{"id":"clerk-api","name":"Clerk API","homepage":"https://clerk.com","repo_url":"https://github.com/clerkinc/javascript","category":"authentication","subcategories":["identity","user-management","mfa"],"tags":["clerk","authentication","identity","user-management","nextjs","react","jwt","rest-api","sdk"],"what_it_does":"Developer-friendly authentication and user management platform with drop-in UI components, a Backend API for user/org management, and first-class Next.js and React support.","use_cases":["Adding auth to Next.js or React apps with minimal setup","Managing users and organizations via Backend API in agent workflows","Implementing multi-tenancy with organization support","Querying user sessions and metadata from backend agents","Syncing user data to databases via webhooks"],"not_for":["Non-JavaScript ecosystems (limited backend SDK support outside Node)","Enterprise SAML SSO without paying for Pro plan","Teams needing self-hosted auth"],"best_when":"You're building a Next.js/React app and want authentication done in a day with a clean developer experience.","avoid_when":"You need enterprise SAML/SCIM on a free plan or require a non-JS backend SDK.","alternatives":["auth0-api","workos-api","firebase-auth-api","okta-api"],"af_score":85.3,"security_score":null,"reliability_score":null,"package_type":"mcp_server","discovery_source":["github"],"priority":"low","status":"evaluated","version_evaluated":"current","last_evaluated":"2026-03-01T09:50:05.386995+00:00","performance":{"latency_p50_ms":100,"latency_p99_ms":400,"uptime_sla_percent":99.99,"rate_limits":"Not publicly documented; generous limits in practice","data_source":"llm_estimated","measured_on":null}}