Agent Skills: Reusable Plugins for AI Coding Agents

I use skills.sh to manage reusable agent skills. Skills are packages of instructions, scripts, and resources that AI coding agents load dynamically — think plugins for your agent. They follow the open Agent Skills spec and work across 40+ agents (Claude Code, Cursor, Copilot, Gemini CLI, etc.).

Managing Skills with npx skills⌗

The npx skills CLI is how you find, install, update, and remove skills.

Finding skills⌗

# Find skills interactively or by keyword
npx skills find
npx skills find "bayesian"

# List available skills in a repo before installing
npx skills add <owner/repo> --list

Installing skills⌗

# Install all skills from a repo (symlinked by default, easy to update)
npx skills add <owner/repo>

# Install globally (into ~/)
npx skills add <owner/repo> -g

# Install a specific skill only
npx skills add <owner/repo> -s skill-name

# Target a specific agent
npx skills add <owner/repo> -a claude-code

Updating and removing skills⌗

# Check for updates and apply them
npx skills check
npx skills update

# List and remove installed skills
npx skills list
npx skills remove <skill-name>

Scaffolding a new skill⌗

npx skills init my-skill

Lockfile-Based Installation⌗

If you want a reproducible skill set across machines, you can use a lockfile approach. Installing skills into a project populates a skills-lock.json that you can commit. On another machine, restore the same set with:

npx skills experimental_install

Skills I’ve Published⌗

These live in brojonat/llmsrules and can be installed with:

npx skills add brojonat/llmsrules

Third-Party Skills Worth Checking Out⌗