{
  "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."
      }
    }
  }
}