Authentication & IAM
OAuth2 providers, 2FA/MFA protocols, and cryptography utilities
Authentication & IAM API Comparison Overview
Top EndpointsAvailable Endpoints (7)
Auth0
Universal identity provider: OAuth 2.0, SSO, multi-factor auth, and user directories
Stytch
Passwordless authentication APIs: magic links, passkeys, WebAuthn, and SMS OTP
Warrant
Fine-grained authorization, role-based access control (RBAC), and permissions API
MojoAuth
Passwordless authentication platform offering magic links and SMS OTP codes
GetOTP
Instant two-factor one-time password (OTP) verification and SMS delivery
BitWarden
Open-source encrypted password management vault and credential sync API
LoginRadius
Customer identity and access management (CIAM) platform with social sign-in
About Free Authentication & IAM APIs
This directory curates 7 verified public APIs in the Authentication & IAM domain. Developers can build dashboards, mobile applications, automation bots, and microservices with these ready-to-integrate endpoints without upfront billing.
🔑 Do I need an API key?
Several APIs listed here operate as Zero-Auth services where you can execute queries directly. Others provide free developer tiers with an instant key upon registration.
⚡ Does FreeAPI support CORS?
Yes, all endpoints can be called through FreeAPI Smart Edge Gateway to bypass browser CORS headers and inspect live responses.