Antigravity for Claude Code

🛰️ Antigravity for Claude Code

Run the Antigravity CLI (Gemini) as a collaborating sub-agent, right inside Claude Code.

Claude conducts the judgement; Gemini does the heavy lifting — intelligent model routing across the SDLC.

⚡ Quick look

Claude stays the conductor; the bulk, token-heavy read ran on cheaper Gemini, and Claude verified the result.

💡 Why

*Generation is solved; verification, judgement, and direction are the craft.*

✨ What it does

- Routes work across the SDLC — Claude keeps the judgement calls; Antigravity handles scaffolding, test generation, first-pass review, and migrations under a shared AGENTS.md.
- Adds tools Claude lacks natively — live Google/web search, Vertex AI Search over your internal data, deep research, Cloud Logging. Claude reviews and re-checks the results.
- Hears audio, watches video — /antigravity:media delegates the perception to Gemini (natively multimodal, no local ffmpeg/Whisper stack): you get a timestamped digest while the full transcript is written to a file, so a 1-hour recording never lands in Claude's context.
- Cross-model verification — an independent, different-model opinion on your code.
- Background jobs — fire a long delegation, keep working, collect later.
- Internal fan-out — one delegation, and agy spawns its own subagents on the cheap side (dynamic define_subagent on agy ≥ 1.0.16; TypeName "self" + Role on any version); each leaves a readable trajectory you audit with agy-trace.
- Hand-off mode — /antigravity:handoff gives agy a whole, test-covered task; Claude reads nothing and verifies only by running the tests. The one delegation shape that measured cheaper than Claude Code alone on implementation work (0.58× per passing task; 0.43× on large tasks — and a loss on small ones), at the price of a 3–4×…