Clerk JWT Templates API

openapi: 3.0.3
info:
  title: Clerk Backend Allowlist & Blocklist JWT Templates 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: JWT Templates
  description: Named claim templates for custom session tokens.
paths:
  /jwt_templates:
    get:
      operationId: listJWTTemplates
      tags:
      - JWT Templates
      summary: List all JWT templates
      responses:
        '200':
          description: A list of JWT templates.
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/JWTTemplate'
    post:
      operationId: createJWTTemplate
      tags:
      - JWT Templates
      summary: Create a JWT template
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateJWTTemplate'
      responses:
        '200':
          description: The created JWT template.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/JWTTemplate'
  /jwt_templates/{template_id}:
    parameters:
    - name: template_id
      in: path
      required: true
      schema:
        type: string
    get:
      operationId: getJWTTemplate
      tags:
      - JWT Templates
      summary: Retrieve a JWT template
      responses:
        '200':
          description: The requested JWT template.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/JWTTemplate'
    patch:
      operationId: updateJWTTemplate
      tags:
      - JWT Templates
      summary: Update a JWT template
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateJWTTemplate'
      responses:
        '200':
          description: The updated JWT template.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/JWTTemplate'
    delete:
      operationId: deleteJWTTemplate
      tags:
      - JWT Templates
      summary: Delete a JWT template
      responses:
        '200':
          description: Deletion confirmation.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DeletedObject'
components:
  schemas:
    CreateJWTTemplate:
      type: object
      required:
      - name
      - claims
      properties:
        name:
          type: string
        claims:
          type: object
          additionalProperties: true
        lifetime:
          type: integer
        allowed_clock_skew:
          type: integer
    JWTTemplate:
      type: object
      properties:
        id:
          type: string
        object:
          type: string
        name:
          type: string
        claims:
          type: object
          additionalProperties: true
        lifetime:
          type: integer
        created_at:
          type: integer
    DeletedObject:
      type: object
      properties:
        object:
          type: string
        id:
          type: string
        deleted:
          type: boolean
  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`.'