🚀 Claude Code × Antigravity CLI Skill

Multi-agent skill for Claude Code that delegates heavy tasks to Google's Antigravity CLI agents — saving tokens while unlocking web search, image generation, codebase analysis, and 40+ scientific database integrations.

Migrating from gemini-cli? This skill is its direct successor. The Gemini CLI binary stops working on June 18, 2026 — swap in this skill and the agy binary to keep everything working.

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Why?

Claude Code is great at interactive coding. Antigravity CLI (agy) has exclusive tools Claude doesn't — Google Search, image generation, Chrome DevTools, and 40+ scientific databases. This skill lets Claude intelligently delegate to Antigravity when it makes sense, then process only the final output.

Result: You get the best of both AI agents while Claude uses fewer tokens.

You ──► Claude Code ──► "this needs web search" ──► agy -p "..." ──► result ──► Claude Code ──► You
             │                                                                         │
       keeps context lean                                              only processes final output

What Claude Code Can Delegate

Capability	Why Delegate?
🔍 Web Research	google_web_search grounding is more authoritative and real-time than Claude Code's DuckDuckGo
🎨 Image Generation	Antigravity has generate_image — Claude Code doesn't
🏗️ Codebase Architecture	Antigravity's codebase_investigator maps entire projects in one pass
🧬 Science Queries	40+ specialized skills: gnomAD, UniProt, PubMed, AlphaFold, ChEMBL...
🌐 Browser Debugging	Chrome DevTools Protocol for performance, a11y, network inspection
🔄 Multi-File Refactors	Runs in its own context — won't exhaust Claude's window
👀 Code Review	Different model = different perspective = catches different bugs
📝 Bulk Generation	Tests, docs, boilerplate without filling Claude's context

Quick Start

Prerequisites

• Claude Code installed
• Antigravity CLI (agy) installed and authenticated

Install

# Clone into Claude Code's skills directory
git clone git@github.com:SafeMantella/claude-code-agy-CLI-skill.git ~/.claude/skills/antigravity-cli

Claude Code auto-discovers skills from ~/.claude/skills/ on startup.

Set your binary path

The skill hardcodes the path to your agy binary. Find it and update SKILL.md:

# Find your agy binary
which agy || find ~/.local/bin /usr/local/bin /opt/homebrew/bin -name "agy" 2>/dev/null

Open SKILL.md and replace the path under ## Binary Location with your output above.

Verify

Start a new Claude Code session and try:

> Research the latest security advisories for Flask 3.x

Claude should automatically delegate this to Antigravity. You'll see it run agy -p "..." in its tool calls.

How It Works

Auto-Discovery

Claude Code reads all ~/.claude/skills/*/SKILL.md files at startup. The YAML frontmatter tells Claude when to activate the skill: