Rings cuts any Git repo open like a tree trunk: one ring per month since the first commit, wider when the month was busier, coloured wherever the commit history itself discloses AI: a Co-authored-by or Assisted-by line naming a coding agent (Claude, Codex, Copilot, Cursor…), an AI agent's own account, or a bot-named account. Browse 37 famous repos or ring your own with an open-source Agent Skill and CLI. Node built-ins only, no API keys, nothing uploaded. Disclosure is not usage.
