What is herdr-adversarial-review marketplace?

A Claude Code plugin that performs adversarial code reviews using a second model through CLIProxyAPI and herdr. Adversarial review means actively looking for flaws instead of simply approving the work.

Use it when you want a second-model review of code changes in Claude Code.

It adds an independent challenge to the first review or implementation, which can help uncover overlooked problems.

herdr-adversarial-review marketplace

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo

git clone --depth 1 https://github.com/overflowy/herdr-adversarial-review

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/overflowy/herdr-adversarial-review/marketplace/github.svg)](https://agentmods.dev/plugins/overflowy/herdr-adversarial-review/marketplace)

Your own site

<a href="https://agentmods.dev/plugins/overflowy/herdr-adversarial-review/marketplace"><img src="https://agentmods.dev/badge/plugins/overflowy/herdr-adversarial-review/marketplace/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.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/overflowy/herdr-adversarial-review/marketplace"><img src="https://agentmods.dev/badge/plugins/overflowy/herdr-adversarial-review/marketplace.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

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.

Security

Grade A, and why

herdr-adversarial-review marketplace 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 2mo 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.

.claude-plugin/marketplace.json · 17 lines

What it actually says

{
  "name": "herdr-adversarial-review",
  "owner": {
    "name": "overflowy"
  },
  "description": "Adversarial code review skill for Claude Code, powered by a second model via CLIProxyAPI + herdr",
  "plugins": [
    {
      "name": "adversarial-review",
      "source": {
        "source": "github",
        "repo": "overflowy/herdr-adversarial-review"
      }
    }
  ]
}

Contents

The plugins it lists here

This marketplace lists 1 plugin kept in the same repository. Each has its own page, its own measurements and its own install command.

Plugin adversarial-review 1 inside A not measured

Files

What ships with it

1 file beside marketplace.json in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

plugin.json 287 B

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.

2mo ago First seen · 17 lines scan A c58697271299

Subscribe to this mod's changes

herdr-adversarial-review marketplace is a plugin published in the GitHub repository overflowy/herdr-adversarial-review (10 stars, last pushed 2mo ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.

Claude Code Code review adversarial-review claude gpt herdr skill

herdr-adversarial-review marketplace next to 6 plugins from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
herdr-adversarial-review marketplaceoverflowy/herdr-adversarial-review	Plugin	10	2mo ago	MIT	A	—	Claude Code
react-doctormillionco/react-doctor	Plugin	15k	yesterday	none	A	—	Cursor
security-toolssiva01c/claude-plugins	Plugin	16	yesterday	MIT	A	—	Claude Code
quality-toolssiva01c/claude-plugins	Plugin	16	yesterday	MIT	A	—	Claude Code
adversarial-reviewrobertoecf/adversarial-review	Plugin	12	1mo ago	MIT	A	—	Claude Code
omniforgenexiouscaliver/OmniForge	Plugin	4	1mo ago	MIT	A	—	Claude Code
typo3-conformancenetresearch/typo3-conformance-skill	Plugin	6	7d ago	none	A	—	Claude Code