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