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Threat Modeling

Category: Security  ·  Sub-category: threat-hunting  ·  Last updated:
Produces structured threat models for software systems using STRIDE on data flow diagrams. Generates DFDs with trust boundaries, identifies threats per element, scores risks, and defines concrete mitigations. Outputs a complete threat model Markdown document through phased, interactive delivery. Use when threat modeling a system, analyzing security threats, identifying attack surfaces, performing STRIDE analysis, assessing security risks in architecture, creating a threat model document, or when the user mentions threat model, attack surface, trust boundaries, STRIDE, or security risk analysis.

About this skill (catalog notes)

Threat Modeling includes pricing or quota commentary; at least one code block. The SKILL.md runs to about 1,084 words, in the catalog's typical mid-range.

Original author
0x0pointer
Indexed lastmod
Catalog position
Security · threat-hunting
Indexed related skills
10

How Threat Modeling fits the catalog

Threat Modeling sits in the Security category under the threat-hunting sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

Produce a threat model for a user-described system using STRIDE-per-element on a data flow diagram.

What this skill does

Threat Modeling is a community-contributed Claude Code skill in the threat-hunting sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/threat-modeling/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when threat modeling a system, analyzing security threats, identifying attack surfaces, performing STRIDE analysis, assessing security risks in architecture, creating a threat model document, or when the user mentions threat model, attack surface, trust boundaries, STRIDE, or security risk analysis.

Who uses this skill

The Threat Modeling Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 116,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/threat-modeling
curl -L https://claudskills.com/skills/threat-modeling/SKILL.md \
  -o ~/.claude/skills/threat-modeling/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/threat-modeling/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/threat-modeling/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\threat-modeling\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Threat Modeling Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/threat-modeling/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Threat Modeling skill do?
Produces structured threat models for software systems using STRIDE on data flow diagrams. Generates DFDs with trust boundaries, identifies threats per element, scores risks, and defines concrete mitigations. Outputs a complete threat model Markdown document through phased, interactive delivery. Use when threat modeling a system, analyzing security threats, identifying attack surfaces, performing STRIDE analysis, assessing security risks in architecture, creating a threat model document, or when the user mentions threat model, attack surface, trust boundaries, STRIDE, or security risk analysis.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Threat Modeling skill?
Use Threat Modeling when your Claude Code task falls under the Security category — specifically in the threat hunting area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Threat Modeling" or describe the task and let Claude pick). Browse related skills at /category/security/.
What is a Claude Code skill and how does the Threat Modeling skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Threat Modeling is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
0x0pointer. (2026). Threat Modeling [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/threat-modeling/
BibTeX
@misc{threat-modeling-2026,
  author    = {0x0pointer},
  title     = {Threat Modeling [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/threat-modeling/}
}

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