openapi: 3.0.3
info:
  title: Clerk Backend Allowlist & Blocklist Organization Memberships API
  description: 'The Clerk Backend API manages Clerk''s authentication and user management resources server-side: users, organizations and memberships, sessions, clients, sign-ups, JWT templates, JWKS, email/SMS verification and templates, allowlist/blocklist identifiers, invitations, SAML/enterprise connections, OAuth applications, and Svix-powered webhooks. The base URL is https://api.clerk.com/v1 and every request (except GET /jwks and the public interstitial) is authenticated with your instance Secret Key passed as `Authorization: Bearer sk_...`. This description is grounded in Clerk''s published OpenAPI spec (github.com/clerk/openapi-specs, bapi) but is a curated subset covering the primary resource groups; it does not enumerate every parameter or schema property. Verify the current version-dated spec on GitHub for the authoritative contract.'
  version: '2026-05-12'
  contact:
    name: Clerk
    url: https://clerk.com
  license:
    name: Clerk Documentation
    url: https://clerk.com/docs
servers:
- url: https://api.clerk.com/v1
  description: Clerk Backend API
security:
- bearerAuth: []
tags:
- name: Organization Memberships
  description: Members of an organization and their roles.
paths:
  /organizations/{organization_id}/memberships:
    parameters:
    - $ref: '#/components/parameters/OrganizationId'
    get:
      operationId: listOrganizationMemberships
      tags:
      - Organization Memberships
      summary: List organization memberships
      responses:
        '200':
          description: A list of organization memberships.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/OrganizationMembership'
                  total_count:
                    type: integer
    post:
      operationId: createOrganizationMembership
      tags:
      - Organization Memberships
      summary: Create an organization membership
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - user_id
              - role
              properties:
                user_id:
                  type: string
                role:
                  type: string
      responses:
        '200':
          description: The created membership.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/OrganizationMembership'
  /organizations/{organization_id}/memberships/{user_id}:
    parameters:
    - $ref: '#/components/parameters/OrganizationId'
    - $ref: '#/components/parameters/UserId'
    patch:
      operationId: updateOrganizationMembership
      tags:
      - Organization Memberships
      summary: Update an organization membership role
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - role
              properties:
                role:
                  type: string
      responses:
        '200':
          description: The updated membership.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/OrganizationMembership'
    delete:
      operationId: deleteOrganizationMembership
      tags:
      - Organization Memberships
      summary: Remove a member from an organization
      responses:
        '200':
          description: The removed membership.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/OrganizationMembership'
components:
  parameters:
    UserId:
      name: user_id
      in: path
      required: true
      description: The ID of the user.
      schema:
        type: string
    OrganizationId:
      name: organization_id
      in: path
      required: true
      description: The ID or slug of the organization.
      schema:
        type: string
  schemas:
    OrganizationMembership:
      type: object
      properties:
        id:
          type: string
        object:
          type: string
        role:
          type: string
        permissions:
          type: array
          items:
            type: string
        public_metadata:
          type: object
          additionalProperties: true
        created_at:
          type: integer
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: 'Your Clerk instance Secret Key (starts with sk_test_ or sk_live_) passed as `Authorization: Bearer YOUR_SECRET_KEY`.'