kodwai is a platform where developers solve real coding challenges on their own machine with their own AI coding agent (Claude Code, Cursor, or Codex) and get scored on how well they direct the agent, across three axes: Direction, Outcome, and Lift.
How it works: pick a challenge, run the CLI and choose your agent, solve on your own machine, submit with one command, get your score. The CLI downloads PROBLEM.md, starter files and tests, inits a git repo and starts the timer. There is no browser sandbox.
npx @kodwai/cli challenge bookshelf-rest-api
npx @kodwai/cli submit
The three axes:
Direction: how you steer, verify, and decompose.
Outcome: what shipped, replayed and stress-tested to prove it holds.
Lift: how far you beat a solo AI, not just that you passed.
Every signal cites its own evidence from your transcript, commits, and test runs, and your score comes with a confidence interval instead of false precision.
Solving challenges, the score, the public profile and the leaderboard are free for developers. Every account gets 3 free submissions scored on kodwai's own key. After that you connect your own Anthropic API key in Settings. It is encrypted at rest and only used to score your own work.
The CLI is @kodwai/cli on npm and needs Node.js 20+ and git.
kodwai 
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