openapi: 3.0.3
info:
  title: Common parameters
  description: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.3.md#path-item-object
  version: 1.0.0
servers:
  - url: https://httpbin.org
paths:
  '/anything/{id}':
    summary: '[common] Summary'
    description: '[common] Description'
    parameters:
      - in: path
        name: id
        description: ID parameter
        schema:
          type: number
        required: true
      - in: header
        name: x-extra-id
        schema:
          type: string
    get:
      summary: '[get] Summary'
      description: '[get] Description'
      responses:
        '200':
          description: OK
    post:
      summary: '[post] Summary'
      description: '[post] Description'
      parameters:
        - '$ref': '#/components/parameters/limitParam'
      responses:
        '200':
          description: OK
  '/anything/{id}/{action}':
    summary: '[common] Summary'
    description: '[common] Description on an operation with **multiple** common path
      parameters.'
    parameters:
      - in: path
        name: id
        description: ID parameter
        schema:
          type: number
        required: true
      - in: path
        name: action
        description: Action parameter
        schema:
          type: string
          enum:
            - lists
            - statistics
        required: true
    get:
      summary: '[get] Summary'
      description: '[get] Description'
      responses:
        '200':
          description: OK
  '/anything/{id}/{action}/{id}':
    summary: '[common] Summary'
    description: '[common] Description on an operation with **multiple** common path
      parameters, one of which is used more than once in the path.'
    parameters:
      - in: path
        name: id
        schema:
          type: number
        required: true
      - in: path
        name: action
        description: Action parameter
        schema:
          type: string
          enum:
            - lists
            - statistics
        required: true
    get:
      summary: '[get] Summary'
      description: '[get] Description'
      responses:
        '200':
          description: OK
  '/anything/{id}/override':
    summary: This path item has a common parameter that's overridden by the more specific
      operation.
    parameters:
      - name: id
        in: path
        description: ID parameter
        schema:
          type: string
        required: true
    get:
      parameters:
        - name: id
          in: path
          description: A comma-separated list of IDs
          schema:
            type: string
          required: true
      responses:
        '200':
          description: OK
components:
  parameters:
    limitParam:
      in: query
      name: limit
      required: false
      schema:
        type: integer
        minimum: 1
        maximum: 50
        default: 20
      description: The numbers of items to return.