Clerk Backend API
Authentication & Authorization · Operational · 30d uptime 100%
Backend API for users, organizations, sessions, invitations, and authentication resources. Official documentation: https://clerk.com/docs/reference/backend-api
Trust signals
Pricing
FREEMIUM
Auth
API_KEY
CORS
Yes
Rate limit
Unknown
Health
127ms
Trust score
97 (A)
Last checked Sep 4, 2026 · uptime 24h 100% / 7d 100% / 30d 100%
Excellent production-readiness signals.
Links
- Homepageclerk.com
- Documentationclerk.com/docs/reference/backend-api
- Base URLclerk.com/docs/reference/backend-api
- OpenAPI specgithub.com/clerk/openapi-specs
Integration checklist
- Auth is API_KEY
- CORS enabled — callable directly from browsers.
- Rate limit: not documented