security-investigator: Skill for Claude Code

.github/skills/exposure-investigation/SKILL.md

exposure-investigation is a skill for Claude Code, Codex from SCStelz/security-investigator. It costs 194 tokens per session (14,955 once invoked), scanned A, original, MIT.

A guide for producing a vulnerability and exposure report for an organization or device. It covers software weaknesses called CVEs, security settings, unsupported software, important assets, attack paths, and certificate status.

In plain words
What is it for?
Use it to review CVE severity and exploitability, check security configuration compliance, find end-of-support software, examine attack paths, and assess certificates.
Why use it?
It provides a broader security posture review than a list of software vulnerabilities alone, helping show how weaknesses and configuration issues affect exposure.

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/exposure-investigation/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 exposure-investigation

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/scstelz/security-investigator/exposure-investigation"><img src="https://agentmods.dev/badge/skills/scstelz/security-investigator/exposure-investigation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 194 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 14,955 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 pass 7 Sept 2026
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 $0.00194 $0.14955
Opus 5 $0.00097 $0.07477
Sonnet 5 $0.00039 $0.02991
Haiku 4.5 $0.00019 $0.01495

Measured 12d ago against content hash 54dfb74373c4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

exposure-investigation 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 12d 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.

**Substitute:** Replace `<SOFTWARE_NAME>` with the software from Q14 results (e.g., `openssl`, `curl`, `zlib`).
.github/skills/exposure-investigation/SKILL.md · 1,152 lines

How it starts

The opening of the file, as written. The whole thing — 1,152 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Vulnerability & Exposure Management Report — Instructions

Purpose

This skill generates a comprehensive Vulnerability & Exposure Management Report covering the full security posture of the organization (or a specific device). It goes beyond CVEs to include security configuration compliance, end-of-support software, Exposure Management critical assets, attack paths, and certificate status.

Entity Type: Organization-wide (default) or single device

Scope Primary Tables Use Case
Org-wide (default) DeviceTvmSoftwareVulnerabilities, ExposureGraphNodes, ExposureGraphEdges Full organizational posture assessment
Per-device DeviceTvmSoftwareVulnerabilities, DeviceTvmSecureConfigurationAssessment Focused device vulnerability review

What this skill covers:

Section Data Source Coverage
CVE Vulnerabilities DeviceTvmSoftwareVulnerabilities + DeviceTvmSoftwareVulnerabilitiesKB Severity distribution, exploitable CVEs, CVSS scores
Security Configuration DeviceTvmSecureConfigurationAssessment + ...KB OS, Network, Security Controls, Accounts, Application compliance
End-of-Support Software DeviceTvmSoftwareInventory EoS/EoL software with dates and affected devices
Critical Assets ExposureGraphNodes Criticality levels, internet-facing, RCE/privesc flags
Attack Paths ExposureGraphEdges + ExposureGraphNodes Multi-hop paths from vulnerable to critical assets
Defender Device Health DeviceTvmSecureConfigurationAssessment + DeviceInfo AV mode, signatures, RTP, tamper protection, cloud protection compliance by active/inactive status
Certificate Status DeviceTvmCertificateInfo Expired and expiring certificates
Software Evidence (drill-down) DeviceTvmSoftwareEvidenceBeta File paths, registry paths linking vulnerable software to on-disk locations — used for targeted remediation

Read the full file on GitHub · 1,152 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. 12d ago First seen · 1,152 lines · 194 tokens per session scan A 54dfb74373c4

Subscribe to this mod's changes

exposure-investigation is a skill published in the GitHub repository SCStelz/security-investigator (245 stars, last pushed 4d ago), licensed MIT. It adds 194 tokens to every session and 14,955 once invoked, about $0.0010 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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