threat-model

threat-model is a skill for Claude Code from Srajangpt1/ai-security-crew. It costs 153 tokens per session (1,353 once invoked), scanned A, original, MIT.

A security review method for a feature, component, or system. Threat modeling means identifying realistic ways something could be attacked before it is built or released.

In plain words
What is it for?
Use it to examine data flows, trust boundaries, users, external services, and attack surfaces during development.
Why use it?
It turns vague security concerns into concrete attack scenarios linked to the available technical evidence.

Skill for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

Part of the mcp-security-review plugin — 3 skills, 3 commands, 1 MCP server shipped together

Good fit Use it to examine data flows, trust boundaries, users, external services, and attack surfaces during development.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/srajangpt1/ai-security-crew/threat-model
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 Srajangpt1/ai-security-crew --skill threat-model
Clone the repo
git clone --depth 1 https://github.com/Srajangpt1/ai-security-crew

Made for: Claude Code.

Or install mcp-security-review, the plugin that ships this one along with the rest of its 3 skills, 3 commands, 1 MCP server.

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-model

README.md
[![agentmods](https://agentmods.dev/badge/skills/srajangpt1/ai-security-crew/threat-model/github.svg)](https://agentmods.dev/skills/srajangpt1/ai-security-crew/threat-model)
Your own site
<a href="https://agentmods.dev/skills/srajangpt1/ai-security-crew/threat-model"><img src="https://agentmods.dev/badge/skills/srajangpt1/ai-security-crew/threat-model/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 threat-model

Your own site · 80×15
<a href="https://agentmods.dev/skills/srajangpt1/ai-security-crew/threat-model"><img src="https://agentmods.dev/badge/skills/srajangpt1/ai-security-crew/threat-model.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 153 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,353 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 $0.00153 $0.01353
Opus 5 $0.00077 $0.00677
Sonnet 5 $0.00031 $0.00271
Haiku 4.5 $0.00015 $0.00135

Measured 11d ago against content hash 73c999fd93d1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

threat-model 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 11d 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/threat-model/SKILL.md · 145 lines

How it starts

The opening of the file, as written. The whole thing — 145 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Perform a threat model for the following feature or component:

$ARGUMENTS


What to do

Produce a developer-focused threat model. If no description was provided in the arguments, ask:

  1. What are you building? (feature name + description)
  2. What tech stack is involved?
  3. Do you have code snippets, data flows, or architecture notes to analyze?

Write threats in plain language — concrete attack scenarios a developer would understand, not abstract security categories. Every threat should link to specific evidence from the provided context.

Step 1 — Understand the Feature

Extract:

  • Feature/component name — what is this?
  • Description — what does it do, what problem does it solve?
  • Tech stack — languages, frameworks, databases, cloud services
  • Data touched — credentials, PII, payment data, tokens, internal config, etc.
  • System boundaries — what calls this? what does it call? external vs. internal?
  • Trust model — who are the actors? (users, admins, anonymous, third-party services)

Step 2 — Identify Attack Surfaces

Scan for:

  • Authentication endpoints (login, registration, password reset, OAuth callbacks)
  • File upload / download handlers
  • External API integrations (third-party services, webhooks, callbacks)
  • Admin / privileged operations
  • Data exports or bulk operations
  • Cross-tenant operations in multi-tenant systems
  • Unauthenticated or public endpoints
  • Async jobs or background workers that consume external data

And sensitive data patterns:

  • Credentials and secrets (passwords, API keys, tokens, private keys)
  • PII (names, emails, phone numbers, addresses, SSNs)
  • Financial data (card numbers, account numbers, transaction history)
  • Health data (PHI, medical records, diagnoses)
  • Internal configuration or infrastructure details

Step 3 — Generate Threats

Consider these attack dimensions:

  • Spoofing — Can an attacker impersonate a user, service, or system?
  • Tampering — Can data be modified in transit or at rest without detection?
  • Repudiation — Can users deny actions due to missing audit trails?
  • Information Disclosure — Can sensitive data leak through errors, logs, or responses?
  • Denial of Service — Can an attacker exhaust resources or disrupt availability?
  • Elevation of Privilege — Can a low-privilege user gain higher access?

Read the full file on GitHub · 145 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. 11d ago First seen · 145 lines · 153 tokens per session scan A 73c999fd93d1

Subscribe to this mod's changes

threat-model is a skill published in the GitHub repository Srajangpt1/ai-security-crew (68 stars, last pushed 4mo ago), licensed MIT. It adds 153 tokens to every session and 1,353 once invoked, about $0.0008 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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