Development Tools
Dummy API Generator — Test REST Endpoints Live
Explore and call a free REST API sandbox at express-two-umber.vercel.app — auth, users, products & cart endpoints. Not a port scanner — try requests now.
TL;DR: Browse documented REST endpoints (auth, users, products, cart) against https://express-two-umber.vercel.app/apis/v2, fill example JSON bodies, attach Bearer tokens when required, send live requests from the browser, and inspect status, headers, and response JSON — a sandbox, not a port scanner.
Reviewed by FYN Tools Editorial · Guides ·
Privacy & processing: HTTP requests go from your browser directly to the third-party sandbox API on Vercel. Request and response data are visible to that server.
Dummy API Generator
Explore and call a free REST API sandbox at express-two-umber.vercel.app — auth, users, products & cart endpoints. Not a port scanner — try requests now.
- Inputs
- Selected HTTP method/path, optional JSON body, optional Bearer token for protected routes
- Outputs
- HTTP status, response headers, and parsed JSON body with timing
- Processing
- Server-side target (external REST sandbox on Vercel)
- Limits
- Sandbox data only — not for production secrets; endpoint list fixed in UI; requiresAuth routes need a token from login/register
Quick steps
- Browse endpoints by auth, users, products, or cart category.
- Select a method/path to load its description and example body.
- Edit the JSON body if needed for POST, PUT, or PATCH calls.
- For requiresAuth routes, paste a Bearer token from a prior login.
- Click Send Request and read status code and response JSON.
- Copy response data or iterate with different payloads.
- Base URL express-two-umber.vercel.app/apis/v2
- Auth, users, products, cart endpoints
- Example JSON bodies
- Bearer token field
- Send Request with response viewer
Data input / output
| Inputs | Selected HTTP method/path, optional JSON body, optional Bearer token for protected routes |
|---|---|
| Outputs | HTTP status, response headers, and parsed JSON body with timing |
| Formats | REST JSON over HTTPS; base URL https://express-two-umber.vercel.app/apis/v2 |
| Limits | Sandbox data only — not for production secrets; endpoint list fixed in UI; requiresAuth routes need a token from login/register |
| Processing | Server-side target (external REST sandbox on Vercel) |
How to Use the Dummy API Generator
- Browse endpoints by auth, users, products, or cart category.
- Select a method/path to load its description and example body.
- Edit the JSON body if needed for POST, PUT, or PATCH calls.
- For requiresAuth routes, paste a Bearer token from a prior login.
- Click Send Request and read status code and response JSON.
- Copy response data or iterate with different payloads.
What is a Dummy API Generator?
Pick a category — auth, users, products, or cart — and select an endpoint such as POST /auth/login or GET /users. Example JSON bodies pre-fill the request textarea where applicable. Click Send Request to call the live sandbox at https://express-two-umber.vercel.app/apis/v2 and view status, headers, and response JSON.
Protected routes show a requiresAuth badge; register or login first, then paste the returned Bearer token into the authorization field. This helps prototype frontend flows against realistic REST shapes. It is not a port scanner or network probe tool.
ENDPOINTS array drives the UI catalog. Requests use fetch with method, headers, and optional JSON body. Responses display in structured cards with copy helpers. Categories group auth (register, login, change-password), users CRUD, products, and shopping cart operations.
How it works
Dummy API Generator reads your input from the panel above, applies base url express-two-umber.vercel.app/apis/v2, and shows a result you can copy or download. Options stay visible so you can iterate without reloading the page.
Explore more tools on our site.
Common Use Cases & Examples
- Auth flow demo: POST /auth/register then /auth/login to capture a token for GET /users/my.
- Product catalog UI: Call GET product endpoints to populate a mock storefront grid.
- Cart integration test: Exercise cart endpoints while building checkout components.
Input / Output Examples
Input
Configure options and click Generate
Output
Output that matches your selected settings
Frequently Asked Questions
What is a dummy API generator?+
A dummy API generator provides free REST API endpoints for testing and development. It allows students and developers to practice API integration, authentication, and CRUD operations without setting up their own backend server.
How do I get an API token?+
Use the POST /auth/login endpoint with your username/email and password. The response will include a Bearer token that you can use for authenticated requests. Tokens can be set to expire in 15m, 1h, 12h, 1d, or 7d.
What endpoints are available?+
Our dummy API includes login authentication, user creation (POST /users), listing users (GET /users), getting account info (GET /users/my), updating users (PUT /users/:id), deleting users (DELETE /users/:id), and status management (PATCH /users/:id/status).
Is this API free to use?+
Yes, our dummy API generator is completely free to use. There's no signup required, no usage limits, and no hidden fees. Perfect for students learning API development and developers testing integrations.
Can I use this for production applications?+
This is a dummy API designed for testing and learning purposes only. It should not be used for production applications. Use it for development, testing, and educational purposes.
What authentication method is used?+
The API uses Bearer token authentication. After logging in, you'll receive a JWT token that you include in the Authorization header as 'Bearer <token>' for protected endpoints.
How long do tokens last?+
By default, tokens expire in 15 minutes. You can request longer expiration times (1h, 12h, 1d, 7d) when logging in by including the 'expiresIn' parameter in your login request.
Key Features
- Base URL express-two-umber.vercel.app/apis/v2
- Auth, users, products, cart endpoints
- Example JSON bodies
- Bearer token field
- Send Request with response viewer
Benefits
Build UI against working endpoints before backend delivery.
Learn REST patterns with immediate feedback.
Test JWT-protected calls without deploying your own API.
When to Use Dummy API Generator
- Prototyping a frontend before your real backend exists
- Teaching REST verbs and JSON request bodies
- Testing Authorization header flows with register/login
- Demonstrating cart and product API shapes in workshops
Advantages
- Live REST sandbox with real HTTP round trips
- Categorized endpoint catalog with examples
- Bearer auth support for protected routes
- Response status, headers, and body inspection
Tips
- Register a fresh account before testing change-password or user CRUD.
- Keep sandbox passwords disposable — do not reuse real credentials.
- Read requiresAuth badges before wondering why a call returns 401.
- Use example JSON as a schema guide, then tweak fields incrementally.
Common Mistakes
Expecting open port scanning — this sends HTTP requests to a REST API only.
Calling protected routes without a Bearer token from login.
Storing production secrets in sandbox registration payloads.
Assuming sandbox data persists forever — treat it as disposable.
Summary
Pick a REST endpoint, send live requests to the Vercel sandbox, and inspect JSON responses — API testing, not port scanning.