openapi: 3.0.3
info:
  title: readOnly response test
  version: 1.0.0
paths:
  /items:
    get:
      operationId: item_list
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ItemListResponse'
components:
  schemas:
    ItemListResponse:
      type: object
      required:
        - items
      properties:
        items:
          type: array
          items:
            $ref: '#/components/schemas/Item'
    Item:
      type: object
      required:
        - id
        - name
      properties:
        id:
          type: string
          readOnly: true
          description: Server-generated ID
        name:
          type: string
        created_at:
          type: string
          format: date-time
          readOnly: true
          description: Server-generated timestamp