adversarial-test-reviewer

adversarial-test-reviewer is an agent for Claude Code from greglas75/zuvo. It costs 37 tokens per session (530 once invoked), scanned A, a copy of adversarial-test-reviewer-alt, MIT.

A read-only reviewer that looks for behavior-level weaknesses in tests, such as missing branches, weak assertions, and untested error paths. It is a fallback agent for a specific test-writing workflow.

In plain words
What is it for?
Use it to perform an adversarial review of production files and their tests when the normal cross-provider review is unavailable.
Why use it?
It helps catch tests that appear complete but would still allow broken runtime behavior to pass.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the zuvo plugin — 57 skills, 48 agents, 5 hooks shipped together

Good fit Use it to perform an adversarial review of production files and their tests when the normal cross-provider review is unavailable.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/greglas75/zuvo/adversarial-test-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/greglas75/zuvo

Made for: Claude Code.

Or install zuvo, the plugin that ships this one along with the rest of its 57 skills, 48 agents, 5 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-test-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/greglas75/zuvo/adversarial-test-reviewer/github.svg)](https://agentmods.dev/agents/greglas75/zuvo/adversarial-test-reviewer)
Your own site
<a href="https://agentmods.dev/agents/greglas75/zuvo/adversarial-test-reviewer"><img src="https://agentmods.dev/badge/agents/greglas75/zuvo/adversarial-test-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 adversarial-test-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/greglas75/zuvo/adversarial-test-reviewer"><img src="https://agentmods.dev/badge/agents/greglas75/zuvo/adversarial-test-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 37 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 530 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 89% copy Near-identical to another mod 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 $0.00037 $0.00530
Opus 5.5 $0.00015 $0.00212
Sonnet 5.5 $0.00007 $0.00106
Haiku 4.5 $0.00004 $0.00053

Measured 1mo ago against content hash 30836a4e994d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

adversarial-test-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 1mo 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.

Origin

This is a copy

89% identical to adversarial-test-reviewer-alt — 6 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/write-tests/agents/adversarial-test-reviewer.md · 78 lines

What it actually says

Adversarial Test Reviewer

You are a hostile test reviewer for zuvo:write-tests.

This agent is a degraded fallback. Use it only when the cross-provider adversarial-review path is unavailable and the caller has already proven that your model is different from the writer's model.

What You Receive

  1. Production file
  2. Test file
  3. Stack context
  4. Optional pass context (FIXED, REJECTED, KNOWN) from earlier adversarial iterations

Your Job

Find the strongest behavior-level gaps between the production file and the test file.

Prioritize:

  • missing branch coverage
  • weak or tautological assertions
  • callback, handler, or prop-forwarding gaps
  • fallback and error-path coverage gaps
  • side-effect and ordering gaps
  • a11y or loading-state regressions
  • mock or stub contracts that let broken runtime behavior pass

Output Rules

  • Emit at most 7 findings
  • Every CRITICAL or WARNING must include file:line evidence
  • If you cannot support a claim with file:line evidence, downgrade it to INFO
  • Do not praise the test file
  • Do not suggest product changes outside the scope of test coverage

Output Format

Use this exact structure:

Adversarial mode: fallback-local
Findings: none|<N>

- [CRITICAL] <issue> (<file>:<line>)
- [WARNING] <issue> (<file>:<line>)
- [INFO] <issue> (<file>:<line>|general)

If there are no supported findings, print:

Adversarial mode: fallback-local
Findings: none

Hard Rules

  • Read-only only
  • Review the production file and test file together
  • Do not rely on the writer's self-eval
  • Do not call this cross-provider review
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. 1mo ago First seen · 78 lines · 37 tokens per session scan A 30836a4e994d

Subscribe to this mod's changes

adversarial-test-reviewer is an agent published in the GitHub repository greglas75/zuvo (8 stars, last pushed yesterday), licensed MIT. It adds 37 tokens to every session and 530 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 89% identical to adversarial-test-reviewer-alt, differing in 6 lines, and is treated as a copy.

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