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.