🚀 Mock APIs Just Got an Upgrade: Network Delay Simulation, Error Testing & Postman Exports in Playground API v2

A few days ago, I introduced Playground API—a zero-config, stateful mock REST API designed to solve a huge frontend headache: mock APIs like standard JSONPlaceholder that instantly discard your POST, PUT, and DELETE state changes.

Playground API changed that by introducing zero-login per-session sandboxing, giving developers real data persistence in their browser without database setups or account creation.

Since then, based on awesome feedback from the community, I've shipped a massive v2.0 update packed with features designed specifically for modern frontend development, UI edge-case testing, and E2E automation! ⚡

Here is a breakdown of what's new and how you can use Playground API to level up your development workflow.

🆕 What’s New in Playground API v2.0?

🚀 Mock APIs Just Got an Upgrade: Network Delay Simulation, Error Testing & Postman Exports in Playground API v2

Related reading

Stop Faking Your Mock APIs: Introducing Playground API 🚀

FakeAPI — A Mutable, Isolated REST Sandbox for Testing and Prototyping

API Testing with Python and pytest: Writing Real Tests Against a Live Mock API

When the Mock Is Right and the API Isn't Anymore

The Playwright Playbook — Part 4: API Testing — The Underrated Superpower

Mock any API response in Postman (and let AI build the collection)