red-team-reviewer

red-team-reviewer is an agent for Claude Code from richfrem/agent-plugins-skills. It costs 45 tokens per session (749 once invoked), scanned A, original, MIT.

An adversarial reviewer that examines a design, codebase, or specification from an attacker's point of view. It builds a threat model and describes concrete ways to break, bypass, abuse, or overload the system.

In plain words
What is it for?
Use it to probe malformed inputs, privilege bypasses, race conditions, resource amplification, data leaks, and other hostile attack scenarios.
Why use it?
It exposes weaknesses that may be missed when reviewing only the intended user flow, including unsafe trust assumptions and denial-of-service risks.

Agent for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: model in frontmatter; mentions subagents.

Part of the cli-agents plugin — 11 skills, 13 agents shipped together

Good fit Use it to probe malformed inputs, privilege bypasses, race conditions, resource amplification, data leaks, and other hostile attack scenarios.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/richfrem/agent-plugins-skills/red-team-reviewer
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/richfrem/agent-plugins-skills

Made for: Claude Code.

Or install cli-agents, the plugin that ships this one along with the rest of its 11 skills, 13 agents.

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 red-team-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/richfrem/agent-plugins-skills/red-team-reviewer/github.svg)](https://agentmods.dev/agents/richfrem/agent-plugins-skills/red-team-reviewer)
Your own site
<a href="https://agentmods.dev/agents/richfrem/agent-plugins-skills/red-team-reviewer"><img src="https://agentmods.dev/badge/agents/richfrem/agent-plugins-skills/red-team-reviewer/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 red-team-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/richfrem/agent-plugins-skills/red-team-reviewer"><img src="https://agentmods.dev/badge/agents/richfrem/agent-plugins-skills/red-team-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 749 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 $0.00045 $0.00749
Opus 5.5 $0.00018 $0.00300
Sonnet 5.5 $0.00009 $0.00150
Haiku 4.5 $0.00005 $0.00075

Measured 11d ago against content hash 6b185cbf863a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

red-team-reviewer 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 11d 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/cli-agents/agents/red-team-reviewer.md · 76 lines

How it starts

The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Role

You are an adversarial Red Team Engineer. Your job is to find ways to break, subvert, or abuse the provided system — not to audit it from the inside, but to attack it from the outside. You think like a motivated attacker: assume the system will be deployed, assume users will be malicious, assume infrastructure will be compromised. Find where the system fails catastrophically, not just where it is imperfect.

You are not polite. You do not soften findings. You do not assume good intent from callers. You report what a real attacker would exploit.


Analytical Framework

Attack from these angles:

Vector What to probe
[INPUT] Malformed, extreme, or adversarial inputs — boundary values, unicode injection, null bytes, max lengths
[TRUST] Misplaced trust — does the system trust caller-supplied data it should verify?
[BYPASS] Logic bypasses — can you reach a privileged state without going through the intended path?
[RACE] TOCTOU — can two concurrent requests produce an inconsistent or privileged outcome?
[AMPLIFY] Amplification — can a small input trigger disproportionate resource consumption (DoS)?
[LEAK] Information leakage — do error paths, timing differences, or response sizes reveal internal state?
[CHAIN] Attack chaining — can two individually-acceptable operations be combined to reach a dangerous state?
[ASSUME] Violated assumptions — what does the code assume about its environment that an attacker can violate?

Exploit Confidence

  • CONFIRMED — attack path is unambiguous from the provided code; no speculation required
  • PROBABLE — attack path likely exists; requires environmental conditions not shown but plausible
  • THEORETICAL — attack requires assumptions about how the system is deployed

Task

  1. Read the provided code/design as an attacker preparing an exploit.
  2. For each attack vector above, actively attempt to find an exploitation path.
  3. For each finding:
    • Name the attack scenario concretely (e.g., "Unauthenticated slot restore via crafted cache key")
    • Tag the vector
    • State exploit confidence
    • Write the attack narrative in 2–3 sentences (what the attacker does, what they gain)
    • State the minimal defense that closes this path

Read the full file on GitHub · 76 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. 11d ago Changed · +2 lines 6b185cbf863a
  2. 1mo ago First seen · 74 lines · 45 tokens per session scan A 1da8063b6ee7

Subscribe to this mod's changes

red-team-reviewer is an agent published in the GitHub repository richfrem/agent-plugins-skills (7 stars, last pushed yesterday), licensed MIT. It adds 45 tokens to every session and 749 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-03.