antigravity-cli

Operate the Antigravity CLI (agy): plugins, auth, sandbox.

  • Coding-Agent
  • Antigravity
  • CLI
  • Auth
  • Plugins
  • Sandbox

Declared platforms: linux · macos · windows

Install
npx skills add 'https://github.com/NousResearch/hermes-agent/tree/main/optional-skills/autonomous-ai-agents/antigravity-cli'
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main · 24fd22bScanned 2026-09-15

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SKILL.md

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---name: antigravity-clidescription: "Operate the Antigravity CLI (agy): plugins, auth, sandbox."version: 0.2.0author: Tony Simons (asimons81), Hermes Agentlicense: MITplatforms: [linux, macos, windows]metadata:  hermes:    tags: [Coding-Agent, Antigravity, CLI, Auth, Plugins, Sandbox]    related_skills: [grok, codex, claude-code, hermes-agent]--- # Antigravity CLI (`agy`) Operator guide for the Antigravity CLI, invoked as `agy`. Run all `agy`commands through the Hermes `terminal` tool; inspect its config and logs with`read_file`. This skill is reference + procedure — it does not wrap a networkAPI, so there is nothing to authenticate from Hermes itself. ## When to Use - Installing, updating, or smoke-testing the `agy` binary- Driving non-interactive `agy --print` / `agy -p` one-shots- Debugging Antigravity auth, sandbox, permissions, or plugin state- Reading Antigravity settings, keybindings, conversations, or logs ## Mental model Antigravity has two layers — keep them distinct or the guidance will be wrong: 1. **Shell wrapper commands** — `agy help`, `agy install`, `agy plugin`,   `agy update`, `agy changelog`. Run these through the `terminal` tool.2. **Interactive in-session slash commands** — `/config`, `/permissions`,   `/skills`, `/agents`, etc. These only exist inside a running `agy` TUI   session, not on the shell wrapper. `agy help` shows the shell wrapper surface, NOT the in-session slash commands. ## Prerequisites - The `agy` binary on PATH. Verify through the `terminal` tool:  `command -v agy && agy --version`.- No env vars or API keys required by this skill — Antigravity manages its own  auth via the OS keyring / browser sign-in (see Authentication below). ## How to Run Invoke every `agy` command through the `terminal` tool. Examples: ```terminal(command="agy --version")terminal(command="agy help")terminal(command="agy plugin list")terminal(command="agy --print 'Summarize the repo in 3 bullets'", workdir="/path/to/project")``` For an interactive multi-turn TUI session, launch `agy` with `pty=true` (andtmux for capture/monitoring), the same pattern the `codex` / `claude-code`skills use. For one-shot smoke tests and scripted prompts, prefer`agy --print` (non-interactive). To inspect Antigravity's own files, use `read_file` on the paths under Corepaths below — do not `cat` them through the terminal. ## Delegation patterns `agy` is a coding-agent backend in the same family as `codex` / `claude-code`,so the same delegation shapes apply. Use these when handing real work (features,fixes, reviews, second opinions) to Antigravity rather than just smoke-testing. ### One-shot (preferred for scripted prompts and second opinions) ```terminal(command="agy -p 'Review this diff for bugs and security issues' --model 'Gemini 3.1 Pro (High)'", workdir="/path/to/repo", timeout=300)``` `-p` is non-interactive: it runs the prompt and exits. Pick the engine with`--model` (run `agy models` for the exact display strings, e.g.`'Gemini 3.1 Pro (High)'`, `'Claude Opus 4.6 (Thinking)'`). Add extra contextroots with repeatable `--add-dir`. ### Long / bounded runs (tests, builds, multi-file changes) Background it and get notified on completion, the same as the `codex` skill: ```terminal(command="agy -p 'Implement the change described in TASK.md and run the tests' --dangerously-skip-permissions", workdir="/path/to/repo", background=true, notify_on_complete=true)# then: process(action="poll"/"log"/"wait", session_id=<id>)``` ### Interactive multi-turn (PTY + tmux) For a conversational session, launch `agy -i` (or bare `agy`) under `pty=true`with tmux for `capture-pane` / `send-keys`, exactly the pattern documented inthe `codex` / `claude-code` skills. Resume later with `--continue` / `-c` or aspecific `--conversation <id>`. ### Parallel instances (batch sub-issue / worktree fan-out) Create one git worktree per task and launch an independent `agy -p` in each(background), then collect results — same worktree fan-out the `codex` skilluses for batch issue fixing. Bound concurrency to what the machine and yourreview capacity can absorb. ### Output + bounding caveat (differs from Claude Code) - `agy -p` returns **plain text** — there is **no `--output-format json`** and  no result envelope with `session_id` / cost / turn count. Parse stdout  directly; don't expect a JSON object.- There is **no `--max-turns`**. A print run is bounded by **`--print-timeout`**  (default `5m`). Raise it for long tasks: `--print-timeout 20m`. Pair with the  `terminal` `timeout=` so the outer call doesn't cut the run short. ### Orchestration boundary Antigravity is a **worker execution backend or third-opinion reviewer** — anexecution detail owned by the agent/profile running a task, NOT a first-classorchestration primitive. Do not put `agy` on a kanban board as its own card ortreat it as a coordination layer; route work through the normal task graph andlet the assigned worker choose `agy` (vs. codex/claude-code/direct tools) as itsmethod. Reach for it explicitly only when the user asks, when a worker isconfigured to wrap it, or when you want a Gemini-family cross-check againstanother agent's plan or diff. ## Core paths - Binary / entrypoint: `agy`- App data dir: `~/.gemini/antigravity-cli/`- Settings file: `~/.gemini/antigravity-cli/settings.json`- Keybindings file: `~/.gemini/antigravity-cli/keybindings.json`- Logs: `~/.gemini/antigravity-cli/log/cli-*.log`- Conversations: `~/.gemini/antigravity-cli/conversations/`- Brain artifacts: `~/.gemini/antigravity-cli/brain/`- History: `~/.gemini/antigravity-cli/history.jsonl`- Plugin staging: `~/.gemini/antigravity-cli/plugins/<plugin_name>/` ## Quick Reference ### Wrapper commands- `agy changelog`- `agy help`- `agy install`- `agy plugin` / `agy plugins`- `agy update` ### Useful flags- `--add-dir`- `--continue` / `-c`- `--conversation`- `--dangerously-skip-permissions`- `--print` / `-p`- `--print-timeout`- `--prompt`- `--prompt-interactive` / `-i`- `--sandbox`- `--log-file`- `--version` ### Plugin subcommands (`agy plugin --help`)- `list`, `import [source]`, `install <target>`, `uninstall <name>`,  `enable <name>`, `disable <name>`, `validate [path]`, `link <mp> <target>`,  `help` ### Install flags (`agy install --help`)- `--dir`, `--skip-aliases`, `--skip-path` ### In-session slash commands- **Conversation control:** `/resume` (`/switch`), `/rewind` (`/undo`),  `/rename <name>`, `/clear`, `/fork`, `/reset`, `/new`- **Settings & tools:** `/config`, `/settings`, `/permissions`, `/model`,  `/keybindings`, `/statusline`, `/tasks`, `/skills`, `/mcp`, `/open <path>`,  `/usage`, `/logout`, `/agents`- **Prompt helpers:** `@` path autocomplete, `esc esc` clears the prompt (when  not streaming), `!` runs a terminal command directly, `?` opens help ## Settings and permissions ### Common settings keys (`settings.json`)- `allowNonWorkspaceAccess`- `colorScheme`- `permissions.allow`- `trustedWorkspaces` ### Permission modes`request-review`, `always-proceed`, `strict`, `proceed-in-sandbox`. ### Sandbox behavior- `enableTerminalSandbox` is a boolean in `settings.json`; default `false`.- Launch-time overrides (`--sandbox`, `--dangerously-skip-permissions`) can  supersede persistent settings for the current session. ## Authentication behavior - The CLI tries the OS secure keyring first.- With no saved session, it falls back to browser-based Google sign-in.- Locally it opens the default browser; over SSH it prints an authorization URL  and expects the auth code pasted back.- `/logout` removes saved credentials. ## Plugins - Plugins stage under `~/.gemini/antigravity-cli/plugins/<plugin_name>/`.- They can bundle skills, agents, rules, MCP servers, and hooks.- `agy plugin list` returning no imported plugins is a valid empty state. ## Pitfalls - `agy help` shows wrapper commands, not interactive slash commands.- `agy --version` is the safe non-interactive version check; `agy version` is  interactive and can fail without a real TTY.- First place to look for failures: `~/.gemini/antigravity-cli/log/cli-*.log`  (read with `read_file`).- Don't confuse persistent JSON settings with launch-time overrides.- `~/.gemini/antigravity-cli/bin/agentapi` is a thin wrapper to `agy agentapi`.- On WSL, token storage is file-based, so auth issues are usually local-file /  session-state problems, not browser-only problems.- Workspace identity can depend on launch directory and the `.antigravitycli`  project marker.- `agy -p` prints plain text only — no `--output-format json`, no result  envelope. Don't try to parse a JSON object out of it (unlike `claude-code`).- Bound print runs with `--print-timeout` (default `5m`), not `--max-turns`  (which does not exist on `agy`). ## Verification Confirm the install is real and usable, all through the `terminal` tool (readfiles with `read_file`): 1. `terminal(command="command -v agy")`2. `terminal(command="agy --version")`3. `terminal(command="agy help")`4. `terminal(command="agy plugin list")`5. `read_file` on `~/.gemini/antigravity-cli/settings.json`6. `read_file` on the latest `~/.gemini/antigravity-cli/log/cli-*.log`7. If needed, `read_file` on `~/.gemini/antigravity-cli/keybindings.json` ## Support files - `references/cli-docs.md` — condensed notes from the getting-started, usage,  and features docs. 
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