Antigravity CLI (agy) Skill

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An AI agent skill for working with Google's Antigravity CLI (agy) -- the official successor to Gemini CLI.

What This Is

This is a skill file that teaches AI coding agents (Claude Code, Gemini CLI, Codex, Cursor, etc.) how to use the agy command-line tool effectively. It covers:

• Complete flag reference for agy v1.1.2
• Known v1.1.2 limitations (flags that don't exist yet)
• Gemini CLI to agy migration guide and flag mapping
• Best practices for automation and scripting
• Troubleshooting common issues

Background

Google announced at I/O 2026 (May 19) that Gemini CLI is transitioning to Antigravity CLI. Consumer/free users lose Gemini CLI access on June 18, 2026. The agy CLI is a Go binary that shares the same agent harness as the Antigravity IDE desktop application.

Files

File	Description
SKILL.md	Main skill definition -- install this in your AI tool
resources/cheat_sheet.md	Quick reference card with all flags and migration mapping
examples/usage_patterns.md	Common usage patterns with runnable examples

Installation

Copy or symlink SKILL.md to your AI tool's skill directory:

# Claude Code
cp SKILL.md ~/.claude/skills/antigravity-cli/SKILL.md

# Gemini CLI
cp SKILL.md ~/.gemini/skills/antigravity-cli/SKILL.md

# Or install via Universal Skills Manager if available

Status

This skill tracks locally installed agy v1.1.2.

Support

If this skill saves you time or money, you can help support its development. Any support is hugely appreciated. 🙏