{
  "openapi": "3.1.0",
  "info": { "title": "Things", "version": "0.1" },
  "servers": [{ "url": "https://things.example.com" }],
  "paths": {
    "/things": {
      "post": {
        "operationId": "makeThing",
        "requestBody": {
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "properties": {
                  "label": { "type": ["string", "null"], "examples": ["widget"] },
                  "count": { "type": "integer" }
                }
              }
            }
          }
        },
        "responses": { "201": { "description": "created" } }
      }
    }
  }
}