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Auth0 API

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description Auth0 API Overview

Auth0 provides a powerful, developer-friendly platform for managing user identity and Single Sign-On (SSO). Its API abstracts away the immense complexity of modern authentication protocols (like OAuth 2.0 and OIDC). Developers can integrate secure login flows across any application stack without needing deep security expertise.

help Auth0 API FAQ

Is Auth0 free to use for small projects?

Auth0 offers a free tier designed for developers and small applications, though with limits on monthly active users and available features. For production applications that exceed those limits or require enterprise features like SAML integration, paid plans are necessary.

Does Auth0 support OAuth 2.0 and OpenID Connect out of the box?

Yes, Auth0 is built on top of OAuth 2.0 and OpenID Connect (OIDC) protocols, handling token issuance, refresh, and validation automatically. Developers can configure authorization flows, scopes, and API protections through the Auth0 dashboard without writing protocol-level code.

Who owns Auth0 after the Okta acquisition?

Auth0 was acquired by Okta in a deal completed in 2021, making it a wholly-owned subsidiary. Auth0 continues to operate as a distinct product brand within Okta's identity and access management portfolio, with its own developer-focused platform and documentation.

Can Auth0 integrate with Microsoft Active Directory for enterprise SSO?

Yes, Auth0 supports enterprise SSO integration with Microsoft Active Directory through LDAP, SAML, and AD FS connectors. This allows organizations to authenticate users against their existing AD infrastructure while using Auth0 as the application-facing identity layer.

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