at-simplify
Refactor changed code to reduce duplication, complexity, and wasted work. Use for diffs, commit ranges, PRs, paths, staged changes, or working-tree changes.
npx skills add kairyou/agent-tools --skill at-simplify --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Simplify `at-simplify → 4 cleanup agents in parallel → apply the fixes` You are improving the quality of the changed code, not hunting for bugs. Review it for reuse, simplification, efficiency, and altitude issues, then fix what you find. Do not look for correctness bugs — that is what `at-review` is for. ## Phase 0 — Gather the diff Run `git diff "@{upstream}...HEAD"` (or `git diff main...HEAD` / `git diff HEAD~1` if there's no upstream) to get the unified diff under review. If there are uncommitted changes, or the range diff is empty, also run `git diff HEAD` and include the working-tree changes in scope — the review often runs before the commit. If a PR number, branch name, or file path was passed as an argument, review that target instead. Treat this diff as the review scope. ## Phase 1 — Review (4 cleanup agents in parallel) Launch **4 independent review agents** using multi-agent capabilities, all in a single message so they run concurrently. Pass each agent the diff and one of the four angles below. Each returns its findings with `file`, `line`, a one-line `summary`, and the concrete cost (what is duplicated, wasted, or harder to maintain). ### Reuse Flag new code that re-
- Phase 0 — Gather the diff
- Phase 1 — Review (4 cleanup agents in parallel)
- Reuse
- Simplification
- Efficiency
- Altitude
- Phase 2 — Apply the fixes
What does the at-simplify skill do?
Refactor changed code to reduce duplication, complexity, and wasted work. Use for diffs, commit ranges, PRs, paths, staged changes, or working-tree changes.
How do I install it?
Run `npx skills add kairyou/agent-tools --skill at-simplify --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From kairyou/agent-tools, a repository with 159 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.