Last updated 07-02-2026
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Auth0
Auth0 is a customer identity and access management platform from Okta. It handles authentication and authorization for web, mobile, and API applications so development teams can add login, SSO, and access controls without building identity infrastructure from scratch.
The platform covers B2C consumer apps, B2B SaaS products, and internal tools. Developers integrate via SDKs and quickstarts for stacks like React, Next.js, iOS, Android, Java, .NET, and Python. Auth0 also ships dedicated tooling for securing AI agents, including user authentication before agent access, Token Vault for scoped API credentials, and fine-grained authorization for RAG pipelines.
Auth0 reports blocking 3 billion-plus attacks monthly across Okta and Auth0 platforms, 99.99% uptime, and 10 billion-plus authentications per month. Customers listed on the site include Siemens, Signify, Zapier, Wyndham Hotels, and the City of Los Angeles.
Universal Login and Embedded Login flows with branding controls for web and mobile apps
Single sign-on across enterprise federation, social logins, and username-password setups
Multifactor authentication with adaptive MFA that triggers only on risky login attempts
Passwordless authentication and breached password detection to reduce credential risk
Token Vault for AI agents to request short-lived tokens instead of storing third-party API keys
Fine-grained authorization APIs for access control in B2B SaaS and RAG document retrieval
Machine-to-machine authentication for APIs, background jobs, and IoT device communication
Actions and Forms extensibility to customize signup, login, and identity workflows without new backend code
30-plus SDKs and quickstarts to integrate Auth0 into common languages and frameworks in minutes
Free tier supports up to 25,000 monthly active users with no credit card required.
Broad SDK and quickstart coverage for major web, mobile, and backend frameworks.
Dedicated AI agent security features including Token Vault and RAG authorization controls.
Essentials and Professional pricing scales with monthly active users, so costs rise quickly at scale.
Enterprise features such as private cloud and premier support require sales conversations and custom contracts.
Is Auth0 free to use?
Yes. Auth0 offers a Free plan at $0 per month with up to 25,000 monthly active users and no credit card required to sign up. Paid Essentials, Professional, and Enterprise tiers add higher limits and advanced features.
How long is the Auth0 trial?
Auth0 provides a 22-day trial period. After the trial ends, the Free plan activates automatically unless you choose a paid plan.
What programming languages does Auth0 support?
Auth0 provides SDKs and quickstarts for JavaScript, React, Angular, Next.js, Node.js, iOS, Android, Java, .NET, Python, PHP, Vue, and Spring, among others.
Does Auth0 support securing AI agents?
Yes. Auth0 for AI Agents covers user authentication before agent use, Token Vault for scoped third-party API access, fine-grained authorization for RAG pipelines, and human-in-the-loop approval for high-risk agent actions.
Who owns Auth0?
Auth0 is part of Okta. The Auth0 site footer and legal pages identify Okta, Inc. as the operating company behind the Auth0 platform.