defect-sweeper

defect-sweeper is an agent for coding agents from masanami/claude-harness. It costs 72 tokens per session (4,344 once invoked), scanned A, original, no licence file.

A review agent that checks an entire code change for one specified class of defects. It works independently from the implementation and only finds and reports problems.

In plain words
What is it for?
Use it to sweep a diff for a particular defect class and produce findings without changing the code.
Why use it?
It gives a code review a focused second pass, so one type of defect is less likely to be overlooked.

Agent

Part of the claude-harness plugin — 22 skills, 22 agents, 1 hook shipped together

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.

agentmods
npx agentmods add agents/masanami/claude-harness/defect-sweeper
Clone the repo
git clone --depth 1 https://github.com/masanami/claude-harness

Or install claude-harness, the plugin that ships this one along with the rest of its 22 skills, 22 agents, 1 hook.

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 defect-sweeper

README.md
[![agentmods](https://agentmods.dev/badge/agents/masanami/claude-harness/defect-sweeper.svg)](https://agentmods.dev/agents/masanami/claude-harness/defect-sweeper)
Your own site
<a href="https://agentmods.dev/agents/masanami/claude-harness/defect-sweeper"><img src="https://agentmods.dev/badge/agents/masanami/claude-harness/defect-sweeper.svg" alt="Measured on agentmods" height="20"></a>
Per session 72 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 4,344 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00072 $0.04344
Opus 5 $0.00036 $0.02172
Sonnet 5 $0.00014 $0.00869
Haiku 4.5 $0.00007 $0.00434

Measured 4d ago against content hash 7ec42dbdfe6a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

defect-sweeper 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 4d 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.

agents/defect-sweeper.md · 144 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. 4d ago First seen · 144 lines · 72 tokens per session scan A 7ec42dbdfe6a

Subscribe to this mod's changes

defect-sweeper is an agent published in the GitHub repository masanami/claude-harness (5 stars, last pushed 5d ago), with no licence file. It adds 72 tokens to every session and 4,344 once invoked, about $0.0004 per session on Opus 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 2026-08-31.