Run Antigravity in Agentastic
Google's terminal-first Antigravity client, using your existing settings across isolated worktrees.
What Agentastic adds
Give every task its own worktree, branch, or container.
Keep Antigravity's real CLI and your existing configuration.
Inspect the diff, run code review, test, and open a pull request.
Launch Antigravity
- Install the official CLI and sign in with your existing provider account.
- Open a repository in Agentastic. The connection is discovered from your PATH.
- Open Agent Home, choose Antigravity, describe the task, and select worktree, local, container, cloud, or remote mode.
Every run gets its own git worktree, so three tasks can share a repository without sharing a branch or a build directory.
What Antigravity supports
- Launch from a task description: supported
Type the task in Agent Home and Agentastic hands it to agy at launch, so the run starts from your prompt instead of an empty session.
- Unattended runs: supported
Antigravity can run without stopping for per-tool confirmation, which is what makes an overnight or scheduled run finish on its own.
- Plan before editing: supported
Start Antigravity in a read-only pass that proposes an approach without touching the working tree, then approve it and let the same session execute.
- Resume a session: supported
Reopen the last Antigravity session for a worktree and keep its history — useful when reviewing the diff turns up one more change.
- Structured chat: not supported
Antigravity runs in its own terminal UI inside Agentastic; it does not expose a protocol Agentastic can render as a structured chat.
- Code review: not supported
Antigravity writes the change; pair it with a review-capable agent for the pass before merge.
Agentastic reads these from Antigravity's own CLI rather than emulating them, and modes it does not support stay out of the picker. The provider reference lists the exact flags for each launch, and how to compare coding agents covers what changes when you switch harnesses.
Antigravity questions
Why run Antigravity in Agentastic instead of the Antigravity IDE?
Run it in Agentastic when you want Antigravity working beside other agents, such as Claude Code or Codex, on the same repository. Agentastic launches agy with the sign-in you already have and gives it a git worktree, terminal, diff view, and code review for each task.
How do I run multiple Antigravity sessions in parallel?
Start each task from Agent Home in worktree mode. Agentastic gives every run its own git worktree and terminal, so several Antigravity sessions can work in one repository without editing the same files.
How do I install Antigravity?
Run curl -fsSL https://antigravity.google/cli/install.sh | bash, then sign in the way Antigravity's documentation describes. Agentastic finds the agy command on your PATH when you open a repository.
Does Agentastic charge for Antigravity?
No. Agentastic is free and does not proxy model calls. It launches Antigravity with the credentials and plan you already use, so any usage is billed by your provider, not by Agentastic.