Antigravity CLI

Use the installed agy CLI as an external coding agent. The bundled client returns a task ID immediately and keeps a background worker available for follow-ups. It runs each turn with official streaming JSON input/output and resumes the exact Antigravity conversation on the next turn. Waiting for the process and stderr to finish makes permission denials and partial-output timeouts visible; each follow-up incurs CLI startup time.

Delegate when the user requests Antigravity or another agent can add value that you can verify. Keep routine work with the supervising agent when the extra startup and review time would outweigh that benefit.

Antigravity CLI must already be installed and authenticated. Run scripts/agy.py with the project's Python 3.12+ interpreter. The helper uses only the standard library; when the project has no Python environment, uv run --python 3.12 <script> ... also works. Resolve the script relative to this skill, not the project receiving the task.