security-scan is agent-read markdown (skill) from cowork-os/cowork-os: Use when the user asks for a repository-wide or scoped-path security scan..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# Security Scan
Used when a user wants to audit an entire repository or a user-specified path, package, folder, or submodule-like scope for security vulnerabilities. Keep the scan phases separate and produce final HTML and markdown reports.
## Phase Sequence
Keep these phases distinct and run them in linear order:
1. `$threat-model`
2. `$finding-discovery`
3. `$validation`
4. `$attack-path-analysis`
5. Generate final output
Treat this skill as the top-level orchestrator for the four skills plus the final report assembly step. Do not collapse the phases together.
For each phase:
1. Read that phase's skill.
2. Load only the inputs required for that phase.
3. Complete that phase's workflow and checklist.
4. Only then read the next phase's skill.
Do not read ahead into later-phase skills until the current phase has completed.
Do not amortize effort across phases: complete each phase to the full depth expected by that phase before moving on.
If user requests a repo-side scan or a scoped scan, stop and ask for authorization for subagents now before setting up the goal.
## Goal Setup
…
Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
A 17 of 17 checks passed. Deterministic, no model, same answer every run.
pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (15044 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag
Source
GitHub
cowork-os/cowork-os · 459 stars · license MIT · pushed 2026-09-23 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_kll22iubd34usaeq
GET https://markdownregistry.com/api/v1/resolve?ref=cowork-os/cowork-os/security-scan
GET https://markdownregistry.com/api/v1/blob/4f8bea1a99bcb8d2e7bf7a6e0c81940194820777d64dad6de4056b2a4f96438b
Your agent does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
cowork-os/cowork-os · resources/plugin-packs/codex-security/skills/attack-path-analysis/SKILL.md · Use when Codex is already in the attack-path-analysis phase of a security scan or the user explicitly asks to trace a…
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cowork-os/cowork-os · resources/plugin-packs/codex-security/skills/threat-model/SKILL.md · Use when Codex is already in the threat-modeling phase of a security scan, the user explicitly invokes $threat-model…
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