Claude Code Skills Collection
142 production-ready skills for Claude Code CLI
Version 3.5.0 | Last Updated: 2026-07-18
🔌 Platform Support
This repository uses Claude Plugin Patterns — natively supported by:
| Platform | Status | Notes |
|---|
| Claude Code | ✅ Native | Full marketplace support |
| Factory Droid | ✅ Native | Full marketplace support |
A curated collection of battle-tested skills for building modern web applications with Cloudflare, AI integrations, React, Tailwind, and more.
PS: if skills.sh warns about any skill: Their scan process is a outdated LLM which flags newest versions pins (like in ZOD) as non existent and by that potentially malicous.
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-d1@claude-skills
/plugin install tailwind-v4-shadcn@claude-skills
/plugin install gemini-cli@claude-skills
See MARKETPLACE.md for complete catalog of all 139 skills.
Bulk Installation (Contributors)
# Clone the repository
git clone https://github.com/secondsky/claude-skills.git
cd claude-skills
# Install all 139 skills at once
./scripts/install-all.sh
# Or install individual skills
./scripts/install-skill.sh cloudflare-d1
Repository Structure
This repository contains 139 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:
- Individual - Install only the skills you need via marketplace
- Bulk - Install all 139 skills using
./scripts/install-all.sh
Available Skills (139 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 | 22 | turborepo, plan-interview, code-review |
| frontend | 26 | nuxt-v4, nuxt-v5, tailwind-v4-shadcn, tanstack-query, nuxt-studio, maz-ui, threejs |
| cloudflare | 21 | cloudflare-d1, cloudflare-workers-ai, cloudflare-agents |
| api | 16 | api-design-principles, graphql-implementation |
| ai | 7 | gemini-cli, ml-model-training, tanstack-ai |
| web | 10 | hono-routing, firecrawl-scraper, web-performance |
| security | 5 | csrf-protection, xss-prevention |
| mobile | 5 | react-native-app, react-native-skills |
| woocommerce | 4 | woocommerce-backend-dev |
| testing | 4 | vitest-testing, playwright-testing |
| design | 4 | design-review, design-system-creation |
| auth | 4 | better-auth |
| architecture | 3 | microservices-patterns, architecture-patterns |
| data | 2 | recommendation-engine, recommendation-system |
| cms | 2 | hugo, wordpress-plugin-core |
| database | 1 | drizzle-orm-d1 |
| seo | 2 | seo-optimizer, seo-keyword-cluster-builder |
| documentation | 1 | technical-specification |
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-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
Recent Additions
July 2026
Offensive Security (new category):
- cybersecurity — Unified OSS-only cybersecurity skill with progressive disclosure. Fuses 7 community skills (mukul975 business-logic/XSS/host-header/forced-browsing/open-redirect, rysweet/amplihack cybersecurity-analyst, Aradotso security-detections-mcp) ported to fully open-source tooling (OWASP ZAP, Dalfox, ffuf, Nuclei, mitmproxy, interact.sh, Semgrep, Sigma). Covers threat modeling (STRIDE/PASTA/VAST, MITRE ATT&CK), web-vuln testing, SAST, code audit, AI/LLM-app security, and detection engineering. Live-target testing is gated behind an authorization disclaimer; static analysis, code review, and threat modeling are always available. Cross-references the 5 existing defensive security plugins (
csrf-protection, xss-prevention, vulnerability-scanning, security-headers-configuration, defense-in-depth-validation) for remediation. Integrates 20 Aradotso dev-security skills across 5 grouped reference docs.
May 2026
Supply Chain Security (cross-cutting):
- dependency-upgrade expanded with Socket CLI integration — proactive malicious package detection, typosquatting alerts, and CI/CD security gates. New 418-line reference guide, 2 GitHub Actions templates, and expanded supply chain security comparison (3 tools)
- 31 skills now include "Secure Installation" guidance — contextually-tailored security sections across all high-risk skill categories (scaffolding, MCP/agent SDKs, multi-provider installs, Docker, CI/CD). Covers 8 Bun skills, 5 Nuxt skills, 6 Cloudflare skills, 4 AI/agent skills, and 8 frontend/tooling skills
- Supply chain security is now a first-class cross-cutting concern woven into the skill collection — not a standalone topic
February - April 2026
Full-Stack Frameworks:
- nuxt-v5 (v1.0.0) - Full Nuxt 5 support with 4 skills (core, data, server, production), 3 diagnostic agents, and interactive setup wizard
- threejs (v1.0.0) - 3D web graphics: scenes, geometries, shaders, animations, post-processing
Infrastructure:
- JSON schema validation - Automated plugin.json validation with CI support
- GitHub issue templates - Skill-specific issue templates for bug reports, feature requests, and submissions
Plugin Enhancements:
- mutation-testing - Added Bun native runner support
- dependency-upgrade - Added supply chain security content
December 2025 - January 2026
Frontend Expansion:
- nuxt-studio (v1.0.0) - Visual CMS for Nuxt Content with live preview, OAuth auth, and R2 storage integration
- maz-ui (v1.0.0) - 50+ Vue/Nuxt components with theming, i18n, form generation, and 14 composables
Developer Workflow:
- plan-interview (v2.0.0) - Adaptive interview-driven spec generation with autonomous quality review
- turborepo (v2.8.0) - Updated to official Vercel skill with enhanced monorepo build optimization
Mobile Development:
- react-native-skills (v1.0.0) - React Native & Expo best practices with performance optimization patterns
Enhanced Authentication:
- better-auth (v2.2.0) - Expanded to 18 framework integrations with 30+ authentication plugins
⚠️ 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 139 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: "85 of 139 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.
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 139 skills: 400+ documented errors prevented.
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)
- 2 specialized agents (agent-creator, plugin-validator)
Quick Steps
- Create skill directory in
plugins/
- Add
SKILL.md with YAML frontmatter
- Run
./scripts/sync-plugins.sh
- Submit pull request
See CONTRIBUTING.md and PLUGIN_DEV_BEST_PRACTICES.md for detailed guidelines.
Documentation
Links
Built with ❤️ by Claude Skills Maintainers
