security-diff-scan skillA
security-diff-scan is agent-read markdown (skill) from cowork-os/cowork-os: Use when the user asks for a security review of a pull request, commit, branch diff, working-tree patch, or other Git-backed change set..
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 Diff Scan Used when a user wants to review a Git-backed change set for security regressions. 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. ## Goal Setup …
Read the whole file at its exact version.
How to install
mdr add cowork-os/cowork-os/security-diff-scan@git:20260919.c03e78bmdr add cowork-os/cowork-os/security-diff-scan@sha256:6743de77b69888bePin 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.
[](https://markdownregistry.com/a/art_kuunvzk4phpmupwe)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260919.c03e78b latest | 2026-09-19 | c03e78b | 9,833 B | A | view · diff |
| git:20260606.a4decec | 2026-06-06 | a4decec | 9,836 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (9833 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
cowork-os/cowork-os · 459 stars · license MIT · pushed 2026-09-23 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_kuunvzk4phpmupwe GET https://markdownregistry.com/api/v1/resolve?ref=cowork-os/cowork-os/security-diff-scan GET https://markdownregistry.com/api/v1/blob/6743de77b69888be07cf676b8190227e8fa1074b761937878ecb9d7465a47800
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.