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.
npx skills add is-bo/fullstack-forge-skill --skill attack-tree-constructiongit clone --depth 1 https://github.com/is-bo/fullstack-forge-skillWrote 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/skills/is-bo/fullstack-forge-skill/attack-tree-construction)<a href="https://agentmods.dev/skills/is-bo/fullstack-forge-skill/attack-tree-construction"><img src="https://agentmods.dev/badge/skills/is-bo/fullstack-forge-skill/attack-tree-construction.svg" alt="Measured on agentmods" 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 | $0.00031 | $0.00554 |
| Opus 5 | $0.00015 | $0.00277 |
| Sonnet 5 | $0.00006 | $0.00111 |
| Haiku 4.5 | $0.00003 | $0.00055 |
Grade A, and why
attack-tree-construction 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 3d 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.
This is a copy
100% identical to attack-tree-construction — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 75 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Attack Tree Construction
Systematic attack path visualization and analysis.
When to Use This Skill
- Visualizing complex attack scenarios
- Identifying defense gaps and priorities
- Communicating risks to stakeholders
- Planning defensive investments
- Penetration test planning
- Security architecture review
Core Concepts
1. Attack Tree Structure
[Root Goal]
|
┌────────────┴────────────┐
│ │
[Sub-goal 1] [Sub-goal 2]
(OR node) (AND node)
│ │
┌─────┴─────┐ ┌─────┴─────┐
│ │ │ │
[Attack] [Attack] [Attack] [Attack]
(leaf) (leaf) (leaf) (leaf)
2. Node Types
| Type | Symbol | Description |
|---|---|---|
| OR | Oval | Any child achieves goal |
| AND | Rectangle | All children required |
| Leaf | Box | Atomic attack step |
3. Attack Attributes
| Attribute | Description | Values |
|---|---|---|
| Cost | Resources needed | $, $$, $$$ |
| Time | Duration to execute | Hours, Days, Weeks |
| Skill | Expertise required | Low, Medium, High |
| Detection | Likelihood of detection | Low, Medium, High |
Templates and detailed worked examples
Full template library lives in references/details.md. Read that file when you need concrete templates for this skill.
Best Practices
Do's
- Start with clear goals - Define what attacker wants
- Be exhaustive - Consider all attack vectors
- Attribute attacks - Cost, skill, and detection
- Update regularly - New threats emerge
- Validate with experts - Red team review
Don'ts
- Don't oversimplify - Real attacks are complex
- Don't ignore dependencies - AND nodes matter
- Don't forget insider threats - Not all attackers are external
- Don't skip mitigations - Trees are for defense planning
- Don't make it static - Threat landscape evolves
What ships with it
1 file 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.
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.
- 3d ago First seen · 75 lines · 31 tokens per session scan A 69021049bd4c
attack-tree-construction is a skill published in the GitHub repository is-bo/fullstack-forge-skill (2 stars, last pushed yesterday), licensed Apache-2.0. It adds 31 tokens to every session and 554 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to attack-tree-construction, differing in 0 lines, and is treated as a copy.
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