Our review
Manages AI agent skills by listing, installing, updating, and uninstalling skills from git repositories.
Strengths
- Centralized cache management for downloaded skills
- Supports both machine-level and agent-level storage
- Handles multiple git URL formats including branches
- Default path handling for Copilot and Claude agents
Limitations
- Only supports Copilot and Claude agents
- Requires a git repository URL for installation
- No built-in search or discovery for available skills
When you need to install, update, or manage skills for Claude or Copilot agents from git repositories.
If you need a graphical interface or integration with other AI agents like Cursor or Windsurf.
Security analysis
CautionThe skill manages third-party AI skills by downloading from arbitrary git URLs and deploying to agent-specific locations. While it does not itself execute destructive commands, it facilitates installation of untrusted instructions that could later be interpreted by an AI agent, posing a supply chain risk. The use of git clone and file copies is legitimate but warrants caution due to potential for abuse if sources are compromised.
- •Downloads content from user-specified git repositories, which could introduce malicious skills.
- •Writes files to user profile and project directories; a compromised skill could manipulate agent behavior.
- •Relies on external PowerShell scripts whose implementation is not provided, increasing audit risk.
Examples
List all my installed agent skills.Install the skill from https://github.com/owner/repo/tree/main/skills/my-skillShow details of the skill named 'my-skill'.name: skills-manager description: Get, List, install, update and uninstall agent skills. Use when user wants to Get, list, install, uninstall and upgrade skills. For install, user should provide a git repo URL. metadata: author: concao version: "1.0"
Skills Manager
This skill helps you Get, list, install, uninstall and update agent skills.
Skill Metadata Format
Skills use YAML frontmatter in Skill.md with the following structure:
---
name: skill-name # Required
description: Brief description # Required
license: Apache-2.0 # Optional
metadata: # Optional
author: example-org
version: "1.0"
---
If version is not specified, the system uses the file's last modified time as the version identifier.
Skills Storage Locations
Skills can be stored at two levels:
1. Machine-Level Cache (Centralized)
All downloaded skills are cached in: %USERPROFILE%\.skill\{skill-name}\
Cache Structure:
~/.skill/{skill-name}/
├── origin/ # Original files downloaded from remote repo
├── parsed/ # Processed skill files ready for installation
└── metadata.json # Skill metadata
metadata.json format:
{
"name": "skill-name",
"description": "Skill description",
"version": "1.0",
"lastUpdated": "2026-01-15T10:30:00Z",
"source": {
"repoUrl": "https://github.com/owner/repo",
"relativePath": "skills/my-skill",
"branch": "main"
}
}
2. Agent-Level Storage
Skills are installed to agent-specific paths based on scope:
| Scope | Agent | Path |
|-------|-------|------|
| Project | Copilot (default) | .github\skills\{skill-name} |
| Project | Claude | .claude\skills\{skill-name} |
| Personal | Copilot (default) | %USERPROFILE%\.copilot\skills\{skill-name} |
| Personal | Claude | %USERPROFILE%\.claude\skills\{skill-name} |
Default behavior:
- If user doesn't specify agent preference: use Copilot paths (
.github/skillsor~/.copilot/skills) - If user doesn't specify scope: default to project scope
Instructions
1. List Skills
List all installed skills across all scopes.
Steps:
- Scan all skill storage locations (project and personal)
- Read the
Skill.mdfile from each skill folder to extract name and description - Display results in a table format
Script: list-skills.ps1
2. Get Skill Details
Get detailed information about a specific skill by name.
Steps:
- Search for the skill in all installed locations
- Parse the
Skill.mdfile to extract name and full description - Display skill details including path and files
Script: get-skill.ps1 -SkillName "name"
3. Install Skills
Install a skill from a git repository URL.
Steps:
Step 3.1: Parse the Git Repository URL
When the user provides a git repository link, parse it to extract:
- Repository URL: The base git repo URL (e.g.,
https://github.com/owner/repo) - Relative Path: The path to the skill folder within the repo (e.g.,
skills/my-skill) - Branch (optional): If specified, use it; otherwise default to
mainormaster
Supported URL formats:
https://github.com/owner/repo/tree/branch/path/to/skillhttps://github.com/owner/repo/path/to/skillhttps://dev.azure.com/org/project/_git/repo?path=/path/to/skill- Raw git URL + relative path provided separately
Step 3.2: Download to Machine Cache
- Create cache structure:
~/.skill/{skill-name}/origin/and~/.skill/{skill-name}/parsed/ - Clone/download files to
origin/folder - Validate skill structure (must contain
Skill.mdorSKILL.md) - Parse skill metadata and copy processed files to
parsed/folder - Create
metadata.jsonwith name, description, version (from frontmatter or last modified time), and source info
Script: download-skill.ps1 -SkillName "name" -RepoUrl "url" -RelativePath "path" [-Branch "branch"]
Step 3.3: Ask User for Installation Scope
Prompt the user to choose:
Where would you like to install this skill?
- Project scope - Available only in this repository (default)
- Personal scope - Available across all your projects
Which scope do you prefer? (1 or 2, default: 1)
Step 3.4: Copy to Agent Path
Based on user's choice, copy from ~/.skill/{skill-name}/parsed/ to the appropriate agent path.
Script: install-skill.ps1 -SkillName "name" -Scope "project|personal" -Agent "copilot|claude"
Step 3.5: Confirm Installation
Success message:
✅ Skill "{skill-name}" installed successfully!
📁 Location: {target-path}
📄 Skill file: {target-path}/Skill.md
📦 Version: {version}
To use this skill, simply ask me about topics related to: {skill-description}
4. Upgrade Skills
Update an existing skill to the latest version from its source repository.
Steps:
Step 4.1: Read Metadata
- Read
~/.skill/{skill-name}/metadata.jsonto get source repo info - If metadata not found, prompt user for repo URL
Step 4.2: Update Origin Files
- Pull latest changes to
~/.skill/{skill-name}/origin/ - Re-parse skill files to
~/.skill/{skill-name}/parsed/ - Update
metadata.jsonwith new version info
Step 4.3: Compare and Update Installed Locations
- Compare version in cache with installed locations
- Copy updated files from
parsed/to all installed locations if newer - Remind user to reopen chat for changes to take effect
Script: upgrade-skill.ps1 -SkillName "name"
Step 4.4: Confirm Upgrade
Success message:
✅ Skill "{skill-name}" upgraded successfully!
📦 New Version: {version}
Updated locations:
- {location-1}
- {location-2}
5. Uninstall Skills
Remove an installed skill from a specific scope.
Steps:
Step 5.1: Locate the Skill
- Search for the skill in all installed locations
- Display where the skill is installed
Step 5.2: Ask User What to Remove
Prompt the user:
The skill "{skill-name}" is installed in the following locations:
.github/skills/{skill-name}(project)~/.copilot/skills/{skill-name}(personal)~/.skill/{skill-name}(machine cache)Which would you like to remove? (1/2/3/all)
Step 5.3: Remove the Skill
Script: uninstall-skill.ps1 -SkillName "name"
Step 5.4: Confirm Removal
Success message:
✅ Skill "{skill-name}" uninstalled from {location}.
Example Usage
User request examples:
- "List all installed skills"
- "Get details about sfi-handler skill"
- "Install the skill from https://github.com/myorg/skills/tree/main/sfi-handler"
- "Install skill from https://github.com/user/repo path: skills/my-skill to personal scope"
- "Upgrade my sfi-handler skill"
- "Uninstall the old-skill from my personal skills"
Troubleshooting
Common Issues
- Git not installed: Ensure git is available in PATH
- Permission denied: Run with appropriate permissions
- Invalid skill structure: Skill folder must contain Skill.md or SKILL.md
- Network issues: Check internet connectivity and repository access
Validation Checklist
- [ ] Repository URL is accessible
- [ ] Skill folder contains Skill.md or SKILL.md
- [ ] Target directory is writable
- [ ] No naming conflicts with existing skills
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