OpenAPI / Swagger Generator

Build a valid OpenAPI 3.0 spec from your endpoint list. Export as YAML or JSON.

API Title

Version

Server URL

Method

Path

Summary

Method

Path

Summary

JSON Preview

{
  "openapi": "3.0.3",
  "info": {
    "title": "My API",
    "version": "1.0.0"
  },
  "servers": [
    {
      "url": "https://api.example.com"
    }
  ],
  "paths": {
    "/users": {
      "get": {
        "summary": "List users",
        "responses": {
          "200": {
            "description": "Successful response"
          }
        }
      },
      "post": {
        "summary": "Create a user",
        "responses": {
          "200": {
            "description": "Successful response"
          }
        }
      }
    }
  }
}

About the free OpenAPI / Swagger Generator

Build a valid OpenAPI 3.0 spec from your endpoint list. Export as YAML or JSON. The ToolsEdits OpenAPI / Swagger Generator runs online in your web browser, so there is nothing to download or install. It works on Windows, Mac, Linux, Android and iPhone, and it is completely free to use with no sign-up required.

Wherever possible, your data is processed directly on your own device, which keeps your files and information private and makes results appear instantly. The openapi / swagger generator is part of our Text Tools collection, built for students, professionals and businesses who need fast, reliable results without paying for expensive software.

How to use the OpenAPI / Swagger Generator

Enter your data or upload your file in the tool above.
Adjust the options and settings to match what you need.
Click the action button to get your result instantly.
Copy, download or share the result — then start again as many times as you like.