Retro Quest API — free mock REST API for testing

An original 16-bit RPG world for testing quests, inventory, saves and state transitions.

The Retro Quest API is a pixel-era RPG: heroes, quests, loot tables and save games. Saves carry a version, and writing over a newer save is rejected — a save-conflict model that is the simplest, most concrete illustration of optimistic concurrency in the whole catalog.

Base URL: https://funapi.dev/api/retro/v1 · 5 endpoints · OpenAPI 3.1 spec and Postman collection available. New here? Read the getting started guide.

Example request and response

GET https://funapi.dev/api/retro/v1/heroes — List pixel heroes. No token, no signup:

curl -i https://funapi.dev/api/retro/v1/heroes

answers 200 OK with:

{
  "total": 1,
  "data": [
    {
      "id": 1,
      "name": "Ada of Bytewood",
      "class": "debugger",
      "hp": 42,
      "xp": 120
    }
  ]
}

Open and run this endpoint

What you can practise here

• Load a save, write it back after another client has written a newer one, and read the conflict.
• Accept the same quest twice and see how the API responds.
• Roll loot from a table and confirm the response shape against your contract test.
• Create a hero with an invalid class and read the validation error.

heroes

pixel adventurers

• GET /retro/v1/heroes — List pixel heroes · Responds with 200 Link to this endpoint
• POST /retro/v1/heroes — Create a hero (requires Bearer auth) · Responds with 201 400 Link to this endpoint

quests

bugs disguised as monsters

• GET /retro/v1/quests — List quests by status · Responds with 200 Link to this endpoint
• POST /retro/v1/quests/{id}/accept — Accept a quest (409 if already accepted) (requires Bearer auth) · Responds with 200 409 Link to this endpoint
• POST /retro/v1/quests/{id}/complete — Complete an active quest (requires Bearer auth) · Responds with 200 409 Link to this endpoint

Related APIs

• Friends API — Characters, episodes & quotes from the coffee-house gang.
• Movies API — QA-themed cinema. Sort, filter, rate.
• Harry Potter API — Houses, students & spells from a magic school.
• Star Wars API — Characters, planets & starships from a galaxy far away.

All 39 mock REST APIs

Last updated 6 September 2026