Free & open source

Mock anything.
Instantly.

Create mock API servers in seconds. Define your endpoints, get a live URL, and test your frontend without waiting for the backend.

mocka.qzz.io

GET /api/users
→ 200 [{ "id": 1, "name": "Alice" }, ...]

POST /api/users
→ 201 { "id": 3, "created": true }

DELETE /api/users/:id
→ 204 No Content

Everything you need to mock

No complex setup. No backend needed. Just define and go.

{ }

JSON, XML, HTML, plain text — return anything with custom status codes and headers.

GET, POST, PUT, PATCH, DELETE — mock any endpoint with any method.

Add custom delays to simulate real-world network conditions and loading states.

All mock endpoints come with CORS headers enabled by default. No config needed.

Each mock project gets a unique URL. Share it with your team instantly.

Export your mock configuration as JSON. Import it later or share it across projects.

Choose HTTP methods, set paths, and write your response bodies. Add headers and delays if needed.

Your mock server is instantly available at a unique URL. No deployment needed.

Point your frontend to your mock URL and develop without waiting for the real API.