MCP 服务器

agy-plugins

MCP server for managing AI skills and tools from GitHub marketplaces, enabling discovery, installation, removal, and auto-updates via natural language or commands.

README

From <a href="https://www.fledgeling.app">Fledgeling</a>. Built and used daily by <a href="https://github.com/lprhodes">Luke Rhodes</a>; shipped when it's earned it.

What this is

Think of agy-plugins as an App Store and auto-updater for your Antigravity AI assistant (agy).

When developers share AI skills and tools (like code reviewers, UX audit helpers, or project builders), they publish them in collections called plugin marketplaces on GitHub. Without a manager, getting those skills into your AI assistant means copying folders by hand, running git commands, and hoping you don't download gigabytes of files you'll never use.

agy-plugins takes care of all of that for you. It downloads only the specific skills you pick, links them directly into your AI assistant, and automatically updates them in the background so you're always on the newest version.

How to use it

You can use agy-plugins through a visual keyboard-friendly menu, by chatting naturally with your AI assistant, or through quick terminal commands.

Method 1: The Visual Interactive Manager

If you prefer browsing and toggling skills visually with your keyboard:

[!IMPORTANT] Run this in its own separate Terminal tab or window.

Open a fresh terminal window or tab (in Terminal, iTerm, or Ghostty) to run this command. Do not run it inside an active agy chat session; running an interactive full-screen visual menu inside an existing AI chat prompt will cause the two screens to overlap.

# In a fresh terminal tab:
agy-plugin
# or
node /Users/lukerhodes/Dev/agy-plugins/bin/agy-plugins.js

How to navigate the visual menu

1, 2, 3, 4: Switch between Explore Skills, Marketplaces, Installed Tools, and the Doctor health-check.
↑ / ↓ Arrow Keys: Move up and down the list.
Space or i: Install or uninstall the highlighted skill.
/: Type to instantly search for any skill by keyword.
u: Pull the latest updates from GitHub right now.
q: Exit the menu.

Method 2: Let your AI handle it (MCP)

You can connect agy-plugins directly to your AI assistant using one command. Once connected, you can just ask your assistant in plain English to install or manage tools for you (e.g. "Install the design-review skill from fledgeling-plugins").

To add it to Antigravity, run this single line in your terminal:

agy mcp add agy-plugins "node /Users/lukerhodes/Dev/agy-plugins/bin/agy-plugins.js mcp"

Everything you can do in the visual menu, your AI assistant can now do for you automatically:

Discover and search for new skills across all your added marketplaces.
Install or remove skills with one sentence.
Add new marketplace collections from GitHub.
Check the health of your installed tools and automatically repair broken links.

Method 3: Command-Line Shortcuts

agy-plugins gives you simple, familiar commands (matching the standard skills.fledgeling.app conventions):

1. Adding Marketplaces

To add a collection of skills from GitHub:

# Add a marketplace from GitHub
agy-plugin marketplace add fledgeling-co/fledgeling-plugins
agy-plugin marketplace add DiologIR/diolog-plugins

# List all marketplaces you've registered
agy-plugin marketplace list

# Update all marketplaces (or a specific one)
agy-plugin marketplace update
agy-plugin marketplace update fledgeling-plugins

2. Installing & Removing Skills

Once a marketplace is added, install only the specific skills you want:

# Install a skill from a specific marketplace
agy-plugin install trawl@fledgeling-plugins
agy-plugin install design-review@fledgeling-plugins
agy-plugin install create-swe-project@fledgeling-plugins

# Or install by name directly
agy-plugin install trawl

# Remove a skill when you no longer need it
agy-plugin uninstall trawl

# See all skills currently available or installed
agy-plugin list
agy-plugin list --installed

3. Health Diagnostics (Doctor)

Check whether any tools have broken links or missing dependencies:

# Run the health check and automatically repair any issues
agy-plugin doctor --fix

Why it's fast and clean

Zero third-party code packages: Built using standard Node.js built-ins. Nothing extra gets installed on your Mac, so it starts instantly.
Saves disk space: Traditional git clones download the entire history of every project in a repository. agy-plugins uses smart partial downloads, which cuts disk usage by around 95%.
Instant updates: Because skills are linked directly into your assistant, any updates from GitHub take effect immediately; no need to restart your AI tools.
Built-in health checker (Doctor): If a file gets moved or a tool needs a missing program to run, the doctor catches it and tells you in plain words how to resolve it.

Design & Verification

[Icon Audit Sheet](file:///Users/lukerhodes/Dev/agy-plugins/assets/audit.html): Measured contact sheet auditing the Tahoe gel-glass icon across 6 size scales down to 16px.
[Structural Evals & Ledger](file:///Users/lukerhodes/Dev/agy-plugins/EVALS.md): Benchmark comparisons on download speeds, memory footprint, and token budgets.