bug-reviewer

bug-reviewer is an agent for Claude Code from kenspc/kenspc-claude-plugin. It costs 91 tokens per session (3,213 once invoked), scanned C, original, no licence file.

A code review helper that looks for common bugs, such as incorrect boundaries, missing values, unsafe asynchronous code, race conditions, faulty database queries, and type errors.

In plain words
What is it for?
Use it to inspect code for off-by-one errors, null references, async mistakes, race conditions, query errors, and type-safety issues.
Why use it?
It helps catch logic and safety problems that are easy to miss during a normal review. It can be used as part of a parallel review or on its own with project context.

Agent for Claude Code

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

Part of the kenspc plugin — 9 skills, 10 commands, 11 agents, 2 hooks shipped together

Good fit Use it to inspect code for off-by-one errors, null references, async mistakes, race conditions, query errors, and type-safety issues.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/kenspc/kenspc-claude-plugin/bug-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/kenspc/kenspc-claude-plugin

Made for: Claude Code.

Or install kenspc, the plugin that ships this one along with the rest of its 9 skills, 10 commands, 11 agents, 2 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 bug-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/kenspc/kenspc-claude-plugin/bug-reviewer/github.svg)](https://agentmods.dev/agents/kenspc/kenspc-claude-plugin/bug-reviewer)
Your own site
<a href="https://agentmods.dev/agents/kenspc/kenspc-claude-plugin/bug-reviewer"><img src="https://agentmods.dev/badge/agents/kenspc/kenspc-claude-plugin/bug-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 bug-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/kenspc/kenspc-claude-plugin/bug-reviewer"><img src="https://agentmods.dev/badge/agents/kenspc/kenspc-claude-plugin/bug-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 91 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,213 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. 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 $0.00091 $0.03213
Opus 5.5 $0.00036 $0.01285
Sonnet 5.5 $0.00018 $0.00643
Haiku 4.5 $0.00009 $0.00321

Measured today against content hash 39f5e346a5d8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

bug-reviewer scanned grade C with 1 finding 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 today.

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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

no cleanup, while files left in `/tmp` or removed with `rm -rf` depend on the
plugins/kenspc/agents/bug-reviewer.md · 249 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. today Changed · +1 lines 39f5e346a5d8
  2. 2d ago Changed · +24 lines · +31 tokens per session 1c378c5298ec
  3. 3d ago Changed · +11 lines f58b8c80e9f9
  4. 21d ago Changed · +3 lines 1fac4a794860
  5. 24d ago Changed · +12 lines ac1b6f45c93d
  6. 25d ago Changed · +99 lines · +3 tokens per session scan A → C 2d7a0d6c5c23
  7. 1mo ago First seen · 99 lines · 57 tokens per session scan A a3139394c996

Subscribe to this mod's changes

bug-reviewer is an agent published in the GitHub repository kenspc/kenspc-claude-plugin (1 stars, last pushed today), with no licence file. It adds 91 tokens to every session and 3,213 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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