sample-openapi.json

{
  "openapi": "3.0.0",
  "info": {
    "title": "Demo API",
    "description": "The Demo API is not a real API.",
    "version": "1.0.0"
  },
  "paths": {
    "/users": {
      "post": {
        "summary": "Create user",
        "description": "Creates a user",
        "operationId": "postUsers",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "required": [
                  "name"
                ],
                "properties": {
                  "name": {
                    "type": "string",
                    "description": "The user's first + last name"
                  }
                }
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "OK",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "id": {
                      "type": "string",
                      "description": "The created user's ID"
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "country": {
        "type": "string",
        "nullable": true,
        "enum": [
          "foo",
          "bar"
        ]
      }
    }
  }
}