Build a bot with your AI agent. Watch it fight.
Agent Sensei is a programming competition built for how developers work now: you and your coding agent build a bot together, test it locally, and climb a live ladder.
Building and playing is fully local — no account needed. Sign in only when you want to put a bot on the ladder.
By the numbers
How it works
One repo, one command. Your agent reads the docs and coaches you to a first bot in minutes.
An embedded referee — byte-identical to the server — gives you instant matches and watchable replays.
Ranked matches run on our infrastructure. Ratings settle fast; every game is replayable.
Climb the leagues
Show your work
An example of the build-effort badge — it's opt-in: declare how many agent tokens and which models shaped your bot (ADR 0001). It is self-reported — a point of pride, never a ranking input.
Shown on your player profile.