Clerk Backend API
Server-to-server REST API for managing users, sessions, organizations, organization memberships, organization invitations, JWT templates, sign-in tokens, OAuth applications, SAML connections, allowlist / blocklist identifiers, actor tokens, webhooks, and instance settings. Authenticated with a Bearer secret key (sk_test_... or sk_live_...). Versioned under /v1.
Clerk Backend API is one of 18 APIs that Clerk publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include Backend, REST, Users, Sessions, and Organizations. The published artifact set on APIs.io includes API documentation and an OpenAPI specification.