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core-principles
67 / 100 · Review before installing
Check before installing. Some of what it can do is expected: a productivity skill usually connects to your mail, calendar or notes.
By MadAppGang/claude-code (GitHub) · productivity · 288 stars · scanned at commit 6097ad4
Use when planning new projects, onboarding, or reviewing architectural decisions. Core principles and project structure for React 19 SPA development. Covers stack overview, project organization, agent execution rules, and authoritative sources.
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. It runs automatically when the plugin is installed.
Found in 22 places.
Show 17 more
- 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", - plugins/frontend/.mcp.json, line 3
"command": "npx",
and 2 more places
Connects to the internet
This is disclosed by the author in the skill's SKILL.md or README. Expected for a productivity skill.
Found in 1 place.
Changes files outside its own folder
The author does not mention this.
Found in 6 places.
Show 3 more
Runs commands on your computer
The author does not mention this. It runs automatically when the plugin is installed.
Found in 3 places.
Safer alternatives
Low-risk skills in the same category (productivity) 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/'core-principles' ] || [ -L ~/.agents/skills/'core-principles' ]; then echo 'A skill folder named core-principles 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 "$d" checkout --quiet '6097ad4643f23b7645a9c99c329887b623b32e57' -- 'plugins/frontend/skills/core-principles' && mkdir -p ~/.agents/skills && cp -R "$d"/'plugins/frontend/skills/core-principles' ~/.agents/skills/'core-principles' && 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/'core-principles' ~/.claude/skills/'core-principles' (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 | 67 |