Claude Code Skills Collection

174 production-ready skills for Claude Code CLI

Version 3.0.0 | Last Updated: 2025-12-30

A curated collection of battle-tested skills for building modern web applications with Cloudflare, AI integrations, React, Tailwind, and more.

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Quick Start

Marketplace Installation (Recommended)

# Add the marketplace
/plugin marketplace add https://github.com/secondsky/claude-skills

# Install individual skills as needed
/plugin install cloudflare-worker-base@claude-skills
/plugin install tailwind-v4-shadcn@claude-skills
/plugin install ai-sdk-core@claude-skills

See MARKETPLACE.md for complete catalog of all 174 skills.

Bulk Installation (Contributors)

# Clone the repository
git clone https://github.com/secondsky/claude-skills.git
cd claude-skills

# Install all 174 skills at once
./scripts/install-all.sh

# Or install individual skills
./scripts/install-skill.sh cloudflare-worker-base

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Repository Structure

This repository contains 174 production-tested skills for Claude Code, each focused on a specific technology or capability.

Individual Skills: Each skill is a standalone unit with:

• SKILL.md - Core knowledge and guidance
• Templates - Working code examples
• References - Extended documentation
• Scripts - Helper utilities

Installation Options:

1. Individual - Install only the skills you need via marketplace
2. Bulk - Install all 174 skills using ./scripts/install-all.sh

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Available Skills (174 Individual Skills)

Each skill is individually installable. Install only the skills you need.

Full Catalog: See MARKETPLACE.md for detailed listings.

Categories

Category	Skills	Examples
tooling	32	project-workflow, skill-review, turborepo, plan-interview
cloudflare	24	cloudflare-d1, cloudflare-workers-ai, cloudflare-agents
frontend	22	nuxt-v4, tailwind-v4-shadcn, tanstack-query, nuxt-studio, maz-ui
ai	20	openai-agents, claude-api, ai-sdk-core
api	16	api-design-principles, graphql-implementation
web	10	hono-routing, firecrawl-scraper, web-performance
mobile	8	swift-best-practices, react-native-app
database	6	drizzle-orm-d1, neon-vercel-postgres
security	6	csrf-protection, access-control-rbac
auth	5	better-auth, clerk-auth
testing	4	vitest-testing, playwright-testing
design	4	design-review, design-system-creation
woocommerce	4	woocommerce-backend-dev
cms	4	hugo, sveltia-cms, wordpress-plugin-core
architecture	3	microservices-patterns, architecture-patterns
data	3	sql-query-optimization, recommendation-engine
seo	2	seo-optimizer, seo-keyword-cluster-builder
documentation	1	technical-specification

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How It Works

Auto-Discovery

Claude Code automatically checks ~/.claude/skills/ for relevant skills before planning tasks:

User: "Set up a Cloudflare Worker with D1 database"
           ↓
Claude: [Checks skills automatically]
           ↓
Claude: "Found cloudflare-worker-base and cloudflare-d1 skills.
         These prevent 12 documented errors. Use them?"
           ↓
User: "Yes"
           ↓
Result: Production-ready setup, zero errors, ~65% token savings

Note: Due to token limits, not all skills may be visible at once. See ⚠️ Important: Token Limits below.

Skill Structure

Each skill includes:

skills/[skill-name]/
├── SKILL.md              # Complete documentation
├── .claude-plugin/
│   └── plugin.json       # Plugin metadata
├── templates/            # Ready-to-copy templates
├── scripts/              # Automation scripts
└── references/           # Extended documentation

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⚠️ Important: Token Limits

Skill Visibility Constraint

Claude Code has a 15,000 character limit for the total size of skill descriptions in the system prompt. This limit also applies to commands and agents.

What this means:

• Not all 169 skills may be visible in Claude's context at once
• Skills are loaded based on relevance and available token budget
• You can verify how many skills Claude currently sees by asking: "How many skills do you see in your system prompt?"

Checking Visible Skills

To verify which skills are currently loaded:

# Ask Claude Code directly
"Check what skills/plugins you see in your system prompt"

Claude will report something like: "79 of 96 skills visible due to token limits"

Workaround: Increase Token Budget

You can double the headroom for skill descriptions by setting an environment variable:

# Increase limit to 30,000 characters
export SLASH_COMMAND_TOOL_CHAR_BUDGET=30000

# Then launch Claude Code
claude

This gives you approximately 2x more skill visibility in the system prompt.

Note: This is a temporary workaround. The Claude Code team is working on better solutions for skill discovery and loading.

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Token Efficiency

Metric	Manual Setup	With Skills	Savings
Average Tokens	12,000-15,000	4,000-5,000	~65%
Typical Errors	2-4 per service	0 (prevented)	100%
Setup Time	2-4 hours	15-45 minutes	~80%

Across all 169 skills: 395+ documented errors prevented.

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Contributing

Prerequisites for Contributors

Install the official plugin development toolkit:

/plugin install plugin-dev@claude-code-marketplace

This provides:

• /plugin-dev:create-plugin command (8-phase guided workflow)
• 7 comprehensive skills (hooks, MCP, structure, agents, commands, skills)
• 3 specialized agents (agent-creator, plugin-validator, skill-reviewer)

Quick Steps

1. Create skill directory in plugins/
2. Add SKILL.md with YAML frontmatter
3. Run ./scripts/sync-plugins.sh
4. Submit pull request

See CONTRIBUTING.md and PLUGIN_DEV_BEST_PRACTICES.md for detailed guidelines.

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Documentation

Document	Purpose
START_HERE.md	Start here! Quick navigation guide
PLUGIN_DEV_BEST_PRACTICES.md	Repository-specific best practices (marketplace, budget, quality)
MARKETPLACE.md	Full skill catalog and installation guide
MARKETPLACE_MANAGEMENT.md	Technical infrastructure (plugin.json, scripts, validation)
CLAUDE.md	Project context and development standards
CONTRIBUTING.md	Contribution guidelines

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Links

• Repository: https://github.com/secondsky/claude-skills
• Issues: https://github.com/secondsky/claude-skills/issues
• Claude Code: https://claude.com/claude-code

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Built with ❤️ by Claude Skills Maintainers