/add-skill

name: add-skill
description: Import an existing skill from a GitHub repository URL into the current workspace. Use only when the user provides or references a GitHub URL/repo to fetch from (e.g., `/add-skill https://github.com/OpenHands/extensions/tree/main/skills/codereview` or "add the codereview skill from https://github.com/OpenHands/extensions/"). Handles fetching the skill files and placing them in .agents/skills/. This does not author new skills — to create a new skill from scratch (no source URL), use the skill-creator skill instead.

Add Skill

Import skills from GitHub repositories into the current workspace.

Workflow

When a user requests to add a skill from a GitHub URL:

1. **Parse the URL** to extract repository owner, name, and skill path 2. **Fetch the skill** using the bundled script. Run it from this skill's directory (the directory containing this SKILL.md file):

   python3 scripts/fetch_skill.py "<github-url>" "<workspace-path>"

3. **Verify** that SKILL.md exists in the destination 4. **Inform the user** the skill is now available

URL Formats Supported

• `https://github.com/owner/repo/tree/main/path/to/skill`
• `https://github.com/owner/repo/skill-name`
• `github.com/owner/repo/skill-name`
• `owner/repo/skill-name` (shorthand)

Example

User: `/add-skill https://github.com/OpenHands/extensions/tree/main/skills/codereview`

# Run the fetch script
python3 scripts/fetch_skill.py "https://github.com/OpenHands/extensions/tree/main/skills/codereview" "/path/to/workspace"

# Verify installation
ls /path/to/workspace/.agents/skills/codereview/SKILL.md

On Windows, use `python` if `python3` is not available and verify with PowerShell, for example: `Test-Path C:\path\to\workspace\.agents\skills\codereview\SKILL.md`.

Response: "✅ Added `codereview` to your workspace. The skill is now available."

Notes

• Installs workspace-locally into `<workspace>/.agents/skills/<skill-name>/`,

not globally; that workspace is where the skill becomes available

• Creates `.agents/skills/` directory if it doesn't exist
• Uses `GITHUB_TOKEN` for authentication (required for private repos)
• Warns before overwriting existing skills with the same name