qa-engineer

qa-engineer is a skill for Claude Code from Jaan-Mustafa/10x-Team. It costs 34 tokens per session (1,874 once invoked), scanned A, original, MIT.

A structured guide for deciding how software should be tested and checked for quality.

In plain words
What is it for?
Use it for test strategies, test plans, bug analysis, coverage gaps, testing frameworks, and quality-assurance processes.
Why use it?
It helps match testing work to the risks, affected users, existing coverage, and likely failure points instead of relying on one default kind of test.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the 10x-Team plugin — 13 skills, 2 commands shipped together

Good fit Use it for test strategies, test plans, bug analysis, coverage gaps, testing frameworks, and quality-assurance processes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jaan-mustafa/10x-team/qa-engineer
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.

Any agent
npx skills add Jaan-Mustafa/10x-Team --skill qa-engineer
Clone the repo
git clone --depth 1 https://github.com/Jaan-Mustafa/10x-Team

Made for: Claude Code.

Or install 10x-Team, the plugin that ships this one along with the rest of its 13 skills, 2 commands.

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 qa-engineer

README.md
[![agentmods](https://agentmods.dev/badge/skills/jaan-mustafa/10x-team/qa-engineer.svg)](https://agentmods.dev/skills/jaan-mustafa/10x-team/qa-engineer)
Your own site
<a href="https://agentmods.dev/skills/jaan-mustafa/10x-team/qa-engineer"><img src="https://agentmods.dev/badge/skills/jaan-mustafa/10x-team/qa-engineer.svg" alt="Measured on agentmods" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,874 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 $0.00034 $0.01874
Opus 5 $0.00017 $0.00937
Sonnet 5 $0.00007 $0.00375
Haiku 4.5 $0.00003 $0.00187

Measured 8d ago against content hash d191e673a9ef, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, 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 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.

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.

skills/qa-engineer/SKILL.md · 167 lines

How it starts

The opening of the file, as written. The whole thing — 167 lines — stays where its author put it; the contents beside it link to each section on GitHub.

QA Engineer

Help with testing strategy and quality decisions through structured analysis of risk, coverage, and test effectiveness.

Start by understanding what's being built or changed and the current test coverage, then ask questions one at a time to clarify testing needs. Once you understand the full picture, present a structured testing recommendation.

Anti-Pattern: "Just Write Unit Tests"

Every testing decision goes through this process. A new feature, a bug regression, a release checklist — all of them. Defaulting to unit tests without considering what kind of testing actually catches bugs in THIS system leads to gaps where it matters most. The analysis can be short, but you MUST understand the risk profile first.

Checklist

You MUST complete these steps in order:

  1. Understand what's being tested — feature, change, or system behavior
  2. Assess risk profile — what breaks if this fails, who's affected, how bad is it
  3. Ask clarifying questions — one at a time, understand edge cases, environments, data scenarios
  4. Map current coverage — existing tests, gaps, areas of flakiness
  5. Propose testing strategy — 2-3 approaches with trade-offs on coverage vs effort
  6. Present test plan — structured plan with priority, cases, and expected results
  7. Define quality gates — what must pass before shipping

Process Flow

Understand what's being tested
        │
        v
Assess risk profile
        │
        v
Ask clarifying questions (one at a time)
        │
        v
Map current test coverage
        │
        v
Propose testing strategy (2-3 options)
        │
        v
Present test plan
        │
        v
User aligned? ──no──> Revise
        │
       yes
        │
        v
Define quality gates

Read the full file on GitHub · 167 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. 8d ago First seen · 167 lines · 34 tokens per session scan A d191e673a9ef

Subscribe to this mod's changes

qa-engineer is a skill published in the GitHub repository Jaan-Mustafa/10x-Team (11 stars, last pushed 2mo ago), licensed MIT. It adds 34 tokens to every session and 1,874 once invoked, about $0.0002 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 2026-08-30.

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