adversarial-review

adversarial-review is a command for Claude Code from LovelaceLoom/gemini-plugin-cc. It costs 12 tokens per session (547 once invoked), scanned A, original, Apache-2.0.

A command that asks Gemini to challenge an implementation’s design, assumptions, tradeoffs, and likely real-world failure points. It reviews the approach without changing the code.

In plain words
What is it for?
Running a design-focused review and receiving Gemini’s findings without applying fixes.
Why use it?
It helps expose flawed decisions or hidden risks that a review focused only on coding mistakes may miss.

Command for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: names the AskUserQuestion tool.

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 gemini plugin — 3 skills, 9 commands, 1 agent, 3 hooks shipped together

Good fit Running a design-focused review and receiving Gemini’s findings without applying fixes.

Compare 6 commands from other repositories ↓
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 LovelaceLoom/gemini-plugin-cc
Claude Code
/plugin install gemini

Made for: Claude Code.

Or install gemini, the plugin that ships this one along with the rest of its 3 skills, 9 commands, 1 agent, 3 hooks.

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 adversarial-review

README.md
[![agentmods](https://agentmods.dev/badge/commands/lovelaceloom/gemini-plugin-cc/adversarial-review/github.svg)](https://agentmods.dev/commands/lovelaceloom/gemini-plugin-cc/adversarial-review)
Your own site
<a href="https://agentmods.dev/commands/lovelaceloom/gemini-plugin-cc/adversarial-review"><img src="https://agentmods.dev/badge/commands/lovelaceloom/gemini-plugin-cc/adversarial-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 adversarial-review

Your own site · 80×15
<a href="https://agentmods.dev/commands/lovelaceloom/gemini-plugin-cc/adversarial-review"><img src="https://agentmods.dev/badge/commands/lovelaceloom/gemini-plugin-cc/adversarial-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 12 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 547 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 $0.00012 $0.00547
Opus 5 $0.00006 $0.00273
Sonnet 5 $0.00002 $0.00109
Haiku 4.5 $0.00001 $0.00055

Measured 9d ago against content hash 4a4db02befe3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

adversarial-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 9d 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.

plugins/gemini/commands/adversarial-review.md · 55 lines

What it actually says

Run an adversarial Gemini review through the shared companion. Position it as a challenge review that questions the chosen implementation, design choices, tradeoffs, and assumptions. It is not just a stricter pass over implementation defects.

Raw slash-command arguments: $ARGUMENTS

Core constraint:

  • This command is review-only.
  • Do not fix issues, apply patches, or suggest that you are about to make changes.
  • Your only job is to run the review and return Gemini's output verbatim to the user.
  • Keep the framing focused on whether the current approach is the right one, what assumptions it depends on, and where the design could fail under real-world conditions.

Execution mode rules:

  • If the raw arguments include --wait, do not ask. Run in the foreground.
  • If the raw arguments include --background, do not ask. Run in a Claude background task.
  • Otherwise, estimate the review size as in /gemini:review and recommend background unless the diff is clearly tiny.
  • Use AskUserQuestion exactly once with the two options, recommended first:
    • Wait for results
    • Run in background

Argument handling:

  • Preserve the user's arguments exactly. Do not weaken the adversarial framing.
  • It supports working-tree review, branch review, and --base <ref>.
  • Unlike /gemini:review, it can take extra focus text after the flags.

Foreground flow:

  • Run:
node "${CLAUDE_PLUGIN_ROOT}/scripts/companion.mjs" adversarial-review "$ARGUMENTS"
  • Return the command stdout verbatim. Do not paraphrase, summarize, or add commentary.

Background flow:

  • Launch the review with Bash in the background:
Bash({
  command: `node "${CLAUDE_PLUGIN_ROOT}/scripts/companion.mjs" adversarial-review "$ARGUMENTS"`,
  description: "Gemini adversarial review",
  run_in_background: true
})
  • Do not call BashOutput. After launching, tell the user: "Gemini adversarial review started in the background. Check /gemini:status for progress."
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. 9d ago First seen · 55 lines · 12 tokens per session scan A 4a4db02befe3

Subscribe to this mod's changes

adversarial-review is a command published in the GitHub repository LovelaceLoom/gemini-plugin-cc (4 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 12 tokens to every session and 547 once invoked, about $0.0001 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 2026-08-31.