DummyJSON
DummyJSON is a free hosted REST API that supplies fake JSON data for frontend development, building, and testing without backend setup.
What DummyJSON is
DummyJSON is a free hosted REST API that supplies fake JSON data for frontend development, building, and testing without backend setup. Its listed resources include products, carts, users, posts, comments, quotes, todos, recipes, images, and authentication. Requests support limit, skip, and select parameters, and setting limit=0 returns all items. A delay parameter can simulate responses from 0 to 5000 milliseconds. Users can create hosted mock API endpoints with their own JSON response body and choose GET, POST, PUT, PATCH, or DELETE. These endpoints remain available for 90 days and accept response bodies up to 300 KB. A webhook inspector captures incoming requests for debugging and supports all HTTP methods. Each webhook stays live for 24 hours, stores up to 100 requests, and accepts payloads up to 300 KB; authorization, cookie, and x-api-key headers are removed before storage. Other tools include a TOTP generator for base32 secrets and otpauth URIs, plus authentication examples for login, access and refresh tokens, and authenticated resources. Product additions or updates simulate a response rather than changing stored server data.
Good
- Free hosted fake REST API data
- Includes a broad set of JSON resources
- Supports configurable response delays
- Custom endpoints support five HTTP methods
Watch out
- Custom response endpoints expire after 90 days
- Webhook endpoints remain live for 24 hours
- Product updates do not change stored server data
Who it suits
DummyJSON suits frontend developers who need fake JSON resources or mock responses without setting up a backend. Its webhook inspector and authentication examples also suit people building or debugging API integrations.
Verdict
DummyJSON provides sample data and mock API tools for frontend work without a backend setup. Keep the endpoint durations and simulated product updates in mind when planning a workflow.
Plans and prices
From DummyJSON's own pricing page, checked 4 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| DummyJSON | Free | Free fake REST API; no price stated |
The facts
Each one read from DummyJSON's own pages, with the date it was checked.
What it does
- Authentication
- The auth endpoints demonstrate login, access and refresh tokens, and authenticated resource access.checked 4 Oct 2026
- Custom API
- Users can create a hosted mock REST API endpoint with their own JSON response body and select GET, POST, PUT, PATCH, or DELETE.checked 4 Oct 2026
- Custom API limits
- Custom response endpoints last 90 days and accept JSON response bodies up to 300 KB.checked 4 Oct 2026
- Datasets
- The site lists products, carts, users, posts, comments, quotes, todos, recipes, images, and authentication resources.checked 4 Oct 2026
- Mock data behavior
- Adding or updating products simulates the request and returns a result without changing the server’s stored data.checked 4 Oct 2026
- Pagination
- Resources support limit, skip, and select query parameters, and limit=0 returns all items.checked 4 Oct 2026
- Purpose
- DummyJSON provides fake REST API data for frontend development, building, and testing without backend setup.checked 4 Oct 2026
- Response delay
- A delay query parameter can simulate responses from 0 to 5000 milliseconds.checked 4 Oct 2026
- Scale
- The homepage states that DummyJSON serves over 500 million requests monthly.checked 4 Oct 2026
- TOTP tool
- The TOTP tool generates real-time verification codes and supports base32 secrets and otpauth URIs.checked 4 Oct 2026
- Usage
- The documentation says DummyJSON can be used with any type of frontend project needing dummy data in JSON format.checked 4 Oct 2026
- Webhook limits
- Each webhook stores up to 100 requests, accepts payloads up to 300 KB, and strips authorization, cookie, and x-api-key headers before storage.checked 4 Oct 2026
- Webhook tool
- The webhook inspector captures incoming requests for debugging, supports all HTTP methods, and keeps endpoints live for 24 hours.checked 4 Oct 2026
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