Estimate per-turn token cost of this project's `.claude/` configuration and `CLAUDE.md`. Reports always-loaded vs path-scoped vs invoked-only, ranks the top contributors, and flags entries over budget. Add `--api` for exact counts via Anthropic's count_tokens endpoint instead of the chars/4 heuristic.
Find and fix a bug. Default is careful (reproduce, investigate, test). Add `--fast` for emergency production mode (hotfix branch, minimal change, ship a PR fast).
Explain code. Default is a one-sentence summary plus a mental model. Add `verbose` to also get an ASCII diagram, key details, and a modification guide.
Review code changes or a pull request. Delegates to specialist agents for code quality, security, performance, and documentation, in parallel.
Safely refactor code with test coverage as a safety net
Scan changes, commit, push, and create a PR. With confirmation at each step
Test-Driven Development loop. Write a failing test first, then the minimum code to pass it, then refactor. Repeat.
Write comprehensive tests for new or changed code. Use automatically when new features are added, functions are created, or behavior is modified.