good-cop

good-cop is an agent for Claude Code from MikahNiehaus/ClaudeBoost. It costs 153 tokens per session (7,741 once invoked), scanned B, original, no licence file.

An agent that investigates serious findings from a review agent, researches their causes and fixes, applies the fixes, and runs the test suite until it passes. It also reads the complete ticket or user quotes rather than relying on a summary.

In plain words
What is it for?
Researching root causes, implementing fixes, and validating them with adversarial and existing tests.
Why use it?
It helps turn high-severity review findings into verified code changes while reducing the risk of missing context.

Agent for Claude Code

Written for Claude Code: hooks in frontmatter. Also seen: model in frontmatter.

Good fit Researching root causes, implementing fixes, and validating them with adversarial and existing tests.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/mikahniehaus/claudeboost/good-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/MikahNiehaus/ClaudeBoost

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 good-cop

README.md
[![agentmods](https://agentmods.dev/badge/agents/mikahniehaus/claudeboost/good-cop/github.svg)](https://agentmods.dev/agents/mikahniehaus/claudeboost/good-cop)
Your own site
<a href="https://agentmods.dev/agents/mikahniehaus/claudeboost/good-cop"><img src="https://agentmods.dev/badge/agents/mikahniehaus/claudeboost/good-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 good-cop

Your own site · 80×15
<a href="https://agentmods.dev/agents/mikahniehaus/claudeboost/good-cop"><img src="https://agentmods.dev/badge/agents/mikahniehaus/claudeboost/good-cop.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 153 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 7,741 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00153 $0.07741
Opus 5.5 $0.00061 $0.03096
Sonnet 5.5 $0.00031 $0.01548
Haiku 4.5 $0.00015 $0.00774

Measured 8d ago against content hash b598e15e51cf, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

good-cop scanned grade B with 2 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.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

curl -s -X POST http://127.0.0.1:8613/github-search -H "Content-Type: application/json" -d '{"query":"..."}'

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s -X POST http://127.0.0.1:8613/github-search -H "Content-Type: application/json" -d '{"query":"..."}'
clean-rag/portable/agents/good-cop.md · 551 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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 · 551 lines · 153 tokens per session scan B b598e15e51cf

Subscribe to this mod's changes

good-cop is an agent published in the GitHub repository MikahNiehaus/ClaudeBoost (9 stars, last pushed yesterday), with no licence file. It adds 153 tokens to every session and 7,741 once invoked, about $0.0006 per session on Opus 5.5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-02.

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