Playground/Arcade
API ACTIVITY

Usage & budget

PLAYGROUND SAFETY LIMITS

Steady requests. Visible limits.

0 active · 0/20 queued

Browser: one start every 1.2 seconds (at most 50/minute), up to 2 active calls and 20 waiting. Shared by examples in this tab. Waiting requests cancel when their run is stopped; a full queue rejects new work without an API call.

Server: 60 requests per rolling 60 seconds and 2 concurrent calls per key, per server instance. Other tabs using the same key share that instance’s allowance. This in-memory safeguard resets on restart and is not a distributed or account-wide quota.

Source: playground policy in lib/requestRateLimit.ts. TypeSafe may impose separate limits. Provider HTTP 429 pauses calls until its reported reset; without a reset time, retry requires your action. HTTP 402 is a budget/billing failure, not a pacing limit. No automatic retries or background replay.

Your TypeSafe API key

Import your key to override the shared server default.

Saved on this browser until removed or site data is cleared. Masked on screen; sent only with Jev requests through this app. The saved value is never displayed.

Connecting

TYPESAFE AI / ARCADE

Insert coin.
Jev takes the controls.

Classic games Jev can actually play: one legal move at a time, scored against a random baseline.

Game stateLegal movesScore vs. baseline

Jev chooses inside a fixed set.
Code decides what that choice may do.

Games3

Each game runs the same seed for Jev and a random baseline, so you can see whether Jev's choices beat chance.

Snake

Steer toward the apple without hitting a wall or your own tail, one turn per decision.

in
Board features
out
next direction

Breakout

Keep the ball in play and clear bricks by moving the paddle left, right or holding still.

in
Ball and paddle
out
paddle move

Meteor dodge

Fly a ship through five lanes of falling meteors and survive as long as possible.

in
Lanes ahead
out
lane change