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performance-security
65 / 100 · Review before installing
Check before installing. Some of what it can do is expected: a security skill usually runs scanners and checks websites.
By MadAppGang/claude-code (GitHub) · security · 288 stars · scanned at commit 6097ad4
Use when optimizing performance or reviewing security. Covers code-splitting, React Compiler patterns, asset optimization, a11y testing, and security hardening for React apps.
Works with any agent that supports SKILL.md skills.
What this skill can do
Downloads and installs other software
The author does not mention this.
Found in 23 places.
Show 17 more
- plugins/frontend/commands/help.md, line 109
npm install -g claudeup@latest && claudeup mcp add chrome-devtools - plugins/frontend/commands/implement-ui.md, line 492
- Run typecheck: `npx tsc --noEmit` - plugins/frontend/commands/implement.md, line 105
- Ensure Claudish is installed: `npx claudish --version` - plugins/frontend/commands/implement.md, line 107
- Agents use single-shot mode: `npx claudish --model <model> --stdin --quiet` - plugins/frontend/commands/implement.md, line 186
npm install -g claudeup@latest - plugins/frontend/commands/implement.md, line 198
"command": "npx", - plugins/frontend/commands/implement.md, line 236
npx claudish --version 2>/dev/null || echo "Claudish not found" - plugins/frontend/commands/implement.md, line 278
npm install -g claudeup@latest - plugins/frontend/commands/implement.md, line 1397
- Claudish CLI installed (npx claudish --version) - plugins/frontend/commands/review.md, line 199
npx claudish --version 2>/dev/null || echo "Claudish not found" - plugins/frontend/commands/review.md, line 243
npm install -g claudeup@latest - plugins/frontend/commands/review.md, line 1444
1. Run: `npx claudish --list-models --json` - plugins/frontend/commands/validate-ui.md, line 54
npm install -g claudeup@latest - plugins/frontend/commands/validate-ui.md, line 66
"command": "npx", - plugins/frontend/mcp-servers/mcp-config.json, line 3
"command": "npx", - plugins/frontend/mcp-servers/mcp-config.json, line 11
"command": "npx", - plugins/frontend/mcp-servers/mcp-config.json, line 18
"command": "npx",
and 3 more places
Runs commands on your computer
The author does not mention this. It runs automatically when the plugin is installed. Expected for a security skill.
Found in 8 places.
Show 5 more
Connects to the internet
The author does not mention this. Expected for a security skill.
Found in 1 place.
Changes files outside its own folder
The author does not mention this.
Found in 6 places.
Show 3 more
Safer alternatives
Low-risk skills in the same category (security) that look related. Check that one does what you need.
Install
Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.
if [ -e ~/.agents/skills/'performance-security' ] || [ -L ~/.agents/skills/'performance-security' ]; then echo 'A skill folder named performance-security already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/MadAppGang/claude-code' "$d" && git -C "$d" checkout --quiet '6097ad4643f23b7645a9c99c329887b623b32e57' -- 'plugins/frontend/skills/performance-security' && mkdir -p ~/.agents/skills && cp -R "$d"/'plugins/frontend/skills/performance-security' ~/.agents/skills/'performance-security' && 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-security' ~/.claude/skills/'performance-security' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.
Badge for your README
The badge for MadAppGang/claude-code shows the score of its lowest-scoring skill.
[](https://zalavijaysinh.github.io/skilltrust/repos/MadAppGang/claude-code/)
Score history
| Date | Version | Score |
|---|
| 2026-11-12 | 6097ad4 | 65 |