Home › Directory › Auth & Identity
Auth & Identity
Authentication, identity and agent-authorization platforms and standards.
JSON: /api/v1/directory.json (filter on category=auth-identity)
Auth0
Identity platform with login, MFA and, increasingly, auth for AI agents.
Free tierAPI keyClerk
User management and authentication components for web apps.
Free tierAPI keyWorkOS
Enterprise SSO, directory sync and AuthKit for apps.
Free tierAPI keyStytch
Authentication APIs including passwordless, with agent and MCP auth support.
Free tierAPI keySupabase Auth
Open-source auth bundled with Supabase's Postgres platform.
Free tierAPI keyFirebase Authentication
Google's hosted authentication service with many sign-in providers.
Free tierAPI keyKeycloak
Open-source identity and access management server.
FreeNo authOry
Open-source identity infrastructure: Kratos, Hydra, Keto.
Free tierAPI keyAuthentik
Open-source identity provider and SSO.
FreeNo authBetter Auth
Framework-agnostic TypeScript authentication library.
FreeNo authLucia
Learning resource and patterns for implementing session auth.
FreeNo authOkta
Enterprise identity provider with developer APIs.
PaidAPI keyDescope
No-code and API authentication flows including agent identity.
Free tierAPI keyArcade.dev
Authorized tool-calling platform that lets agents act on users' behalf with OAuth.
Free tierAPI keyComposio
Managed integrations and authentication for agent tool use.
Free tierAPI keyNango
Open-source platform for OAuth and integrations to external APIs.
Free tierAPI keyPipedream Connect
Managed auth and API access to thousands of apps for agents.
Free tierAPI keyPasskeys (WebAuthn)
Standard for passwordless public-key authentication in browsers.
FreeNo authOAuth 2.0
The industry-standard authorization protocol.
FreeNo authOpenID Connect
Identity layer on top of OAuth 2.0.
FreeNo auth