testing-handbook-generator

testing-handbook-generator is a skill for Claude Code from marduk191/qwen3_mcp. It costs 44 tokens per session (3,298 once invoked), scanned A, original, MIT.

A generator for creating Claude Code security-testing skills from the Trail of Bits Testing Handbook, a guide to application-security testing.

In plain words
What is it for?
It is for creating or updating security-testing skills based on the handbook, including bulk generation or refreshes. It is not intended for general security questions.
Why use it?
It helps turn handbook material into reusable instructions for security tools and techniques instead of writing each skill from scratch.

Skill for Claude Code

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

Part of the testing-handbook-skills plugin — 15 skills shipped together

Good fit It is for creating or updating security-testing skills based on the handbook, including bulk generation or refreshes. It is not intended for general security questions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/marduk191/qwen3_mcp/testing-handbook-generator
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 marduk191/qwen3_mcp --skill testing-handbook-generator
Clone the repo
git clone --depth 1 https://github.com/marduk191/qwen3_mcp

Made for: Claude Code.

Or install testing-handbook-skills, the plugin that ships this one along with the rest of its 15 skills.

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-handbook-generator

README.md
[![agentmods](https://agentmods.dev/badge/skills/marduk191/qwen3_mcp/testing-handbook-generator/github.svg)](https://agentmods.dev/skills/marduk191/qwen3_mcp/testing-handbook-generator)
Your own site
<a href="https://agentmods.dev/skills/marduk191/qwen3_mcp/testing-handbook-generator"><img src="https://agentmods.dev/badge/skills/marduk191/qwen3_mcp/testing-handbook-generator/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-handbook-generator

Your own site · 80×15
<a href="https://agentmods.dev/skills/marduk191/qwen3_mcp/testing-handbook-generator"><img src="https://agentmods.dev/badge/skills/marduk191/qwen3_mcp/testing-handbook-generator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,298 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 $0.00044 $0.03298
Opus 5 $0.00022 $0.01649
Sonnet 5 $0.00009 $0.00660
Haiku 4.5 $0.00004 $0.00330

Measured 12d ago against content hash bb49c9516f4d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

testing-handbook-generator 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 12d 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/testing-handbook-skills/skills/testing-handbook-generator/SKILL.md · 373 lines

How it starts

The opening of the file, as written. The whole thing — 373 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Testing Handbook Skill Generator

Generate and maintain Claude Code skills from the Trail of Bits Testing Handbook.

When to Use

Invoke this skill when:

  • Creating new security testing skills from handbook content
  • User mentions "testing handbook", "appsec.guide", or asks about generating skills
  • Bulk skill generation or refresh is needed

Do NOT use for:

  • General security testing questions (use the generated skills)
  • Non-handbook skill creation

Handbook Location

The skill needs the Testing Handbook repository. See discovery.md for full details.

Quick reference: Check ./testing-handbook, ../testing-handbook, ~/testing-handbook → ask user → clone as last resort.

Repository: https://github.com/trailofbits/testing-handbook

Workflow Overview

Phase 0: Setup              Phase 1: Discovery
┌─────────────────┐        ┌─────────────────┐
│ Locate handbook │   →    │ Analyze handbook│
│ - Find or clone │        │ - Scan sections │
│ - Confirm path  │        │ - Classify types│
└─────────────────┘        └─────────────────┘
         ↓                          ↓
Phase 3: Generation        Phase 2: Planning
┌─────────────────┐        ┌─────────────────┐
│ TWO-PASS GEN    │   ←    │ Generate plan   │
│ Pass 1: Content │        │ - New skills    │
│ Pass 2: X-refs  │        │ - Updates       │
│ - Write to gen/ │        │ - Present user  │
└─────────────────┘        └─────────────────┘
         ↓
Phase 4: Testing           Phase 5: Finalize
┌─────────────────┐        ┌─────────────────┐
│ Validate skills │   →    │ Post-generation │
│ - Run validator │        │ - Update README │
│ - Test activation│       │ - Update X-refs │
│ - Fix issues    │        │ - Self-improve  │
└─────────────────┘        └─────────────────┘

Scope Restrictions

ONLY modify these locations:

  • plugins/testing-handbook-skills/skills/[skill-name]/* - Generated skills (as siblings to testing-handbook-generator)
  • plugins/testing-handbook-skills/skills/testing-handbook-generator/* - Self-improvement
  • Repository root README.md - Add generated skills to table

Read the full file on GitHub · 373 lines

Files

What ships with it

7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 12d ago First seen · 373 lines · 44 tokens per session scan A bb49c9516f4d

Subscribe to this mod's changes

testing-handbook-generator is a skill published in the GitHub repository marduk191/qwen3_mcp (13 stars, last pushed 7mo ago), licensed MIT. It adds 44 tokens to every session and 3,298 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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