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Auth0 Review

Auth0 is an identity management platform that enables secure authentication and authorization for applications, users, and AI agents.

shipped Apr 2, 2026aifreemium
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Auth0 - AI tool for auth0. Professional illustration showing core functionality and features.

Why it matters

1Auth0 for AI Agents became generally available in November 2025, winning the 'Most Innovative AI-Infrastructure Security Solution, 2026' award.
2The Authentication API generally supports 100 requests per second (RPS) for production tenants, with Public Performance Burst modifiers allowing up to 400 RPS for 48 hours monthly.
3The Free plan includes 25,000 Monthly Active Users (MAUs) and 1,000 Machine-to-Machine (M2M) tokens per month, with the MAU limit increased in September 2024.
4Auth0 B2B plans were upgraded in February 2026 to include free self-service Single Sign-On (SSO) and System for Cross-domain Identity Management (SCIM).

Stork’s verdict on Auth0

Auth0 provides flexible identity management for apps and AI agents, but its freemium model gates critical enterprise features.

Specs

API Docs

View Documentation →

GitHub

View Repository →

API Available

Yes, public API

overview

What is Auth0?

Auth0 is an identity management platform tool developed by Auth0 (company) that enables developers and organizations to implement secure authentication and authorization for applications, users, and AI agents. It provides a flexible, drop-in solution to add secure login, identity management, and access control to applications without building these systems from scratch. Auth0, now part of Okta's Customer Identity Cloud, acts as an intermediary between applications and identity providers, handling authentication, issuing tokens, enforcing security policies, and managing user identities. The platform supports various client types including web applications, mobile applications, APIs, single-page applications (SPAs), and machine-to-machine communication.

features

Key Features of Auth0

Auth0 provides a comprehensive suite of features designed to streamline identity management and enhance security across various application types and user bases. These capabilities are built upon a robust infrastructure that supports modern authentication standards and compliance requirements.

  • User Authentication and Authorization: Supports login with identifiers (username, email, phone number) and passwords, social accounts (e.g., Google, Facebook, Apple, GitHub, Microsoft), and custom user profiles.
  • API Security: Secures APIs using the OAuth 2.0 framework, ensuring controlled access and data protection.
  • Single Sign-On (SSO): Enables users to authenticate once and gain access to multiple applications without repeated logins, suitable for SaaS platforms and enterprise environments.
  • Multi-Factor Authentication (MFA): Offers various MFA methods including Time-based One-Time Passwords (TOTP), SMS/email verification, push notifications, and biometrics to strengthen security.
  • Passwordless Authentication: Provides methods such as magic links via email, one-time codes via SMS, and biometric authentication to improve user experience and mitigate password-related risks.
  • Enterprise Directory Federation: Allows integration with existing enterprise directory services (e.g., Active Directory, LDAP, SAML-based providers) for employee login using established credentials.
  • User Management: Includes tools for password resets, user creation, provisioning, blocking, deletion, and management of user interfaces.
  • Compliance: Assists organizations in meeting regulatory requirements such as SOC2, GDPR, PCI DSS, and HIPAA through secure identity practices.
  • Monitoring and Analytics: Delivers detailed logs of authentication events (logins, failures, password changes) and metrics on user activity for auditing and operational insights.
  • Auth0 for AI Agents: Provides authentication and authorization infrastructure specifically designed for AI agents, with Cross App Access for AI agents slated for general availability in 2026.

use cases

Who Should Use Auth0?

Auth0 is designed for a broad range of users and organizations seeking to implement secure, scalable, and compliant identity management solutions without the overhead of building and maintaining such systems in-house. Its flexibility supports various application architectures and business needs.

  • Developers building web, mobile, or API-driven applications who require secure and flexible identity management without extensive custom development.
  • Organizations needing to implement Single Sign-On (SSO) across multiple applications for both human users and machine-to-machine communication.
  • Enterprises requiring robust Multi-Factor Authentication (MFA), enterprise directory federation, and adherence to compliance standards (e.g., GDPR, HIPAA) for their identity solutions.
  • Companies integrating AI agents into their workflows, requiring secure authentication and authorization for non-human identities and automated processes.
  • SaaS platforms and enterprise dashboards seeking simplified user management, access control, and a customizable login experience for their customer base.

pricing

Auth0 Pricing & Plans

Auth0 operates on a freemium model with various paid tiers based primarily on Monthly Active Users (MAUs) and Machine-to-Machine (M2M) tokens. Pricing adjustments occurred in late 2023 and September 2024, reflecting changes in MAU limits and overage costs. Auth0 APIs are subject to rate limiting, which varies by API, tenant type, and subscription level, utilizing a token bucket algorithm.

  • Free plan: Includes 25,000 Monthly Active Users (MAUs) and 1,000 M2M tokens per month. The MAU limit was increased from 7,500 in September 2024.
  • Essentials plan (B2C): A paid tier that includes 1,000 M2M tokens per month. In late 2023, the overage cost per MAU increased from $0.023 to $0.07, and the base plan was adjusted to 500 MAUs for $35/month.
  • Professional plan (B2C): A paid tier that includes 5,000 M2M tokens per month, with options for expansion via add-ons.
  • Enterprise plans: Paid plans that include 'Enterprise Rate Limits' for APIs. As of February 2026, these plans received upgrades including free self-service SSO and SCIM. Tokens issued for Auth0's own APIs (Management API, Authentication API) do not count towards the M2M token quota.

Policies

Free Tier

Vendor website advertises a free tier.

Pricing Page

View Pricing→

Similar Tools

Auth0 vs Competitors

Auth0 operates within a competitive landscape of identity and access management (IAM) solutions, each offering distinct approaches to authentication and authorization for human users and AI agents.

1
Okta for AI AgentsOn StorkCompare

Okta for AI Agents focuses on bringing every AI agent into an identity security fabric for comprehensive visibility, management, and governance at enterprise scale.

Okta for AI Agents provides a dedicated framework for securing non-human identities, offering automated discovery, lifecycle management, and governance, which is a more explicit and enterprise-focused approach to AI agent identity compared to Auth0's broader platform.

2
SuperTokens↗

SuperTokens offers an open-source, developer-first authentication solution with a specific MCP Toolkit to integrate authentication directly into LLM tools and manage auth via natural language.

Unlike Auth0's broader CIAM focus, SuperTokens emphasizes self-hosting, open-source flexibility, and direct integration of authentication workflows within AI models, providing developers with granular control over their auth stack for AI applications.

3
Keycloak↗

Keycloak is a popular open-source identity and access management solution that can be self-hosted and is increasingly integrated with AI agents, particularly through the Model Context Protocol (MCP).

Keycloak offers a highly customizable, open-source alternative to Auth0, providing full control over the identity infrastructure for both human users and AI agents, which requires more operational investment but avoids vendor lock-in.

4
Stytch↗

Stytch provides API-driven authentication and authorization with explicit support for AI agent identity management, focusing on secure, flexible integration with existing auth stacks.

Stytch offers a developer-centric, API-first approach to identity, including AI agents, with features like passwordless authentication and enterprise SSO, similar to Auth0 but with a strong emphasis on modern, flexible integration and AI agent identity as a core offering.

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