- Category
- Education
- Rank
- No. 1590Tools index
- Pricing
- Open Source
- Type
- APP
- GitHub
- 15 stars
- Latest release
- v1.0.0-beta.9
- Date
About
Codemm is an open-source app and command-line harness for learning to code by practice, with the user's own coding agent (Claude Code or Codex) writing lessons and exercises. Codemm accepts an exercise only if the reference solution passes, the starter fails and the tests catch every deliberately broken variant, then grades the learner's code in a Docker sandbox and tracks mastery. It launches the agent and never calls a model API or handles credentials.
Why it made the leaderboard
Codemm validates agent-written exercises mechanically (reference passes, starter fails, mutants caught) before you see them, so you learn from checked exercises rather than unverified LLM output. It reuses your Claude Code or Codex account.
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Editorially curated, with community endorsements as a secondary signal. Corrections welcome.