A Claude Code plugin that connects Claude Code to Google's Antigravity (agy) CLI and IDE tools. It includes skills for codebase questions and for writing prompts for Gemini models.
Claude Code
> /plugin marketplace add Vit129/agy-plugin-cc> /plugin install agy@agy-plugin-cc
Codex
$ npx skills add Vit129/agy-plugin-cc -a codex
Cursor
$ npx skills add Vit129/agy-plugin-cc -a cursor
Gemini CLI
$ npx skills add Vit129/agy-plugin-cc -a gemini-cli
GitHub Copilot
$ copilot plugin marketplace add Vit129/agy-plugin-cc$ copilot plugin install agy@agy-plugin-cc
OpenCode
$ npx skills add Vit129/agy-plugin-cc -a opencode
Windsurf
$ npx skills add Vit129/agy-plugin-cc -a windsurf
Unofficial community project. Not affiliated with, sponsored or endorsed by Google. "Antigravity" and "Google" are trademarks of Google LLC.
A Claude Code plugin that integrates Google's Antigravity (agy) CLI and Antigravity IDE developer tools into Claude Code.
This companion extension follows the same design patterns as codex-plugin-cc, providing full job tracking, background execution, code review, and a session-aware stop-time review gate for Google Antigravity workflows.
(For OpenAI Codex CLI, see the counterpart: agy-plugin-codex).
The Antigravity CLI must be installed and authenticated before using this plugin.
Install agy CLI:
Mac/Linux:
curl -fsSL https://antigravity.google/cli/install.sh | bash
Windows PowerShell:
irm https://antigravity.google/cli/install.ps1 | iex
Windows CMD:
curl -fsSL https://antigravity.google/cli/install.cmd -o install.cmd && install.cmd && del install.cmd
Authenticate with your Google account:
agy auth
In Claude Code:
/plugin marketplace add Vit129/agy-plugin-cc
/plugin install agy@agy-plugin-cc
/reload-plugins
Updates: open /plugin → Marketplaces → agy-plugin-cc and turn on auto-update; new versions arrive when a session starts.
Manual update: /plugin marketplace update agy-plugin-cc, then /reload-plugins.
/agy:setupCheck whether agy is installed and optionally toggle the stop-time review gate.
/agy:setup
/agy:setup --enable-review-gate
/agy:setup --disable-review-gate
/agy:agy [prompt]Run a one-shot agy task directly.
/agy:agy "Explain how the authentication flow works in this repo"
/agy:agy --resume "Keep going"
/agy:agy --sandbox "What files changed in the last commit?"
/agy:rescue [task]Delegate investigation, fixes, or follow-up work to agy. Checks for a resumable previous session before starting.
/agy:rescue "Fix the memory leak in the WebSocket connection handler"
/agy:rescue "Triage the slow query logs" --background
/agy:rescue "Keep going" --resume
/agy:rescue "Start over from scratch" --fresh
/agy:rescue "Read-only audit of the auth module" --sandbox
Flags:
| Flag | Description |
|---|---|
--background | Run in the background; check progress with /agy:status |
--resume | Continue the most recent agy conversation |
--fresh | Force a new conversation, ignoring previous context |
--sandbox | Run agy with terminal restrictions (read-only mode) |
/agy:reviewRun a code review — agy examines the current git changes and reports findings.
/agy:review
/agy:review --wait
/agy:review --background
/agy:review --scope branch
/agy:review --base main
Scopes: auto (default), working-tree, branch
/agy:adversarial-review [focus]Run an adversarial review — agy tries to find the strongest reasons the change should not ship.
/agy:adversarial-review
/agy:adversarial-review "focus on the auth boundary"
/agy:adversarial-review --base main --wait
/agy:status [job-id]Show active and recent agy jobs for this repository.
/agy:status
/agy:status task-abc123
/agy:status task-abc123 --wait
/agy:status --all
/agy:result [job-id]Show the stored output for a finished job.
/agy:result
/agy:result task-abc123
/agy:cancel [job-id]Cancel an active background job.
/agy:cancel
/agy:cancel task-abc123
When enabled, agy runs a review before each session ends and blocks if it finds issues.
/agy:setup --enable-review-gate # turn on
/agy:setup --disable-review-gate # turn off
When a session ends with the gate enabled:
agy reviews the previous Claude responseALLOW: — the session closes normallyBLOCK: — the session is blocked with the reasonplugins/agy/
├── .claude-plugin/plugin.json # plugin metadata (v1.1.0)
├── agents/agy-rescue.md # agy:agy-rescue subagent
├── commands/ # slash commands
│ ├── agy.md # /agy:agy
│ ├── rescue.md # /agy:rescue
│ ├── setup.md # /agy:setup
│ ├── review.md # /agy:review
│ ├── adversarial-review.md # /agy:adversarial-review
│ ├── status.md # /agy:status
│ ├── result.md # /agy:result
│ └── cancel.md # /agy:cancel
├── hooks/hooks.json # SessionStart / SessionEnd / Stop
├── prompts/ # prompt templates
│ ├── review.md
│ ├── adversarial-review.md
│ └── stop-review-gate.md
├── scripts/
│ ├── agy-companion.mjs # main runtime (9 subcommands)
│ ├── session-lifecycle-hook.mjs # SessionStart / SessionEnd handler
│ ├── stop-review-gate-hook.mjs # Stop hook handler
│ └── lib/ # modular library
│ ├── agy.mjs # agy CLI wrapper
│ ├── args.mjs # argument parsing
│ ├── fs.mjs # file utilities
│ ├── git.mjs # git review target resolution
│ ├── job-control.mjs # job queries & enrichment
│ ├── process.mjs # process utilities
│ ├── render.mjs # output rendering
│ ├── state.mjs # persistent job state
│ ├── tracked-jobs.mjs # job lifecycle tracking
│ └── workspace.mjs # git root resolution
└── skills/
├── agy-cli-runtime/SKILL.md # internal runtime contract
├── agy-result-handling/SKILL.md # result presentation guidance
└── gemini-3-prompting/SKILL.md # prompt composition guidance
See CHANGELOG.md.
This is a Claude Code plugin package, not a local web application. npm start / make start runs the isolated package preview gate: syntax checks, unit tests, and npm pack --dry-run. There is no local GUI dev server; review runtime behavior by installing into a separate test Claude Code profile. The release script updates every semver/build surface, commits the candidate, and runs npm run release:check on that exact commit before it tags or pushes. CI runs the same gate on pull requests and pushes to main.
Developed and maintained by Vit129 and Claude (Anthropic).
Apache License 2.0 — see LICENSE and NOTICE. Parts of the design
and scripts are derived from codex-plugin-cc (Copyright 2026 OpenAI,
Apache-2.0), credited in NOTICE. Releases up to
v1.5.1 were published under MIT and remain available under those terms (LICENSE-MIT). Keep
LICENSE and NOTICE when you redistribute, and mark the files you change.
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