JevBird

A Python pygame Flappy Bird that can hand control to Jev, TypeSafe's System One model. The game simulates possible flight paths through the next pipe, asks Jev which path to fly, and schedules every flap in the chosen path at full speed.

Roughly once per pipe. The sample log shows a decision costing 412 ms and 2106 input tokens, with p=0.92 and confidence=0.90 on the chosen path, plus runners-up and their probabilities in the reply.

Only for Jev mode: create a key at console.typesafe.ai and put TYPESAFE_API_KEY in a .env file next to the script or in the environment. Without a key the game still runs in manual mode, where you flap with Space, Up or a left click.

Yes. Setting JEV_BASE_URL, for example http://localhost:8000 for a self-hosted System One server such as Laya, takes priority over TYPESAFE_API_KEY and needs no key; the game then sends plain POST requests to /v1/systemone.

The purple line is the chosen path, white lines are rejected candidates with opacity set by Jev's probability for each, white arrows mark scheduled flaps, and a purple band marks the safe corridor 55 px either side of the gap centre. A bottom panel shows probability, confidence, round-trip time and call count.

Python 3.10 or newer, with pygame and typesafe-sdk from pip install -r requirements.txt, then python flappy_bird.py. Space, Up or left click flaps and starts or restarts, J toggles Jev mode, Escape quits, and the high score is saved to highscore.txt.

leftspace89 published it under the MIT licence, created and pushed on 17 September 2026. The repository includes a GIF preview and a full 2 minute 35 second 1080p recording, and every request and reply is printed to the console as it happens.