security-investigator: Skill for Claude Code

.github/skills/threat-intel-campaign/SKILL.md

threat-intel-campaign is a skill for Claude Code, Codex from SCStelz/security-investigator. It costs 181 tokens per session (6,747 once invoked), scanned A, original, MIT.

A threat-hunting campaign authoring aid that turns published threat-intelligence articles into tested searches for signs of cyber attacks. Threat intelligence is reporting about attackers, their tools, and their methods.

In plain words
What is it for?
Use it with an article URL or an RSS/Atom feed, a web feed of published articles, to triage recent reporting, write and test hunting queries, and publish campaign files and indexes.
Why use it?
It filters articles for useful hunting leads and turns relevant reporting into checked, tuned campaign files instead of leaving the findings as prose.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

This is SCStelz/security-investigator's own configuration. It tells Claude Code and Codex how to work on security-investigator itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything security-investigator configures →

Reuse

Borrowing it

Nothing to install: this file belongs to SCStelz/security-investigator. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/SCStelz/security-investigator/main/.github/skills/threat-intel-campaign/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/SCStelz/security-investigator

Made for: Claude Code, Codex.

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-intel-campaign

README.md
[![agentmods](https://agentmods.dev/badge/skills/scstelz/security-investigator/threat-intel-campaign/github.svg)](https://agentmods.dev/skills/scstelz/security-investigator/threat-intel-campaign)
Your own site
<a href="https://agentmods.dev/skills/scstelz/security-investigator/threat-intel-campaign"><img src="https://agentmods.dev/badge/skills/scstelz/security-investigator/threat-intel-campaign/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-intel-campaign

Your own site · 80×15
<a href="https://agentmods.dev/skills/scstelz/security-investigator/threat-intel-campaign"><img src="https://agentmods.dev/badge/skills/scstelz/security-investigator/threat-intel-campaign.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 181 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,747 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Prompt Injection · line 60
    Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.
    Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
How audits are shown
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 $0.00181 $0.06747
Opus 5 $0.00090 $0.03374
Sonnet 5 $0.00036 $0.01349
Haiku 4.5 $0.00018 $0.00675

Measured 13d ago against content hash 7dc66a18df83, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

threat-intel-campaign scanned grade A with 1 finding 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 13d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

| **Python 3** (stdlib `xml.etree`, `urllib`) | RSS/Atom parsing — no external dependency required |
.github/skills/threat-intel-campaign/SKILL.md · 435 lines

How it starts

The opening of the file, as written. The whole thing — 435 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Threat Intelligence Campaign Authoring — Instructions

Purpose

This skill converts published threat-intelligence reporting into tested, tuned, publish-ready threat-hunting campaigns that land in queries/threat-intelligence/YYYY-MM/. It exists to be driven either:

  • Interactively — a human gives one article URL ("read this article and write/test/tune hunts"), or
  • Unattended — a scheduled automation passes a feed URL and the skill triages everything published in a recent window.

It does the authoring (parse → triage → relevance gate → write → test → tune → publish files → regenerate manifest/TOCs). It deliberately does NOT create branches, commits, or pull requests. That orchestration — and the per-article PR isolation — belongs to the calling workflow. This keeps the skill reusable and free of git side effects when a human runs it.

What this skill produces:

Output Description
Campaign file(s) queries/threat-intelligence/YYYY-MM/<slug>.md in the standard campaign format
Regenerated artifacts .github/manifests/discovery-manifest.yaml + per-file Quick Reference TOCs
Structured result A JSON array (one entry per article) the calling automation consumes to drive per-article PRs
Human summary A readable per-article decision log
In-chat hunt findings summary A per-article report of what the test runs actually surfaced — real hits, false positives to tune, and follow-up actions. Emitted to chat/run output only; never written to a tracked file. This is where concrete findings live, keeping the committed campaign file PII-free.

📑 TABLE OF CONTENTS

  1. Critical Workflow Rules
  2. Prerequisites
  3. Inputs / Parameters
  4. Invocation Modes
  5. Execution Workflow — Phase 0–6
  6. The Relevance Gate (Huntability Rubric)
  7. Writing / Testing / Tuning Queries
  8. Campaign File Format
  9. Structured Output Contract
  10. In-Chat Hunt Findings Summary
  11. Known Pitfalls
  12. Quality Checklist

Read the full file on GitHub · 435 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. 13d ago First seen · 435 lines · 181 tokens per session scan A 7dc66a18df83

Subscribe to this mod's changes

threat-intel-campaign is a skill published in the GitHub repository SCStelz/security-investigator (245 stars, last pushed 4d ago), licensed MIT. It adds 181 tokens to every session and 6,747 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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