Invoking Antigravity Run Google's Antigravity CLI ( ) headless, then call as an orchestrated sub-agent on Google's harness (Gemini 3.5 Flash). Install, authenticate once, orchestrate. For the why behind any step — the 30 s timeout, the keyring fallback, the token format, network hosts, troubleshooting — read references/auth-internals.md. When to use - Orchestrating as a sub-agent: shell out, capture stdout, fold back. - Running Antigravity agents from a script, CI, or sandboxed container. - Wanting a second opinion from Google's harness alongside Claude. For interactive local use, skip this —…