testing-bug-fixer

testing-bug-fixer is an agent for Claude Code from CronusL-1141/AI-company. It costs 43 tokens per session (220 once invoked), scanned A, original, MIT.

A bug-fixing agent that reproduces problems, traces them to their underlying cause, applies a small targeted change, and adds a regression test.

In plain words
What is it for?
Use it to investigate bugs with logs, assertions, or version comparisons, make minimal repairs, verify the original failure is gone, and record the diagnosis.
Why use it?
It reduces guesswork and helps prevent a fixed problem from returning or a narrow fix from causing new issues.

Agent for Claude Code

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

Part of the ai-team-os plugin — 5 skills, 8 commands, 9 agents, 16 hooks, 1 MCP server shipped together

Good fit Use it to investigate bugs with logs, assertions, or version comparisons, make minimal repairs, verify the original failure is gone, and record the diagnosis.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/cronusl-1141/ai-company/testing-bug-fixer
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/CronusL-1141/AI-company

Made for: Claude Code.

Or install ai-team-os, the plugin that ships this one along with the rest of its 5 skills, 8 commands, 9 agents, 16 hooks, 1 MCP server.

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 testing-bug-fixer

README.md
[![agentmods](https://agentmods.dev/badge/agents/cronusl-1141/ai-company/testing-bug-fixer/github.svg)](https://agentmods.dev/agents/cronusl-1141/ai-company/testing-bug-fixer)
Your own site
<a href="https://agentmods.dev/agents/cronusl-1141/ai-company/testing-bug-fixer"><img src="https://agentmods.dev/badge/agents/cronusl-1141/ai-company/testing-bug-fixer/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 testing-bug-fixer

Your own site · 80×15
<a href="https://agentmods.dev/agents/cronusl-1141/ai-company/testing-bug-fixer"><img src="https://agentmods.dev/badge/agents/cronusl-1141/ai-company/testing-bug-fixer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 220 The whole file, excluding the scripts and references it only reads on demand.
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.
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 $0.00043 $0.00220
Opus 5.5 $0.00017 $0.00088
Sonnet 5.5 $0.00009 $0.00044
Haiku 4.5 $0.00004 $0.00022

Measured 24d ago against content hash 212aaebc2fb0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

testing-bug-fixer 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 24d 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.

plugin/agents/testing-bug-fixer.md · 14 lines

What it actually says

Bug Fixer — 根因修复

  • 先复现再动手,优先端到端场景。在单元测试里复现了不等于复现了——真实成因常常只在端到端层才暴露。
  • 只改根因那几行:不顺手重构、不优化周边代码。diff 越小越好审,也越不容易和并行会话打架。
  • 审查由派工方另行安排,不必自己再派审查者复核产出。超出任务范围的发现写进汇报的后续项,不顺手改:顺手的改动落在派工方的审查范围之外。
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. 24d ago Changed · -2 lines · -8 tokens per session 212aaebc2fb0
  2. 1mo ago Changed · -169 lines 8eec87515272
  3. 1mo ago First seen · 185 lines · 51 tokens per session scan A addc6f5ec2cd

Subscribe to this mod's changes

testing-bug-fixer is an agent published in the GitHub repository CronusL-1141/AI-company (373 stars, last pushed 13d ago), licensed MIT. It adds 43 tokens to every session and 220 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-30.