Anti-Gravity Skill & Plugin Installer

Install any skill, multi-skill collection, or native plugin into Anti-Gravity IDE with 100% fidelity. Zero truncation, zero omitted subfolders, zero broken dependencies.

Overview

Anti-Gravity IDE supports two primary customization constructs:

1. Agent Skills: Procedural runbooks and commands discovered across the 4 discovery roots (~/.gemini/config/skills/, .agents/skills/, ~/.gemini/antigravity/skills/, and ~/.agents/skills/).
2. Native Antigravity Plugins (The Ponytail Standard): Namespaced bundles (~/.gemini/config/plugins/<name>/ and .agents/plugins/<name>/) packaging skills, AGENTS.md rules, hooks, and MCP servers into an authoritative unit that is registered in ~/.gemini/config/config.json with direct toggle control ("enabled": true / false) inside the Antigravity Customization Settings UI.

Operating Protocol

A. Native Antigravity Plugin Installation (Ponytail Standard)

1. Detection: Automatically identifies plugin repositories by inspecting plugin.json, gemini-extension.json, or .antigravity-plugin/plugin.json, or via explicit -AsPlugin flag.
2. Authoritative Deployment:
   • Deploys full plugin package to Global (~/.gemini/config/plugins/<name>/) and Local (.agents/plugins/<name>/).
   • Ensures valid plugin.json declaring plugin identity at the root.
   • Ensures AGENTS.md is preserved at the plugin root for runtime rules discovery.
3. Customization Settings Control Registration:
   • Atomically registers plugins.<name> = { "enabled": true } into ~/.gemini/config/config.json.
   • Exposes native toggle switches in Antigravity IDE -> Settings -> Customizations -> Plugins, allowing users to enable or disable the entire plugin and all its capabilities instantly.
4. Bundled Skill Encapsulation (Zero Duplicate & Token Optimization):
   • Preserves bundled skills exclusively within plugins/<name>/skills/. Antigravity's plugin engine automatically discovers and mounts them with the plugin badge without duplicating them into standalone skills roots, eliminating context token waste and ensuring clean lifecycle control when toggled on/off in Settings.

B. Standalone Skill Installation

1. Source Parsing: Clones Git repository or resolves local directory.
2. YAML Normalization: Fixes unquoted colons, invalid block scalars, and ensures name: matches the directory name exactly.
3. Security & Privacy Scanning: Scans for leaked keys and tracking beacons.
4. Multi-Root Provisioning: Copies files with 100% fidelity to:
   • Global: ~/.gemini/config/skills/<name>/
   • Local: .agents/skills/<name>/
   • Antigravity Root: ~/.gemini/antigravity/skills/<name>/
   • User Agent Root: ~/.agents/skills/<name>/
5. Slash Command Registration: Automatically registers /<name> in the chat interface.

Reusable Automation Scripts

• Windows (PowerShell) - Standalone Skill:

  powershell -ExecutionPolicy Bypass -File "skills/agy-skill-installer/scripts/install-skill.ps1" -SourceUrlOrPath "<REPO_URL>"

• Windows (PowerShell) - Native Antigravity Plugin (Ponytail Standard):

  powershell -ExecutionPolicy Bypass -File "skills/agy-skill-installer/scripts/install-skill.ps1" -SourceUrlOrPath "<REPO_URL>" -AsPlugin

• Linux / macOS (Bash):

  bash skills/agy-skill-installer/scripts/install-skill.sh "<REPO_URL>" [--plugin]