add-skill

Add Skill

Install agent skills from any git repository using the add-skill CLI.

When to Use

• Installing skills from GitHub or other git repositories
• Listing available skills from a repository before installation
• Managing skill installations across global and project scopes
• Tracking installed skills in a registry for updates

Quick Start

List Available Skills

npx add-skill vercel-labs/agent-skills --list

Install a Skill

# Install globally (all projects)
npx add-skill vercel-labs/agent-browser --skill agent-browser --global

# Install to current project
npx add-skill vercel-labs/agent-browser --skill agent-browser

Verify Installation

ls ~/.claude/skills/       # Global skills
ls .claude/skills/         # Project skills

Source Formats

CLI Options

Installation Locations

Popular Skill Sources

Skill Registry

Track installed skills in a registry for long-term maintenance. After each installation, update the registry to enable batch updates later.

For detailed registry setup, format, and workflows, see references/registry.md.

Quick Registry Update

# Set registry path
REGISTRY=~/.claude/skills/add-skill/registry.json  # Global

# Ensure directory exists
mkdir -p "$(dirname "$REGISTRY")"

# Initialize if needed
[ -f "$REGISTRY" ] || echo '{"$schema":"./registry.schema.json","version":"1.0","skills":{}}' > "$REGISTRY"

# Add skill entry
jq '.skills["agent-browser"] = {
  "source": "vercel-labs/agent-browser",
  "sourceUrl": "https://github.com/vercel-labs/agent-browser",
  "skillPath": "skills/agent-browser",
  "installedAt": "'$(date -u +%Y-%m-%dT%H:%M:%SZ)'"
} | .lastUpdated = "'$(date -u +%Y-%m-%dT%H:%M:%SZ)'"' \
"$REGISTRY" > tmp.json && mv tmp.json "$REGISTRY"

Additional Resources

Reference Files

• references/registry.md - Detailed registry setup, format, and maintenance workflows

Schema Files

• registry.schema.json - JSON Schema for registry validation

Notes

• The CLI auto-detects installed agents
• Skills are stored as SKILL.md files with YAML frontmatter
• Use --global for skills needed across all projects
• Use project-level for project-specific skills