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antigravity-review

antigravity-review is a skill for Claude Code from Lykhoyda/ask-llm. It costs 67 tokens per session (630 once invoked), scanned A, original, MIT.

A code-review helper that asks Google Antigravity, an external coding tool, for a second opinion on your current changes.

In plain words
What is it for?
Use it when you want prioritized findings from Antigravity and have its command-line tool and connection set up.
Why use it?
It provides another review of staged, unstaged, and untracked changes, then checks the reported issues against the source code.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: names the AskUserQuestion tool; mentions Claude Code; mentions Codex.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the ask-llm plugin — 18 skills, 9 agents, 5 hooks, 1 MCP server shipped together

not rated 18repo +1 today A scan 67 tokens original MIT

Good fit Use it when you want prioritized findings from Antigravity and have its command-line tool and connection set up.

Compare 6 skills from other repositories ↓
View source ↗ Lykhoyda/ask-llm lykhoyda.github.io
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add Lykhoyda/ask-llm
Claude Code
/plugin install ask-llm

Made for: Claude Code.

Or install ask-llm, the plugin that ships this one along with the rest of its 18 skills, 9 agents, 5 hooks, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for antigravity-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/lykhoyda/ask-llm/antigravity-review/github.svg)](https://agentmods.dev/skills/lykhoyda/ask-llm/antigravity-review)
Your own site
<a href="https://agentmods.dev/skills/lykhoyda/ask-llm/antigravity-review"><img src="https://agentmods.dev/badge/skills/lykhoyda/ask-llm/antigravity-review/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for antigravity-review

Your own site · 80×15
<a href="https://agentmods.dev/skills/lykhoyda/ask-llm/antigravity-review"><img src="https://agentmods.dev/badge/skills/lykhoyda/ask-llm/antigravity-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 67 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 630 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00067 $0.00630
Opus 5 $0.00034 $0.00315
Sonnet 5 $0.00013 $0.00126
Haiku 4.5 $0.00007 $0.00063

Measured 12d ago against content hash ae9860fb8eac, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

antigravity-review scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

packages/claude-plugin/skills/antigravity-review/SKILL.md · 50 lines

How it starts

The opening of the file, as written. The whole thing — 50 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Portable contract

Gather the relevant staged, unstaged, and untracked code changes; build a bounded context brief; request an Antigravity review; verify each reported finding against source; and return only prioritized, source-supported findings. Preserve read-only intent, provider authentication errors, timeout behavior, and explicit failure disclosure.

Host adapters

Pi adapter

Call the native ask-antigravity tool and apply only the Portable contract section of ../../agents/antigravity-reviewer.md; ignore that file's frontmatter and Claude Code adapter.

Claude Code adapter

The existing detailed workflow below is the Claude Code adapter. Its Agent, MCP, hook, CLAUDE_PLUGIN_ROOT, and AskUserQuestion mechanics apply only on Claude Code; they do not override the Pi adapter above.

Antigravity Code Review

Review current code changes by delegating to the antigravity-reviewer agent — a subscription-backed second opinion via Google's Antigravity CLI (agy).

Prerequisites

This skill is experimental and requires:

  • agy installed and logged in once (run agy interactively to complete Google Sign-In).
  • The Antigravity MCP server registered, e.g. claude mcp add antigravity -- npx -y @ask-llm/antigravity-mcp.

It is one-shot (no multi-turn) and subscription-backed — it uses your Google AI Pro/Ultra plan, not per-token API billing. For routine review on a paid OpenAI/Gemini setup, prefer codex-review or gemini-review. To compare several providers at once, use multi-review.

Instructions

  1. Gather the diff to review:

    • Run git diff to get unstaged changes
    • Run git diff --cached to get staged changes
    • Combine both into a single diff

  2. If the diff is empty, inform the user there are no changes to review.

  3. Launch the antigravity-reviewer agent with the diff content. The agent handles the Antigravity prompt structure, confidence filtering, and output formatting. If the mcp__antigravity__ask-antigravity tool is unavailable, the agent will tell the user to register the Antigravity MCP server rather than failing silently.

Read the full file on GitHub · 50 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 50 lines · 67 tokens per session scan A ae9860fb8eac

Subscribe to this mod's changes

antigravity-review is a skill published in the GitHub repository Lykhoyda/ask-llm (18 stars, last pushed today), licensed MIT. It adds 67 tokens to every session and 630 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Claude CodeCode reviewaiclaudeclaude-aiclaude-mcpgemini
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