A skill for building an attack tree, a diagram that breaks an attacker's goal into smaller AND/OR steps leading to possible compromise.

Use it in threat modeling, engagement planning, or explanations of how an asset could be attacked.

It organizes complex attack paths so risks and required protections are easier to examine.

attack-tree — Skill for Claude Code by jassics

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 jassics/awesome-claude-security --skill attack-tree

Clone the repo

git clone --depth 1 https://github.com/jassics/awesome-claude-security

Made for: Claude Code.

Or install security-diagramming, the plugin that ships this one along with the rest of its 5 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/jassics/awesome-claude-security/attack-tree.svg)](https://agentmods.dev/skills/jassics/awesome-claude-security/attack-tree)

Your own site

<a href="https://agentmods.dev/skills/jassics/awesome-claude-security/attack-tree"><img src="https://agentmods.dev/badge/skills/jassics/awesome-claude-security/attack-tree.svg" alt="Measured on agentmods" height="20"></a>

Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 439 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 unknown 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.

Model	Per session	Once invoked
Fable 5.1	$0.00052	$0.00439
Opus 5	$0.00026	$0.00219
Sonnet 5	$0.00010	$0.00088
Haiku 4.5	$0.00005	$0.00044

Measured 4d ago against content hash 398696e08b7e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

attack-tree 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 4d 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.

plugins/security-diagramming/skills/attack-tree/SKILL.md · 43 lines

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.

Read it on GitHub

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.

4d ago First seen · 43 lines · 52 tokens per session scan A 398696e08b7e

Subscribe to this mod's changes

attack-tree is a skill published in the GitHub repository jassics/awesome-claude-security (6 stars, last pushed 1mo ago), licensed GPL-3.0. It adds 52 tokens to every session and 439 once invoked, about $0.0003 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 2026-09-03.

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