bon-cop-bad-cop

bon-cop-bad-cop is a plugin for Claude Code from MadeByTokens/claude-code-plugins-madebytokens. Its manifest loads nothing; the 4 commands, 3 agents it bundles cost 90 tokens per session together, scanned A, original, MIT.

A three-agent test-driven development loop. Test-driven development, or TDD, means writing tests that describe expected behavior before or alongside the code.

In plain words
What is it for?
Use it to have one agent write tests, another implement the code, and a third review whether the implementation and tests are sound.
Why use it?
It separates test writing, coding, and review so each stage can challenge the others. The adversarial setup is intended to expose missing cases and unverified changes.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit Use it to have one agent write tests, another implement the code, and a third review whether the implementation and tests are sound.

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Install in Claude Code
/plugin marketplace add MadeByTokens/claude-code-plugins-madebytokens/plugin install bon-cop-bad-cop
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/MadeByTokens/claude-code-plugins-madebytokens

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 bon-cop-bad-cop

README.md
[![agentmods](https://agentmods.dev/badge/plugins/madebytokens/claude-code-plugins-madebytokens/bon-cop-bad-cop/github.svg)](https://agentmods.dev/plugins/madebytokens/claude-code-plugins-madebytokens/bon-cop-bad-cop)
Your own site
<a href="https://agentmods.dev/plugins/madebytokens/claude-code-plugins-madebytokens/bon-cop-bad-cop"><img src="https://agentmods.dev/badge/plugins/madebytokens/claude-code-plugins-madebytokens/bon-cop-bad-cop/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 bon-cop-bad-cop

Your own site · 80×15
<a href="https://agentmods.dev/plugins/madebytokens/claude-code-plugins-madebytokens/bon-cop-bad-cop"><img src="https://agentmods.dev/badge/plugins/madebytokens/claude-code-plugins-madebytokens/bon-cop-bad-cop.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 4 commands, 3 agents cost 90 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

bon-cop-bad-cop 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 8d 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

Copies of this mod

1 near-identical copy found in the catalogue:

plugins/bon-cop-bad-cop/.claude-plugin/plugin.json · 9 lines

What it actually says

{
  "name": "bon-cop-bad-cop",
  "version": "0.6.0",
  "description": "Three-agent adversarial TDD loop: Test Writer (bad cop), Code Writer (suspect), and Reviewer (good cop) work together while keeping each other honest",
  "author": {
    "name": "MadeByTokens"
  }
}
Contents

What it installs

The manifest is a name and a version. 4 commands, 3 agents travel with it, and installing the plugin installs all of them — 90 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. 8d ago First seen · 9 lines scan A eaaed9bed4ad

Subscribe to this mod's changes

bon-cop-bad-cop is a plugin published in the GitHub repository MadeByTokens/claude-code-plugins-madebytokens (2 stars, last pushed 7mo 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.

Related

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