Everything Claude Code: What's Worth Taking (And What Isn't)

Everything Claude Code is an Anthropic Hackathon-winning repo with 50K+ stars. It ships 156 skills, 72 commands, 38 agents, and a full hooks system for Claude Code. Here's my honest breakdown after auditing it for my own stack.

What's Actually In Here

The repo is structured around four core components:

Component	Count	What it does
skills/	156	Workflow definitions — domain knowledge bundled into reusable prompts
commands/	72	Slash command shims (mostly /tdd, /plan, /code-review, etc.)
agents/	38	Subagent configs for delegating specific tasks
hooks/	12+	Lifecycle automations (PreToolUse, Stop, SessionStart, etc.)

Plus language-specific rules for TypeScript, Python, Go, Java, Kotlin, Swift, C++, Rust, Perl, PHP, and more.

Claude-Only vs Cross-Agent

The first thing to understand: most of this is Claude Code-specific.

Claude Code only:

• ~/.claude/skills/ — only Claude Code reads these
• ~/.claude/commands/ — slash command definitions
• ~/.claude/agents/ — subagent configs
• Hooks in settings.json — lifecycle events Claude Code fires

Cross-agent (works with Gemini, Cursor, etc.):

• rules/common/*.md — security and style guidelines any AI can follow
• mcp-configs/ — MCP server JSON configs, client-agnostic
• Any rule content you paste into a shared CLAUDE.md / AGENTS.md

If you run multiple AI environments (I use Claude Code + Antigravity/Gemini), the rules folder is the most transferable investment.

The Hooks Problem

The hooks look powerful on paper:

{
  "PreToolUse": [
    {
      "matcher": "Bash",
      "hooks": [{ "type": "command", "command": "npx block-no-verify@1.1.2" }],
      "description": "Block --no-verify on git commits"
    }
  ]
}

But 90% of them reference ${CLAUDE_PLUGIN_ROOT}/scripts/hooks/*.js — Node.js scripts that only exist inside the installed plugin. You cannot cherry-pick the hooks JSON without installing the full package.

The simpler hooks (like block-no-verify) work standalone. The rest require install.ps1 --profile full.

What I Actually Kept (Cloudflare/React Stack)

My stack is JavaScript, React/Docusaurus, and Cloudflare Workers — not Python or Java. Out of 156 skills, about 8 are directly relevant:

Skills worth keeping:

Skill	Why
security-review	Auth endpoints, API keys, worker security
mcp-server-patterns	Building MCP servers on Cloudflare Workers
api-design	REST conventions for multi-tenant APIs
frontend-patterns	React component patterns
deployment-patterns	Cloudflare Pages/Workers deploy flow
database-migrations	D1 schema management
git-workflow	Branch strategy and commit conventions

Commands worth keeping:

Command	Why
/code-review	Pre-push quality check
/security-scan	Before deploying auth code
/build-fix	When Docusaurus build breaks
/plan	Implementation planning on complex features

Agents worth keeping:

Agent	Why
code-reviewer.md	Delegate review to subagent
security-reviewer.md	Dedicated security analysis

Rules worth merging into CLAUDE.md:

• rules/common/security.md — solid baseline checklist
• rules/common/coding-style.md — immutability, file organization

What I Skipped

• All Python, Java, Kotlin, Swift, Android, Rust, PHP, Perl skills (not my stack)
• The full hooks system (requires Node.js environment + full install)
• Agent harness orchestration (overkill for a solo operator)

How to Install Selectively

The repo ships install.ps1 / install.sh with --profile full or per-language flags:

# Install only what you need
.\install.ps1 typescript     # TypeScript rules only
.\install.ps1 --profile full  # Everything (156 skills, all rules)

For a selective cherry-pick without the installer:

# Copy only the skills you want
cp -r skills/security-review ~/.claude/skills/
cp -r skills/mcp-server-patterns ~/.claude/skills/
cp -r skills/api-design ~/.claude/skills/

# Copy useful commands
cp commands/code-review.md ~/.claude/commands/
cp commands/security-scan.md ~/.claude/commands/

# Copy common rules
cp rules/common/security.md ~/.claude/rules/

Bottom Line

ECC is genuinely useful — but it's built for polyglot teams shipping TypeScript, Python, Go, Java, and Kotlin simultaneously. If your stack is narrower, install selectively.

The two things worth having regardless of stack:

1. rules/common/security.md — every project benefits from this checklist
2. skills/security-review/ — activates automatically when you touch auth code

Everything else: read the skill, decide if it matches your actual workflow, copy only what you'll actually invoke.

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Stack: Cloudflare Workers + D1, Docusaurus 3.7, React 18, PowerShell. Running Claude Code (Pro) as primary coding environment.