Claude Code Skills Collection

145 production-ready skills for Claude Code CLI

Version 3.9.0 | Last Updated: 2026-09-09

🔌 Platform / Harness Support

These plugins ship as Claude Code marketplace plugins (.claude-plugin/ manifests) and Codex CLI plugins (.codex-plugin/ manifests). Other harnesses consume the same skills via skills.sh — the cross-harness bridge.

Harness	Marketplace support	How to install
Claude Code	✅ Native (federated)	/plugin marketplace add secondsky/claude-skills, then /plugin install <name>@claude-skills
ZCode	✅ Native (reads .claude-plugin/ manifests)	Add this repo as a marketplace in the ZCode GUI
Codex CLI	✅ Native (federated)	codex plugin marketplace add secondsky/claude-skills, then /plugins in the Codex TUI
Cursor	⚠️ Adaptation needed	Cursor has an official marketplace, but expects .cursor-plugin/plugin.json (UI "Add to Cursor") this repo does not generate yet. Use skills.sh.
opencode	❌ No marketplace	npm plugins only (opencode.json plugin[]). Use skills.sh or vendor manually.
Gemini CLI	❌ No marketplace	gemini extensions install <url> only. Use skills.sh or vendor manually.

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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-d1@claude-skills
/plugin install tailwind-v4-shadcn@claude-skills
/plugin install gemini-cli@claude-skills

The authoritative catalog is .claude-plugin/marketplace.json, summarized in the category table below. A human-readable catalog is auto-generated in MARKETPLACE.md.

Codex CLI Installation

This repo generates .codex-plugin/ manifests and a .agents/plugins/marketplace.json for all 145 plugins, so Codex CLI can install them natively:

# Add the marketplace (from GitHub)
codex plugin marketplace add secondsky/claude-skills

# Browse and install plugins in the Codex TUI
#   /plugins          # opens the plugin browser
#   Space             # enable/disable a plugin

Skills are auto-discovered from each plugin's skills/ directory — the same SKILL.md files Claude Code uses. Claude-specific slash commands and subagents are not carried into Codex (use Codex's /import command for that).

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Installing with skills.sh

skills.sh is an open agent-skills registry and npx skills CLI (maintained by Vercel) that auto-detects your coding agent — Claude Code, Cursor, Codex, Copilot, Cline, opencode, and 70+ others — and installs each skill into the correct directory for that harness. It is the universal cross-harness path for harnesses without a marketplace (opencode, Gemini CLI) or where this repo's manifest format isn't generated yet (Cursor).

# Install one skill (auto-detects your agent)
npx skills add secondsky/claude-skills --skill cloudflare-d1

# Install several specific skills
npx skills add secondsky/claude-skills --skill cloudflare-d1 --skill tailwind-v4-shadcn

# Try a skill once without installing (pipes its prompt to your agent)
npx skills use secondsky/claude-skills@cloudflare-d1 | claude

# Target a specific agent explicitly
npx skills add secondsky/claude-skills --skill cloudflare-d1 --agent codex

# List what's installed, search, update, remove
npx skills ls -g
npx skills find cloudflare
npx skills update cloudflare-d1
npx skills remove cloudflare-d1

Bulk install note: npx skills add secondsky/claude-skills --all installs every discovered skill at once, but discovery walks skills.sh's standard container directories (skills/, .claude/skills/, …). This repo nests skills under plugins/<name>/skills/<skill>/, so --all may not pick up everything in one pass — install the skills you need by name with --skill, or run npx skills add secondsky/claude-skills -l to list what it finds.

Security scanning caveat

skills.sh runs every published skill through three scanners (Gen Agent Trust Hub, Socket, Snyk) plus an LLM-based meta-analyzer, and publishes the results at skills.sh/audits. The LLM analysis stage has been publicly shown (Trail of Bits, June 2026) to both miss genuinely malicious skills and flag unfamiliar version pins (e.g. newest dependency versions) as suspicious false positives. Treat skills.sh warnings as advisory, not authoritative — and verify against this repo's own version pins before acting on a warning.

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Repository Structure

This repository contains 145 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. Marketplace (recommended) - Install individual skills via /plugin install <name>@claude-skills
2. Cross-harness - Install into any supported agent with npx skills add secondsky/claude-skills --skill <name> (see Installing with skills.sh)

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Available Skills (145 Individual Skills)

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

Full Catalog: The authoritative list is .claude-plugin/marketplace.json; a human-readable version is generated in MARKETPLACE.md.

Categories

Category	Skills	Examples
tooling	27	turborepo, plan-interview, code-review, te