AttackGen is a cybersecurity tool that uses large language models and the MITRE ATT&CK and ATLAS frameworks to create incident-response scenarios tailored to selected threat actors, AI attack cases, and organisational details. Security teams and purple teams can use it to test and practise responses to cyber incidents. Its catalogue entries provide instructions and skills for using AttackGen.
Borrowing it
Nothing to install: this file belongs to mrwadams/attackgen. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/mrwadams/attackgen/main/CLAUDE.mdgit clone --depth 1 https://github.com/mrwadams/attackgenWrote 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.
[](https://agentmods.dev/instructions/mrwadams/attackgen/claude-md)<a href="https://agentmods.dev/instructions/mrwadams/attackgen/claude-md"><img src="https://agentmods.dev/badge/instructions/mrwadams/attackgen/claude-md/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.
<a href="https://agentmods.dev/instructions/mrwadams/attackgen/claude-md"><img src="https://agentmods.dev/badge/instructions/mrwadams/attackgen/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00005 | $0.00005 |
| Opus 5.5 | $0.00002 | $0.00002 |
| Sonnet 5.5 | $0.00001 | $0.00001 |
| Haiku 4.5 | $0.00001 | $0.00001 |
Grade A, and why
attackgen CLAUDE.md 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 2d 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.
The source is not reproduced here
Licensed GPL-3.0
The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
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.
- 2d ago Changed · -130 lines · -5,290 tokens per session 336cc4fbf19b
- 20d ago Changed · -8 tokens per session 2e72b6f3eb78
- 25d ago Changed · +1 lines · +239 tokens per session 4cc87288b7f7
- 28d ago Changed · -1 lines · +24 tokens per session 6d2a8ccb4bbc
- 1mo ago Changed · +229 tokens per session c73f8e033234
- 1mo ago Changed · +7 lines · +713 tokens per session 4816e0228b96
- 1mo ago Changed · +2 lines · +216 tokens per session 9bbf78a738e9
- 1mo ago First seen · 123 lines · 3,882 tokens per session scan A 7bd89aba6442
attackgen CLAUDE.md is an instructions file published in the GitHub repository mrwadams/attackgen (1,255 stars, last pushed 3d ago), licensed GPL-3.0. It adds 5 tokens to every session, about $0.0000 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.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.