Antigravity

agentpack agy launches the Antigravity CLI (agy). Antigravity has no config-root override and shares auth and settings with the desktop app under your real profile, so agentpack leaves HOME and ~/.gemini untouched and delivers pack content as a workspace plugin instead.

What the launcher does

agy --add-dir <cwd>

agentpack injects --add-dir with the current working directory (where you invoked agentpack — not the pack root) when you don’t supply it. Extra arguments are forwarded:

agentpack agy
agentpack --yolo agy       # adds --dangerously-skip-permissions

The workspace plugin symlink

Pack content is staged into <staging>/modes/<mode>/agy/agentpack-bundle/ with a root plugin.json. Only agentpack agy creates the workspace symlink that exposes it:

./.agents/plugins/agentpack-bundle  ->  <staging>/.../agy/agentpack-bundle

This follows the same current-working-directory rule as Cursor’s --workspace. The symlink is tracked in a per-project overlay manifest for safe cleanup — bare sync and the other launchers never create it and remove any stale one. Add .agents/plugins/agentpack-bundle to .gitignore if you don’t want it tracked.

Staged layout

agy/agentpack-bundle/
  plugin.json
  skills/ agents/ commands/ rules/
  mcp_config.json      # remote MCP servers use serverUrl

Hooks are not staged

As with Grok, this is a verified limitation. Antigravity has a real hook engine and agy plugin validate statically accepts a Claude-shape hooks.json, but agy does not auto-load hooks from a workspace .agents/plugins/<name>/ overlay — a live session never fires a SessionStart hook from there, and the binary documents .agents/ as agent metadata, not a plugin source. With no config-root redirect, the only way to load hooks is agy plugin import/install into the real ~/.gemini (pollution). Antigravity’s hook support therefore stays unsupported.

Attribution

No verified first-class attribution-off setting. agentpack stages an always-apply plugin rule (rules/agentpack-no-attribution.md) as prompt-level guidance and does not modify your real profile.

Environment

Variable	Effect
`AGY_PATH`	Path to the `agy` binary
`AGENTPACK_STAGING_ROOT`	Override the staging root

See Environment Variables for the complete list.

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