FusionAuth API

Authentication & Authorization · Operational · 30d uptime 100%

Identity platform APIs for users, applications, tenants, registrations, and auth flows. Official documentation: https://fusionauth.io/docs/apis/

Trust signals

Pricing
FREEMIUM
Auth
API_KEY
CORS
Yes
Rate limit
Unknown
Health
120ms
Trust score
97 (A)

Last checked Sep 4, 2026 · uptime 24h 100% / 7d 100% / 30d 100%

Excellent production-readiness signals.

Links

Integration checklist

  • Auth is API_KEY
  • CORS enabled — callable directly from browsers.
  • Rate limit: not documented
More authentication & authorization APIs
FusionAuth API API — pricing, auth, CORS & health | Reqistry