Customize: Token bucket rate limiter

The prompt comes from a post by Parker Rex. Watch the video

Make it yours

Everything is optional. Your details stay in this browser and carry over to the next prompt.

The highlighted part at the end is added from your details and dials. Where it disagrees with the prompt, it wins.

explain a token bucket rate limiter, canvas only, no libraries, every frame a pure function of time so my renderer can screenshot it.

For best results, run it with Claude Opus 5.5.