Review recently changed code for reuse, simplification, efficiency, and consistency cleanups, then apply the fixes. Quality only — doesn't hunt for bugs. Triggers on 'simplify', 'clean this up', 'simplify this diff'.
Rigorous code review of completed implementation before committing. Use for features, refactors, and critical-path changes — not trivial changes (this is expensive).
Post-implementation checklist — docs, code quality, conventions, visual verification, issue hygiene. Triggers on 'finalize', 'ready to merge', 'preflight check', 'wrap this up', 'final review'.
Run the full pre-merge pipeline and create a PR. Triggers on 'ship', 'ship it', 'ready to ship', 'prep for PR', 'create PR', 'ready to merge'.
Spin up an isolated git worktree in its own tmux session — coding agent in one window, dev stack in another, git UI in a third — with the agent briefed and already working. Use for spinning up a worktree, starting a feature/branch/task in isolation, handing work to a fresh agent (Claude/Codex), or setting up an isolated tmux dev session.
Read, send input to, or spawn other tmux panes, windows, and sessions - including agents (Claude Code, Codex), REPLs, and TUIs running in them. Use when the user references another pane, window, or agent.
Query and apply The Website Specification — a platform-agnostic specification of what a good website does, with each item tagged required, recommended, optional, or avoid. Use when the user asks what their site should have, whether something is required, how to audit a URL, what's missing for agent readiness, or anything else where you'd otherwise be guessing at web best practice. Backs answers with primary sources (WHATWG, W3C, IETF RFCs, IANA, WCAG). Available as Markdown over HTTP and as an MCP server with search, list, fetch, checklist, and audit tools.
Build Ruby CLI tools with Thor and Zeitwerk. Use for new Ruby CLI gems, adding commands, refactoring, or 'Thor CLI', 'command-line tool in Ruby'.