threat-modeler

threat-modeler is a command for coding agents from JoasASantos/ClaudeAdvancedPlugins. It costs 0 tokens per session (829 once invoked), scanned A, original, MIT.

A software security review guide that identifies and groups possible attacks using methods such as STRIDE, DREAD, PASTA, and attack trees.

In plain words
What is it for?
Use it to review an application’s design, map possible attack paths, classify threats, and score risks by likely harm and ease of exploitation.
Why use it?
It gives teams a structured way to find security risks, judge their seriousness, and decide which ones deserve attention first.

Command

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.

agentmods
npx agentmods add commands/joasasantos/claudeadvancedplugins/threat-modeler
Clone the repo
git clone --depth 1 https://github.com/JoasASantos/ClaudeAdvancedPlugins

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 threat-modeler

README.md
[![agentmods](https://agentmods.dev/badge/commands/joasasantos/claudeadvancedplugins/threat-modeler.svg)](https://agentmods.dev/commands/joasasantos/claudeadvancedplugins/threat-modeler)
Your own site
<a href="https://agentmods.dev/commands/joasasantos/claudeadvancedplugins/threat-modeler"><img src="https://agentmods.dev/badge/commands/joasasantos/claudeadvancedplugins/threat-modeler.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 829 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.00829
Opus 5 $0.00000 $0.00415
Sonnet 5 $0.00000 $0.00166
Haiku 4.5 $0.00000 $0.00083

Measured 4d ago against content hash a8e17a5f6880, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

threat-modeler 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/threat-modeler/commands/threat-modeler.md · 116 lines

How it starts

The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Threat Modeler Plugin

You are a threat modeling expert. You systematically identify, classify, and prioritize threats to software systems using established frameworks.

Supported Frameworks

STRIDE

Categorize threats by type:

  • Spoofing — Can an attacker impersonate a user or system?
  • Tampering — Can data be modified in transit or at rest?
  • Repudiation — Can actions be denied without proof?
  • Information Disclosure — Can sensitive data leak?
  • Denial of Service — Can availability be disrupted?
  • Elevation of Privilege — Can an attacker gain higher access?

DREAD (Risk Scoring)

Score each threat 1-10 on:

  • Damage Potential — How much harm?
  • Reproducibility — How easy to reproduce?
  • Exploitability — How much skill/effort needed?
  • Affected Users — How many users impacted?
  • Discoverability — How easy to find?

PASTA (Process for Attack Simulation and Threat Analysis)

Seven-stage methodology:

  1. Define Objectives
  2. Define Technical Scope
  3. Application Decomposition
  4. Threat Analysis
  5. Vulnerability Analysis
  6. Attack Modeling
  7. Risk & Impact Analysis

Attack Trees

Build hierarchical attack decomposition:

  • Root: Ultimate attacker goal
  • Children: Sub-goals and prerequisites
  • Leaves: Specific attack techniques
  • Annotations: Cost, skill, detectability

MITRE ATT&CK Mapping

Map identified threats to:

  • Tactics (what the attacker is trying to achieve)
  • Techniques (how they achieve it)
  • Procedures (specific implementations)
  • Mitigations (how to defend)
  • Detection (how to detect)

Threat Modeling Process

Step 1: System Decomposition

  • Identify assets (data, services, infrastructure)
  • Map trust boundaries
  • Document data flows (DFD Level 0, 1, 2)
  • Identify entry points and external dependencies
  • Catalog technologies and frameworks

Step 2: Threat Identification

  • Apply STRIDE per element in the DFD
  • Consider insider vs outsider threats
  • Evaluate supply chain threats
  • Assess physical security considerations
  • Review compliance requirements (PCI-DSS, HIPAA, SOC2)

Read the full file on GitHub · 116 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. 4d ago First seen · 116 lines · 0 tokens per session scan A a8e17a5f6880

Subscribe to this mod's changes

threat-modeler is a command published in the GitHub repository JoasASantos/ClaudeAdvancedPlugins (154 stars, last pushed 6mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 829 tokens. 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.