---
name: reference_antigravity_agy_not_headless
description: Antigravity CLI agy.exe is the IDE embedded agent (no stdout, SQLite store) — NOT a headless CLI. The agy skill uses @google/gemini-cli, not agy.exe. Don't reinstall agy.exe expecting a headless tool.
metadata:
  type: reference
---

The `agy.exe` installed by Google's Antigravity CLI (`%LOCALAPPDATA%\agy\bin\agy.exe`, installer `https://antigravity.google/cli/install.ps1`) is the IDE's embedded agent, **NOT a usable headless CLI** on this fleet. Even v1.0.6's advertised `-p/--print` produces ZERO stdout and hangs when invoked non-interactively from the Bash/PowerShell tool harness — it writes only to a SQLite conversation store. First found 2026-06-05 (`session-logs/2026-06-05-mike-gururmm-platform-day.md` line 35); **re-confirmed 2026-06-06** after the GURU-5070 reinstall (reinstalled agy.exe and walked straight back into the same no-output/hang symptom).

The `agy` SKILL (despite the name) routes to the official **`@google/gemini-cli`** (`gemini`, npm global) — that IS the real headless second-opinion tool (Google OAuth, no API key), resolved via `identity.json .gemini.binary`. Grok (`ask-grok.sh`) is the other working second model. Both were verified returning `OK` on 2026-06-06.

**June 18 sunset — likely a non-issue for ACG.** Google is sunsetting gemini-cli's free/unpaid OAuth quota on **2026-06-18**, but Mike has a **paid Gemini account**, so the plan is to **stay on gemini-cli** (do NOT migrate to Antigravity). The bulletproof form is to auth gemini-cli with a paid **Gemini API key** (`GEMINI_API_KEY`) rather than the free OAuth quota — that path is unaffected by the OAuth-CLI sunset regardless of how the consumer tiers shake out, and is more stable for headless use. (Sources disagree on whether paid Pro/Ultra OAuth is also cut, so the API-key path is the safe bet.) **Do NOT reinstall agy.exe expecting it to work headless.** Related: [[feedback_agy_review_not_readonly]].