JSON Server

A tool that exposes a JSON file through a mock REST API.

What it does

A tool that exposes a JSON file through a mock REST API.

Prototyping a frontend before its real backend is available.

@msw/playwright — Controlling network responses during browser-level application tests.
@mswjs/data — Building a stateful mocked backend for application test scenarios.
Argos — Detecting interface changes by comparing screenshots in development workflows.
enforce-unique — Avoiding duplicate fixture values while creating test data.
Faker — Creating sample users, records, and large development datasets.

Editorial overview reviewed on October 24, 2026. Follow the source for current setup, compatibility, and licensing.