Auth0

API

Adaptable, easy-to-implement authentication & authorization platform

Overview

Auth0 provides RESTful endpoints for user authentication (login, signup, MFA) and authorization (RBAC, permission checks). It supports JSON responses and integrates with social logins (Google, Facebook), OAuth2, OIDC, and SAML. Use cases include securing web/mobile apps, protecting APIs with JWT tokens, implementing multi-factor authentication, managing user identities at scale, and enabling single sign-on (SSO) across platforms while adhering to compliance standards like GDPR and HIPAA.

Example Integration (JavaScript)

script.js JS


fetch('https://auth0.com')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful API
JSON Responses
JWT Token Support
MFA Integration
Social/OAuth2 Login
RBAC & Authorization
SSO Capabilities
Compliance Ready

Frequently Asked Questions

? Is Auth0 free to use?

Yes, Auth0 offers a free tier with basic features (limited monthly active users, social logins). Paid tiers are available for advanced needs like enterprise SSO and dedicated support.

? Does it require an API Key?

Yes, integrating Auth0 requires a Client ID and Secret (API credentials) to authenticate your application and access its endpoints.

? What is the response format?

Auth0’s API responses are primarily in JSON format, including tokens (JWT), user profiles, and error messages.

Top Alternatives

Okta Search Google

Firebase Authentication Search Google

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Tool Info

Pricing Freemium

Category Authentication & Authorization

Platform Public API

Pros

⊕ Easy to integrate into apps/APIs
⊕ Supports multiple auth methods
⊕ Scalable for enterprise use
⊕ Built-in compliance features

Cons

⊖ Premium tiers can be costly for high volume
⊖ Advanced features have a learning curve
⊖ Dependency on external service
⊖ Free tier has rate limits