# Skills & SubAgents & Plugins

## Resources
- [agentskills/agentskills](https://github.com/agentskills/agentskills) - Specification and documentation for Agent Skills
- [travisvn/awesome-claude-skills](https://github.com/travisvn/awesome-claude-skills) - A curated list of awesome Claude Skills, resources, and tools for customizing Claude AI workflows — particularly Claude Code

## Articles
- [GitHub Copilot now supports Agent Skills](https://github.blog/changelog/2025-12-18-github-copilot-now-supports-agent-skills/)
- [About Agent Skills](https://docs.github.com/en/copilot/concepts/agents/about-agent-skills)
- [Use Agent Skills in VS Code](https://code.visualstudio.com/docs/copilot/customization/agent-skills)
- [Extend your coding agent with .NET Skills](https://devblogs.microsoft.com/dotnet/extend-your-coding-agent-with-dotnet-skills/)

## Tools & Libraries

- [vercel-labs/skills](https://github.com/vercel-labs/skills) - The open agent skills tool - npx skills
- [numman-ali/openskills](https://github.com/numman-ali/openskills) - Universal skills loader for AI coding agents - npm i -g openskills
- [anthropics/skills](https://github.com/anthropics/skills) - Public repository for Agent Skills
- [vercel-labs/agent-skills](https://github.com/vercel-labs/agent-skills) - Vercel's official collection of agent skills
- [Aaronontheweb/dotnet-skills](https://github.com/Aaronontheweb/dotnet-skills) - Claude Code skills and sub-agents for .NET Developers
- [microsoft/skills](https://github.com/microsoft/skills) - Skills, MCP servers, Custom Agents, Agents.md for SDKs to ground Coding Agents
- [kepano/obsidian-skills](https://github.com/kepano/obsidian-skills) - Agent skills for Obsidian. Teach your agent to use Markdown, Bases, JSON Canvas, and use the CLI.
- [eugeniughelbur/obsidian-second-brain](https://github.com/eugeniughelbur/obsidian-second-brain) - Cross-CLI skill for Obsidian: turn your vault into a living AI-first second brain across Claude Code, Codex, Gemini, and OpenCode. 43 commands - now with /obsidian-architect to document your codebase, key-less web research, Google Calendar, and self-rewriting notes.
- [blader/humanizer](https://github.com/blader/humanizer) - Claude Code skill that removes signs of AI-generated writing from text
- [antonbabenko/terraform-skill](https://github.com/antonbabenko/terraform-skill) - Terraform & OpenTofu Skill for AI Agents - testing, modules, CI/CD, and production patterns
- [mattpocock/skills](https://github.com/mattpocock/skills) - Skills for Real Engineers. Straight from my .claude directory
- [multica-ai/andrej-karpathy-skills](https://github.com/multica-ai/andrej-karpathy-skills/) - A single CLAUDE.md file to improve Claude Code behavior, derived from Andrej Karpathy's observations on LLM coding pitfalls.
- [affaan-m/ECC](https://github.com/affaan-m/ECC) - The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
- [VoltAgent/awesome-claude-code-subagents](https://github.com/VoltAgent/awesome-claude-code-subagents) ⭐ - A collection of 100+ specialized Claude Code subagents covering a wide range of development use cases
- [wshobson/agents](https://github.com/wshobson/agents) ⭐ - Multi-harness agentic plugin marketplace for Claude Code, Codex, Cursor, OpenCode, GitHub Copilot, and Google 
- [addyosmani/agent-skills](https://github.com/addyosmani/agent-skills/) ⭐ - Production-grade engineering skills for AI coding agents.
- [sickn33/agentic-awesome-skills](https://github.com/sickn33/agentic-awesome-skills/) ⭐ - AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 2,005+ agentic skills. Includes CLI, local MCP, catalog, plugins, and Workbench.
- [obra/superpowers](https://github.com/obra/superpowers) ⭐ - An agentic skills framework & software development methodology that works.
- [ayghri/i-have-adhd](https://github.com/ayghri/i-have-adhd) - A skill to stop your coding agent from burying the answer. ADHD-friendly output.
- [JuliusBrussee/caveman](https://github.com/JuliusBrussee/caveman) - why use many token when few token do trick — Claude Code skill that cuts 65% of tokens by talking like caveman
- [DietrichGebert/ponytail](https://github.com/DietrichGebert/ponytail) - Makes your AI agent think like the laziest senior dev in the room. The best code is the code you never wrote.
- [nextlevelbuilder/ui-ux-pro-max-skill](https://github.com/nextlevelbuilder/ui-ux-pro-max-skill) - An AI skill that provides design intelligence for building professional UI/UX across multiple platforms.
- [virgiliojr94/book-to-skill](https://github.com/virgiliojr94/book-to-skill) - Turn any technical book PDF into a Claude Code skill — ready to study, reference, and use while you work.
- [VoltAgent/awesome-agent-skills](https://github.com/VoltAgent/awesome-agent-skills) ⭐ - A curated collection of 1000+ agent skills from official dev teams and the community, compatible with Claude Code, Codex, Gemini CLI, Cursor, and more.
- [johnpapa/ai-ready](https://github.com/johnpapa/ai-ready) - Agent Skill that analyzes your repo and generates the AI-ready configuration coding agents need — AGENTS.md, copilot-instructions, CI, issue templates, and more. Works in Claude Code, GitHub Copilot, Codex, and Cursor.