md): Creates a custom data point.
- [Create Custom List](https://docs.authsignal.com/api-reference/management-api/create-custom-lists.md): Creates a custom list of values.
- [Create Rule](https://docs.authsignal.com/api-reference/management-api/create-rules.md): Creates a rule for an action configuration.
- [Delete Action Configuration](https://docs.authsignal.com/api-reference/management-api/delete-action-configurations.md): Deletes an action configuration by action code.
- [Delete Custom Data Point](https://docs.authsignal.com/api-reference/management-api/delete-custom-data-points.md): Deletes an custom list by its alias.
- [Delete Custom List](https://docs.authsignal.com/api-reference/management-api/delete-custom-lists.md): Deletes an custom list by its alias.
- [Delete Rule](https://docs.authsignal.com/api-reference/management-api/delete-rules.md): Deletes a rule by action code and rule id.
- [Get Action Configuration](https://docs.authsignal.com/api-reference/management-api/get-action-configurations.md): Retrieves an action configuration by action code.
- [Get Authenticator Configurations](https://docs.authsignal.com/api-reference/management-api/get-authenticator-configurations.md): Retrieves a list of the authenticator configurations for the tenant.
- [Get Custom Data Point](https://docs.authsignal.com/api-reference/management-api/get-custom-data-points.md): Retrieves a custom data point by its ID.
- [Get Custom List](https://docs.authsignal.com/api-reference/management-api/get-custom-lists.md): Retrieves a custom list by its alias.
- [Get Rule](https://docs.authsignal.com/api-reference/management-api/get-rules.md): Gets a rule by action code and rule ID.
- [Get Tenant](https://docs.authsignal.com/api-reference/management-api/get-tenant.md): Retrieves tenant information.
- [Get Theme](https://docs.authsignal.com/api-reference/management-api/get-theme.md): Retrieves a tenant's pre-built UI theme.
- [Management API - Overview](https://docs.authsignal.com/api-reference/management-api/overview.md): Configure Authsignal tenants, actions, and rules using the management API.
- [Update Action Configuration](https://docs.authsignal.com/api-reference/management-api/update-action-configurations.md): Updates an action configuration by action code.
- [Update Authenticator Configuration](https://docs.authsignal.com/api-reference/management-api/update-authenticator-configuration.md): Updates an authenticator configuration by authenticator ID.
- [Update Custom List](https://docs.authsignal.com/api-reference/management-api/update-custom-lists.md): Updates an custom list by its alias.
- [Update Rule](https://docs.authsignal.com/api-reference/management-api/update-rules.md): Updates a rule by action code and rule ID.
- [Update Tenant](https://docs.authsignal.com/api-reference/management-api/update-tenant.md): Updates tenant information.
- [Update Theme](https://docs.authsignal.com/api-reference/management-api/update-theme.md): Updates a tenant's pre-built UI theme.
- [Authsignal APIs](https://docs.authsignal.com/api-reference/overview.md): Get started with Authsignal APIs
- [Batch Enroll Verified Authenticators](https://docs.authsignal.com/api-reference/server-api/batch-enroll-verified-authenticators.md): Enroll multiple authenticators across multiple users in a single request. This endpoint is idempotent — re-enrolling the same credential for the same user is a no-op. Each item is processed independently; failures do not affect other items in the batch.
- [Claim Challenge](https://docs.authsignal.com/api-reference/server-api/claim-challenge.md): Claim an SMS or email-based challenge on behalf of a user, associating it with an ID for a user record in your system.
- [Create Session](https://docs.authsignal.com/api-reference/server-api/create-session.md): Create a session for a user based on a client token obtained after successfully completing a challenge. This will return an access token and refresh token which can be used to manage a session.
- [Delete Authenticator](https://docs.authsignal.com/api-reference/server-api/delete-authenticator.md): Delete a user's enrolled authenticator.
- [Delete User](https://docs.authsignal.com/api-reference/server-api/delete-user.md): Permanently deletes a user and all their associated data, including all of their authenticators and actions. This operation is asynchronous and may take a few minutes to complete after the request returns.
- [Enroll Verified Authenticator](https://docs.authsignal.com/api-reference/server-api/enroll-verified-authenticator.md): Enroll an authenticator on behalf of a user. This operation should only be used in cases where you have already verified a user's email address or phone number in your own system.
- [Get Action](https://docs.authsignal.com/api-reference/server-api/get-action.md): Get detailed information on a tracked action.
- [Get Authenticator Configurations](https://docs.authsignal.com/api-reference/server-api/get-authenticator-configurations.md): Gets a list of the authenticators configured for the tenant.
- [Get Authenticators](https://docs.authsignal.com/api-reference/server-api/get-authenticators.md): Gets a list of the user's currently enrolled authenticators.
- [Get Challenge](https://docs.authsignal.com/api-reference/server-api/get-challenge.md): Get information about a challenge.
- [Get Devices](https://docs.authsignal.com/api-reference/server-api/get-devices.md): Get a list of devices associated with a user.
- [Get User](https://docs.authsignal.com/api-reference/server-api/get-user.md): Retrieve information about a user.
- [Initiate Challenge](https://docs.authsignal.com/api-reference/server-api/initiate-challenge.md): Initiate a challenge by sending a verification code to an  email address or phone number.
- [Invalidate Device](https://docs.authsignal.com/api-reference/server-api/invalidate-device.md): Invalidate a user's device, treating it as if it were a new device on subsequent actions.
- [Server API - Overview](https://docs.authsignal.com/api-reference/server-api/overview.md): Learn how to integrate with Authsignal's server-side REST API for tracking events performed by users and initiating authentication challenges.
- [Query Actions](https://docs.authsignal.com/api-reference/server-api/query-actions.md): Query actions for a user.
- [Query Users](https://docs.authsignal.com/api-reference/server-api/query-users.md): Query users by a set of filters.
- [Refresh Session](https://docs.authsignal.com/api-reference/server-api/refresh-session.md): Refresh a session for a given refresh token. This will return a new access token and refresh token, revoking any previously issued tokens.
- [Revoke Session](https://docs.authsignal.com/api-reference/server-api/revoke-session.md): Revoke a session for a given access token.
- [Revoke User Sessions](https://docs.authsignal.com/api-reference/server-api/revoke-user-sessions.md): Revoke all sessions for a given user.
- [Track Action](https://docs.authsignal.com/api-reference/server-api/track-action.md): Record authentication events performed by users and initiate challenges via Authsignal's pre-built UI or Authsignal Client SDKs.
- [Update Action](https://docs.authsignal.com/api-reference/server-api/update-action.md): Update an action.
- [Update User](https://docs.authsignal.com/api-reference/server-api/update-user.md): Update information about a user. Any fields which are omitted in the request will be left unchanged.
- [Validate Action](https://docs.authsignal.com/api-reference/server-api/validate-action.md): Validate the result of an action using a token obtained after redirecting back from the pre-built UI or returned by an Authsignal SDK.
- [Validate Session](https://docs.authsignal.com/api-reference/server-api/validate-session.md): Validate a session for a given access token. This will ensure both that the token signature is valid and that the token has not been revoked.
- [Verify Challenge](https://docs.authsignal.com/api-reference/server-api/verify-challenge.md): Verify an SMS or email-based challenge by submitting a verification code.
- [Create Payment Session](https://docs.authsignal.com/api-reference/terminal-api/create-payment-session.md): Initialization of a payment session will trigger a payment authorization user experience on the paired Authsignal payment terminal application.
- [Get Payment Session](https://docs.authsignal.com/api-reference/terminal-api/get-payment-session.md): Poll for a payment session result using the `challengeId` obtained from creating a payment session.
- [Terminal API - Overview](https://docs.authsignal.com/api-reference/terminal-api/overview.md): How to integrate and interact with the Authsignal Biometric Terminal service
- [Attestation](https://docs.authsignal.com/authentication-methods/app-verification/attestation.md): Verify that app credentials are enrolled from legitimate apps running on real devices.
- [Enrollment lifecycle](https://docs.authsignal.com/authentication-methods/app-verification/enrollment-lifecycle.md): Enroll and un-enroll users for app verification as part of your mobile app's authentication lifecycle.
- [In-app verification](https://docs.authsignal.com/authentication-methods/app-verification/in-app.md): Verify high-risk actions in mobile apps using cryptographic device credentials.
- [Push verification](https://docs.authsignal.com/authentication-methods/app-verification/push.md): Verify users by adding a secure "push" authentication method to your mobile apps.
- [QR code verification](https://docs.authsignal.com/authentication-methods/app-verification/qr-code.md): Enable cross-device authentication by scanning QR codes with mobile apps.
- [Biometric auth](https://docs.authsignal.com/authentication-methods/biometrics.md): Verify user identity using advanced biometric verification providers
- [Email magic link](https://docs.authsignal.com/authentication-methods/email/magic-link.md): Send magic links via email for authentication and for verifying users' email addresses.
- [Email OTP](https://docs.authsignal.com/authentication-methods/email/otp.md): Send one-time verification codes via email for authentication and for verifying users' email addresses.
- [OIDC Providers - Redirect Flow](https://docs.authsignal.com/authentication-methods/oidc-providers/redirect-flow.md): Authenticate users by redirecting them to an external provider such as Google, Apple, or any OAuth 2.0 / OIDC-compliant provider.
- [Passkeys best practice for native mobile apps](https://docs.authsignal.com/authentication-methods/passkey/best-practices-mobile.md): Design seamless passkey flows for iOS and Android native applications
- [Passkeys best practice for the web](https://docs.authsignal.com/authentication-methods/passkey/best-practices-web.md): Optimize passkey user experience and conversion rates for web applications
- [Passkeys using Mobile SDKs](https://docs.authsignal.com/authentication-methods/passkey/mobile-sdks.md): Implement passkeys in native mobile apps using Authsignal Mobile SDKs for Swift, Kotlin, React Native, and Flutter
- [Passkeys using Authsignal's pre-built UI](https://docs.authsignal.com/authentication-methods/passkey/prebuilt-ui.md): Rapidly implement passkeys with Authsignal's pre-built UI.
- [Passkeys using the Web SDK](https://docs.authsignal.com/authentication-methods/passkey/web-sdk.md): Implement passkeys in a web browser using the Authsignal Web SDK
- [SMS OTP](https://docs.authsignal.com/authentication-methods/sms-otp.md): Send one-time verification codes via SMS for authentication and for verifying users' phone numbers.
- [Authenticator app (TOTP)](https://docs.authsignal.com/authentication-methods/totp.md): Use time-based codes from Google Authenticator and other TOTP apps.
- [WhatsApp OTP](https://docs.authsignal.com/authentication-methods/whatsapp-otp.md): Send one-time verification codes via WhatsApp for authentication and for verifying users' phone numbers.
- [Product updates](https://docs.authsignal.com/changelog/product-updates.md): New features, updates, and changes to Authsignal.
- [Welcome to Authsignal Docs](https://docs.authsignal.com/getting-started/overview.md): All the guides and resources you need to get started with Authsignal.
- [Set up your Authsignal account](https://docs.authsignal.com/getting-started/set-up-authsignal.md): Before you can add Authsignal to your app, you'll need to create an Authsignal account. This guide will walk you through it.
- [Mobile SDKs](https://docs.authsignal.com/implementation-options/mobile-sdks/overview.md): Implement authentication flows in native mobile apps using Swift, Kotlin, React Native or Flutter.
- [Contextual messaging](https://docs.authsignal.com/implementation-options/prebuilt-ui/contextual-messaging.md): Add custom messaging to the pre-built UI to give your users more context.
- [Custom branding](https://docs.authsignal.com/implementation-options/prebuilt-ui/custom-branding.md): Customize the look and feel of the pre-built UI to match your app's brand.
- [Custom domains](https://docs.authsignal.com/implementation-options/prebuilt-ui/custom-domains.md): Use your own custom domain with Authsignal's pre-built UI.
- [Enrolling authenticators](https://docs.authsignal.com/implementation-options/prebuilt-ui/enrolling-authenticators.md): Learn how your users can enroll new authenticators using Authsignal's pre-built UI.
- [Localization](https://docs.authsignal.com/implementation-options/prebuilt-ui/localization.md): Configure the language and locale of the pre-built UI for your users.
- [Opt-in consent checkbox](https://docs.authsignal.com/implementation-options/prebuilt-ui/opt-in-consent.md): Require users to check a consent checkbox before receiving an SMS during enrollment.
- [Pre-built UI](https://docs.authsignal.com/implementation-options/prebuilt-ui/overview.md): Rapidly implement web-based authentication flows using Authsignal's pre-built UI.
- [Passkey uplift prompt](https://docs.authsignal.com/implementation-options/prebuilt-ui/passkey-uplift-prompt.md): Accelerate passkey adoption by prompting users to create passkeys.
- [Presentation modes](https://docs.authsignal.com/implementation-options/prebuilt-ui/presentation-modes.md): Learn about the Authsignal pre-built UI's different presentation modes.
- [Removing authenticators](https://docs.authsignal.com/implementation-options/prebuilt-ui/removing-authenticators.md): Let users remove their authenticators via Authsignal's pre-built UI
- [Web SDK](https://docs.authsignal.com/implementation-options/web-sdk/overview.md): Implement authentication flows in web browsers while maintaining full control over your own UI.
- [Using Authsignal with Asgardeo](https://docs.authsignal.com/integrations/asgardeo.md): Learn how to add MFA to your Asgardeo login flow with Authsignal.
- [Using Authsignal with Auth0](https://docs.authsignal.com/integrations/auth0.md): Learn how to integrate Authsignal with Auth0 to add MFA to your login flow, using methods such as Authenticator App, SMS OTP, Email OTP, and Passkeys.
- [Using an internal user ID](https://docs.authsignal.com/integrations/auth0-internal-user-id.md): Learn how to use your internal user ID when integrating Authsignal with Auth0 instead of the default Auth0 user ID.
- [Auth0 Native Bridge](https://docs.authsignal.com/integrations/auth0-native-bridge.md): Learn how to use issue an Auth0 access token during authsignal flows like passkey auto-fill
- [Adding adaptive MFA to Auth0](https://docs.authsignal.com/integrations/auth0-refine-mfa.md): Learn how to add adaptive MFA to your Auth0 login flow using Authsignal.
- [Managing authenticators when integrating Authsignal with Amazon Cognito](https://docs.authsignal.com/integrations/aws-cognito/authenticators.md): Learn how to let users enroll and manage different authenticators when integrating Authsignal with Amazon Cognito.
- [Uber app example](https://docs.authsignal.com/integrations/aws-cognito/example-app.md): Learn how to implement a sign-in UX inspired by the Uber app using SMS and email OTP, passkeys, and social login with Apple or Google.
- [Integrating Authsignal with Amazon Cognito](https://docs.authsignal.com/integrations/aws-cognito/getting-started.md): Learn how to integrate Authsignal with Amazon Cognito to rapidly implement passwordless authentication.
- [Using passkeys when integrating Authsignal with Amazon Cognito](https://docs.authsignal.com/integrations/aws-cognito/passkeys.md): Learn how to use passkeys when integrating Authsignal with Amazon Cognito.
- [Adding adaptive MFA to your Cognito login flow](https://docs.authsignal.com/integrations/aws-cognito/rules.md): Learn how to add adaptive MFA to your Cognito login flow using Authsignal.
- [Using Authsignal for MFA with Microsoft Azure AD B2C](https://docs.authsignal.com/integrations/azure-ad-b2c/azure-ad-b2c-mfa.md): Learn how to integrate Authsignal for MFA when using Microsoft Azure AD B2C.
- [Using Passkeys with Microsoft Azure AD B2C](https://docs.authsignal.com/integrations/azure-ad-b2c/azure-ad-b2c-passkey.md): Learn how to add passkey autofill to your Microsoft Azure AD B2C login page with Authsignal.
- [Passwordless login with Microsoft Azure AD B2C](https://docs.authsignal.com/integrations/azure-ad-b2c/azure-ad-b2c-passwordless.md): Learn how to use Authsignal for passwordless login with Microsoft Azure AD B2C.
- [Microsoft Azure AD B2C Custom Policy Snippets](https://docs.authsignal.com/integrations/azure-ad-b2c/azure-ad-b2c-snippets.md): Use Authsignal custom policy snippets to customize Microsoft Azure AD B2C flows.
- [Adding MFA to Duende IdentityServer](https://docs.authsignal.com/integrations/identityserver/getting-started.md): Learn how to add MFA to Duende IdentityServer using Authsignal.
- [Adding passkeys to Duende IdentityServer](https://docs.authsignal.com/integrations/identityserver/passkeys.md): Learn how to add passkeys to Duende IdentityServer using Authsignal.
- [Adding MFA to your Keycloak login flow](https://docs.authsignal.com/integrations/keycloak/getting-started.md): Learn how to add MFA to your Keycloak login flow with Authsignal.
- [Federated Login with MFA](https://docs.authsignal.com/integrations/keycloak/keycloak-federated-sign-in.md): Learn how to set up federated login with SSO and Authsignal in Keycloak.
- [Using Keycloak groups and roles in authentication rules](https://docs.authsignal.com/integrations/keycloak/keycloak-groups-roles.md): Learn how to use Keycloak groups and roles in Authsignal authentication rules.
- [Adding passkey autofill to your Keycloak login flow](https://docs.authsignal.com/integrations/keycloak/keycloak-passkey-autofill.md): Learn how to add passkey autofill to your Keycloak login flow with Authsignal.
- [Adding passkey MFA to your Keycloak login flow](https://docs.authsignal.com/integrations/keycloak/keycloak-passkey-signup-with-prebuilt-UI.md): Learn how to add passkey MFA to your Keycloak login flow with Authsignal.
- [NextAuth.js (now known as Auth.js)](https://docs.authsignal.com/integrations/nextauth-js.md): Learn how to integrate Authsignal with your Next.js app when using NextAuth.
- [Ruby on Rails](https://docs.authsignal.com/integrations/ruby-on-rails.md): Learn how to use Authsignal with Ruby on Rails to implement Multi-factor Authentication and Passkeys
- [ServiceNow](https://docs.authsignal.com/integrations/service-now.md): Learn how to integrate Authsignal with ServiceNow Call Connect.
- [Resetting a user's authenticators](https://docs.authsignal.com/knowledge-base/administration/resetting-user-authenticators.md): Learn how a customer support agent can use the Authsignal Portal to reset a user's multi-factor authenticators.
- [SSO (Single Sign-On)](https://docs.authsignal.com/knowledge-base/administration/single-sign-on.md): Learn how to configure SAML 2.0 single sign-on for your Authsignal admin portal.
- [Viewing user activity](https://docs.authsignal.com/knowledge-base/administration/view-user-activity.md): Learn how a customer support agent can use the Authsignal Portal to understand user activity
- [FAQs](https://docs.authsignal.com/knowledge-base/faqs.md): Frequently asked questions.
- [API testing using Postman](https://docs.authsignal.com/knowledge-base/testing/postman.md): Learn how to test Authsignal APIs using Postman.
- [Call Connect SDK](https://docs.authsignal.com/sdks/call-connect/overview.md): Use Authsignal's Call Connect SDK for Node.js.
- [Actions](https://docs.authsignal.com/sdks/client/mobile/actions.md): Initiate actions using a Server SDK before using Mobile SDK methods for email OTP, SMS OTP, WhatsApp OTP, or authenticator app.
- [Email OTP](https://docs.authsignal.com/sdks/client/mobile/email-otp.md): Implement email OTP in your mobile apps using the Authsignal SDKs for iOS, Android, React Native, and Flutter.
- [Error handling](https://docs.authsignal.com/sdks/client/mobile/error-handling.md): Handle errors using the Authsignal SDKs for iOS, Android, React Native, and Flutter.
- [In-app verification](https://docs.authsignal.com/sdks/client/mobile/in-app-verification.md): Implement in-app verification using the Authsignal SDKs for iOS, Android, React Native, and Flutter.
- [Passkeys](https://docs.authsignal.com/sdks/client/mobile/passkeys.md): Implement passkeys in your mobile apps using the Authsignal SDKs for iOS, Android, React Native, and Flutter.
- [Push verification](https://docs.authsignal.com/sdks/client/mobile/push-verification.md): Implement app verification with push notifications using the Authsignal SDKs for iOS, Android, React Native, and Flutter.
- [QR code verification](https://docs.authsignal.com/sdks/client/mobile/qr-code-verification.md): Implement app verification with QR codes using the Authsignal SDKs for iOS, Android, React Native, and Flutter.
- [Mobile SDKs](https://docs.authsignal.com/sdks/client/mobile/setup.md): Learn how to use the Authsignal SDKs for iOS, Android, React Native, and Flutter.
- [SMS OTP](https://docs.authsignal.com/sdks/client/mobile/sms.md): Implement SMS OTP in your mobile apps using the Authsignal SDKs for iOS, Android, React Native, and Flutter.
- [Authenticator app (TOTP)](https://docs.authsignal.com/sdks/client/mobile/totp.md): Implement authenticator app verification in your mobile apps using the Authsignal SDKs for iOS, Android, React Native, and Flutter.
- [WhatsApp OTP](https://docs.authsignal.com/sdks/client/mobile/whatsapp.md): Implement WhatsApp OTP in your mobile apps using the Authsignal SDKs for iOS, Android, React Native, and Flutter.
- [React](https://docs.authsignal.com/sdks/client/react.md): Learn how to use the Authsignal React SDK.
- [Actions](https://docs.authsignal.com/sdks/client/web/actions.md): Initiate actions using a Server SDK before using Web SDK methods for email OTP, SMS OTP, WhatsApp OTP, or authenticator app.
- [Device tracking](https://docs.authsignal.com/sdks/client/web/device-tracking.md): Use the Web SDK to remember users' devices and create rules for adaptive MFA.
- [Email magic link](https://docs.authsignal.com/sdks/client/web/email-magic-link.md): Use the Web SDK to implement email magic link authentication.
- [Email OTP](https://docs.authsignal.com/sdks/client/web/email-otp.md): Use the Web SDK to implement email OTP authentication.
- [Error handling](https://docs.authsignal.com/sdks/client/web/error-handling.md): How to handle errors using the Authsignal Web SDK.
- [Passkeys](https://docs.authsignal.com/sdks/client/web/passkeys.md): Use the Web SDK to implement passkeys.
- [Launching the pre-built UI](https://docs.authsignal.com/sdks/client/web/prebuilt-ui.md): Use the Authsignal Web SDK to launch the pre-built UI.
- [Push verification](https://docs.authsignal.com/sdks/client/web/push-verification.md): Use the Web SDK to initiate push verification challenges.
- [QR code verification](https://docs.authsignal.com/sdks/client/web/qr-code-verification.md): Use the Web SDK to generate QR code challenges which can be scanned and authenticated using a mobile app.
- [Web SDK](https://docs.authsignal.com/sdks/client/web/setup.md): Learn how to use the Authsignal Web SDK.
- [SMS OTP](https://docs.authsignal.com/sdks/client/web/sms.md): Use the Web SDK to implement SMS authentication.
- [Authenticator app (TOTP)](https://docs.authsignal.com/sdks/client/web/totp.md): Use the Web SDK to implement authenticator app (TOTP) authentication.
- [WhatsApp OTP](https://docs.authsignal.com/sdks/client/web/whatsapp.md): Use the Web SDK to implement WhatsApp authentication.
- [Server SDKs - Actions](https://docs.authsignal.com/sdks/server/actions.md): Use Authsignal's server-side SDK methods for actions.
- [Server SDKs - Authenticators](https://docs.authsignal.com/sdks/server/authenticators.md): Use Authsignal's server-side SDK methods for authenticators.
- [Server SDKs - Challenges](https://docs.authsignal.com/sdks/server/challenges.md): Use Authsignal's server-side SDK methods for challenges.
- [Server SDKs - Error handling](https://docs.authsignal.com/sdks/server/error-handling.md): Learn how to handle errors when using Authsignal's server SDKs.
- [Server SDKs](https://docs.authsignal.com/sdks/server/overview.md): Use Authsignal's server-side SDKs for Node.js, C#, Java, Ruby, Python, PHP, and Go.
- [Server SDKs - Sessions](https://docs.authsignal.com/sdks/server/sessions.md): Use Authsignal's server-side SDK methods for sessions.
- [Server SDKs - Users](https://docs.authsignal.com/sdks/server/users.md): Use Authsignal's server-side SDK methods for users.
- [Server SDKs - Webhooks](https://docs.authsignal.com/sdks/server/webhooks.md): Use Authsignal's server SDKs to verify webhook requests.
- [User actions](https://docs.authsignal.com/users/user-actions.md): Learn how to track, query, and manage user actions in Authsignal
- [User management](https://docs.authsignal.com/users/user-management.md): Learn how to manage user accounts, attributes, and data in Authsignal using Server SDK

## OpenAPI Specs

- [server-api](https://docs.authsignal.com/server-api.json)
- [management-api](https://docs.authsignal.com/management-api.json)
- [call-connect-api](https://docs.authsignal.com/call-connect-api.json)
- [terminal-api](https://docs.authsignal.com/terminal-api.json)
- [client-api](https://docs.authsignal.com/client-api.json)
- [package](https://docs.authsignal.com/package.json)

## AsyncAPI Specs

- [challenge-websocket](https://docs.authsignal.com/challenge-websocket.json)