repo-forensics SKILL.md skillC

repo-forensics from alexgreensh/repo-forensics is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add alexgreensh/repo-forensics/repo-forensics@git:20261022.e590f5c

Pins git:20261022.e590f5c in mdr.lock. Pin the fingerprint instead.

Audit grade
C, 15 of 17 checks passed
Kind
SKILL.md skill
Repository
alexgreensh/repo-forensics
Path
plugins/repo-forensics/skills/repo-forensics/SKILL.md
Versions recorded
10
Latest version
git:20261022.e590f5c, committed Oct 22, 2026
First version recorded
Aug 5, 2026
Size
44,396 bytes
Repository stars
203
License
a license file GitHub does not identify

Security forensics for git repos, AI skills, and MCP servers. Audits dependencies, detects prompt injection, credential theft, runtime dynamism, manifest drift, known CVEs, CISA KEV (actively exploited) vulns, and 2026 attack patterns. Not for fixing vulnerabilities or pentesting.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

<!-- repo-forensics v2 | built by Alex Greenshpun | https://linkedin.com/in/alexgreensh -->

# Repo Forensics v2

Deep security auditing for repositories, AI agent skills, and MCP servers.

## Highlights

- **Rules-as-data** (v2.10): ~545 behavioral detection patterns live in versioned
  JSON rule packs (`data/rulepacks/*.json`), not compiled into source. Each rule
  carries a stable id, severity, confidence score, explanation, and embedded
  self-tests. Pack-driven scanners: secrets, SAST, skill threats, MCP security,
  runtime dynamism, and shared patterns. Algorithmic scanners (entropy, AST, DAST,
  git forensics, integrity, manifest drift, binary, lifecycle, dependencies, infra,
  devcontainer, post-incident, dataflow, entrypoint) remain code-driven; they do not
  receive feed updates.
- **Signed daily rule-pack feed** (v2.10): New detection rules reach installed users
  without a code release. An Ed25519-signed bundle is fetched by the daily
  `refresh_threat_dbs.py` pipeline. Shipped packs always work offline; the feed
  only overlays when verified, schema-valid, and strictly newer than the last
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add alexgreensh/repo-forensics/repo-forensics@sha256:1be919b1f75d3567

The line at the top of this page pins the label git:20261022.e590f5c, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_7v5wszbh6k4oshvu.svg)](https://markdownregistry.com/a/art_7v5wszbh6k4oshvu)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 10 versions of this file, between Aug 5, 2026 and Oct 22, 2026, about one every 9 days. Its first recorded version is graded B and its latest C.

versioncommittedcommitsizeaudit
git:20261022.e590f5c latest2026-10-22 e590f5c 44,396 BC view · diff
git:20261022.f8db5ad2026-10-22 f8db5ad 43,960 BC view · diff
git:20261022.2eba4992026-10-22 2eba499 43,936 BC view · diff
git:20261022.b858aa82026-10-22 b858aa8 41,967 BC view · diff
git:20261022.c0a2e0a2026-10-22 c0a2e0a 41,824 BC view · diff
git:20260927.af6a2662026-09-27 af6a266 39,855 BC view · diff
git:20260922.0746c282026-09-22 0746c28 39,854 BC view · diff
git:20260922.ec41a472026-09-22 ec41a47 39,546 BC view · diff
git:20260825.ef473e62026-08-25 ef473e6 39,102 BC view · diff
git:20260805.44252a62026-08-05 44252a6 34,487 BB view

Audit of the latest version

C  15 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • fail: No prompt-injection phrasing (matched: ignore previous instructions)
  • fail: No curl or wget piped into a shell (matched: curl | bash)
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (44396 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 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

Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.

Source

GitHub

alexgreensh/repo-forensics · 203 stars · license a license file GitHub does not identify · pushed 2026-11-01 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_7v5wszbh6k4oshvu
GET https://markdownregistry.com/api/v1/resolve?ref=alexgreensh/repo-forensics/repo-forensics
GET https://markdownregistry.com/api/v1/blob/1be919b1f75d35677f405f5076ae6599b3f5229cc54343172d73036171a9c77a

Your AI assistant 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.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in alexgreensh/repo-forensics

Other files named repo-forensics

repo-forensics Cursor rule
alexgreensh/repo-forensics · .cursor/rules/repo-forensics.mdc · Vet untrusted repos, skills, MCP servers, and packages with repo-forensics before installing them.
git:20261022.c0a2e0a · audit A · 203 stars
repo-forensics SKILL.md skill
alexgreensh/repo-forensics · skills/repo-forensics/SKILL.md · Security forensics for git repos, AI skills, and MCP servers. Audits dependencies, detects prompt injection, credential…
git:20261022.e590f5c · audit C · 203 stars

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