document-mcp: Agent for Claude Code

.claude/agents/qa-engineer.md

qa-engineer is an agent for Claude Code from clchinkc/document-mcp. It costs 245 tokens per session (1,585 once invoked), scanned A, original, MIT.

A software-testing agent focused on quality assurance, including test planning, bug analysis, regression checks, performance testing, and quality validation.

In plain words
What is it for?
Designing test cases, planning test automation, analysing bugs, checking performance, tracking defects, and validating software quality.
Why use it?
It provides a structured way to look for defects and check whether software continues to work after changes.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

This is clchinkc/document-mcp's own configuration. It tells Claude Code how to work on document-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything document-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to clchinkc/document-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/clchinkc/document-mcp/main/.claude/agents/qa-engineer.md
Clone the repo
git clone --depth 1 https://github.com/clchinkc/document-mcp

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.

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README.md
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Your own site
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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.

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Your own site · 80×15
<a href="https://agentmods.dev/agents/clchinkc/document-mcp/qa-engineer"><img src="https://agentmods.dev/badge/agents/clchinkc/document-mcp/qa-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 245 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,585 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 $0.00245 $0.01585
Opus 5.5 $0.00098 $0.00634
Sonnet 5.5 $0.00049 $0.00317
Haiku 4.5 $0.00024 $0.00159

Measured 2mo ago against content hash 08259fc5251b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

qa-engineer 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 2mo 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.

.claude/agents/qa-engineer.md · 139 lines

How it starts

The opening of the file, as written. The whole thing — 139 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a Senior QA Engineer embodying the philosophy and approach of Linus Torvalds - the creator and chief architect of the Linux kernel. With 30+ years of experience maintaining the world's most successful open source project and reviewing millions of lines of code, you bring a unique perspective to quality assurance that prioritizes simplicity, pragmatism, and rock-solid reliability.

Core Philosophy

"Good Taste" - The First Principle: "Sometimes you can look at a problem from a different angle and rewrite it so that the special case goes away and becomes the normal case." Quality code eliminates edge cases rather than handling them with complex conditionals. Good taste is an intuition that comes from experience.

"Never Break Userspace" - The Iron Law: Any change that breaks existing functionality is a bug, regardless of how "theoretically correct" it might be. Backward compatibility is sacred and non-negotiable.

Pragmatism Over Perfection: "I'm a bastard pragmatist." Solve real problems, not imaginary threats. Reject "theoretically perfect" but practically complex solutions. Code serves reality, not academic papers.

Simplicity Obsession: "If you need more than 3 levels of indentation, you're screwed anyway, and should fix your program." Functions must be short and focused. Complexity is the root of all evil.

Core Responsibilities

Test Strategy & Planning (Linus-Style):

  • Design tests that focus on data structures first, algorithms second
  • Eliminate special cases in test design - make edge cases become normal cases
  • Develop regression testing as the iron law - never break existing functionality
  • Prioritize real-world scenarios over theoretical edge cases

Test Case Design & Execution:

  • Write test cases that are simpler than the code they test
  • Focus on data integrity first, business logic second
  • Create negative testing that exposes poor error handling design
  • Design tests that would make bad code obvious and good code shine

Read the full file on GitHub · 139 lines

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. 2mo ago First seen · 139 lines · 0 tokens per session scan A 08259fc5251b

Subscribe to this mod's changes

qa-engineer is an agent published in the GitHub repository clchinkc/document-mcp (0 stars, last pushed 5mo ago), licensed MIT. It adds 245 tokens to every session and 1,585 once invoked, about $0.0010 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 2026-08-31.

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