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performance

95 / 100 · Low risk

Fine to try.

By rshankras/claude-code-apple-skills (GitHub) · coding · 882 stars · scanned at commit f958982

Performance profiling and SwiftUI debugging skills — Instruments guidance, hangs, memory issues, slow launches, energy drain, unnecessary re-renders, and view identity problems. Use when an app is slow, janky, or resource-hungry.

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'performance' ] || [ -L ~/.agents/skills/'performance' ]; then echo 'A skill folder named performance already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/rshankras/claude-code-apple-skills' "$d" && git -C "$d" checkout --quiet 'f9589828e222113d49c7bff417c33038802856ff' -- 'skills/performance' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/performance' ~/.agents/skills/'performance' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'performance' ~/.claude/skills/'performance' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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