Fun API Playground

25 free, no-signup mock REST APIs (Friends, Star Wars, Harry Potter, Pokémon, Pizza, Bank, Airline & more) with Swagger-style docs, Bearer auth, pagination, GraphQL, webhooks, and every HTTP status code — 400, 401, 403, 409, 412, 418, 429, 500 — to practice QA and API testing.

This interactive playground needs JavaScript enabled to run the API engine in your browser.

Airline API Docs — Fun API Playground

Book seats on four questionable flights. Practice 409 seat conflicts and overbooking, a booking state machine (confirmed → checked-in → cancelled), 410 Gone fo…