adversarial-testing

adversarial-testing is a plugin for Claude Code from jimmc414/claude-code-plugin-marketplace. Its manifest loads nothing; the 2 skills, 3 agents it bundles cost 176 tokens per session together, scanned A, original, MIT.

A plugin that creates adversarial tests: tests designed to challenge assumptions and expose bugs rather than only confirm expected behavior.

In plain words
What is it for?
Use it to generate adversarial test cases for software projects, including Python projects using pytest, and to investigate bugs, mutations, and quality gaps.
Why use it?
It helps reveal failures that ordinary, expected-case tests may miss by deliberately testing hostile or unusual inputs and situations.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit Use it to generate adversarial test cases for software projects, including Python projects using pytest, and to investigate bugs, mutations, and quality gaps.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add jimmc414/claude-code-plugin-marketplace
/plugin install adversarial-testing
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/jimmc414/claude-code-plugin-marketplace

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.

agentmods badge for adversarial-testing

README.md
[![agentmods](https://agentmods.dev/badge/plugins/jimmc414/claude-code-plugin-marketplace/adversarial-testing/github.svg)](https://agentmods.dev/plugins/jimmc414/claude-code-plugin-marketplace/adversarial-testing)
Your own site
<a href="https://agentmods.dev/plugins/jimmc414/claude-code-plugin-marketplace/adversarial-testing"><img src="https://agentmods.dev/badge/plugins/jimmc414/claude-code-plugin-marketplace/adversarial-testing/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-testing

Your own site · 80×15
<a href="https://agentmods.dev/plugins/jimmc414/claude-code-plugin-marketplace/adversarial-testing"><img src="https://agentmods.dev/badge/plugins/jimmc414/claude-code-plugin-marketplace/adversarial-testing.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 The manifest loads nothing itself; its 2 skills, 3 agents cost 176 tokens a session between them.
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

adversarial-testing 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.

plugins/adversarial-testing/.claude-plugin/plugin.json · 21 lines

What it actually says

{
  "name": "adversarial-testing",
  "version": "1.0.0",
  "description": "Adversarial test generation that finds real bugs by inverting the reward structure",
  "author": {
    "name": "jimmc414",
    "email": "[email protected]"
  },
  "homepage": "https://github.com/jimmc414/claude-code-plugin-marketplace/tree/main/plugins/adversarial-testing",
  "repository": "https://github.com/jimmc414/claude-code-plugin-marketplace",
  "license": "MIT",
  "keywords": ["testing", "adversarial", "bugs", "mutation", "quality", "pytest"],
  "category": "testing",
  "dependencies": {},
  "commands": "./commands/",
  "agents": "./agents/",
  "skills": "./skills/",
  "hooks": "./hooks/hooks.json",
  "mcpServers": "./.mcp.json"
}
Contents

What it installs

The manifest is a name and a version. 2 skills, 3 agents travel with it, and installing the plugin installs all of them — 176 tokens a session between them. Each is measured on its own page, and each can be installed alone.

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 · 21 lines scan A 6354610c89f6

Subscribe to this mod's changes

adversarial-testing is a plugin published in the GitHub repository jimmc414/claude-code-plugin-marketplace (4 stars, last pushed today), 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.

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