agent-guard SKILL.md skillC

agent-guard from elliottwaves-20/agent-guard is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add elliottwaves-20/agent-guard/agent-guard@git:20261028.7526cb6

Pins git:20261028.7526cb6 in mdr.lock. Pin the fingerprint instead.

Audit grade
C, 15 of 17 checks passed
Kind
SKILL.md skill
Repository
elliottwaves-20/agent-guard
Path
SKILL.md
Versions recorded
11
Latest version
git:20261028.7526cb6, committed Oct 28, 2026
First version recorded
Oct 6, 2026
Size
34,998 bytes
Repository stars
5
License
MIT

This is a multi-file skill: individual entry points intentionally implement only their documented role while the package provides the workflow as a whole. Scan AI agent skills, plugins, and MCP servers for malicious code BEFORE installation — catches prompt injection, credential theft, data exfiltration, and backdoors. Skills and the static MCP source scan use NVIDIA SkillSpector (static patterns + taint tracking + YARA + live OSV.dev CVE lookup + LLM semantic analysis, which runs by default…

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

# agent-guard — scan first, install after

Scanner setup is an explicit bootstrap trust decision by the operator.
The setup scripts install trusted scanner tools and dependencies before any
target can be scanned; they do not constitute a prior security verdict for
the toolchain. Review setup separately. The scan-first workflow below applies
to target skills and packages, not to automatically provisioning the scanner.
Git installation requires the full scanned commit SHA. Package installation
examples require substituting the exact scanned package version; bare example
names are not installation approval. Existing destinations must be scanned
directly before reuse; the installer never silently substitutes their contents.

Skills and MCP servers are third-party code that runs with your user account's
permissions. A malicious one can read SSH keys, `.env` files, and browser
profiles, exfiltrate them, or hijack the agent itself through a poisoned
SKILL.md. This skill makes a security scan the mandatory first step of every
installation.

Because skills follow the open [SKILL.md standard](https://agentskills.io) and
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add elliottwaves-20/agent-guard/agent-guard@sha256:73fdabd624668d29

The line at the top of this page pins the label git:20261028.7526cb6, 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_tuz67m5irc56vn2s.svg)](https://markdownregistry.com/a/art_tuz67m5irc56vn2s)

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

Versions

The registry has recorded 11 versions of this file, between Oct 6, 2026 and Oct 28, 2026, about one every 2 days.

versioncommittedcommitsizeaudit
git:20261028.7526cb6 latest2026-10-28 7526cb6 34,998 BC view · diff
git:20261025.88444ba2026-10-25 88444ba 34,933 BC view · diff
git:20261025.e9252bc2026-10-25 e9252bc 34,656 BC view · diff
git:20261025.6dc51072026-10-25 6dc5107 34,457 BC view · diff
git:20261025.6e2d7e82026-10-25 6e2d7e8 34,343 BC view · diff
git:20261025.4b936b22026-10-25 4b936b2 34,245 BC view · diff
git:20261020.10ec54e2026-10-20 10ec54e 33,156 BC view · diff
git:20261012.86846382026-10-12 8684638 32,605 BC view · diff
git:20261011.e56b77f2026-10-11 e56b77f 32,715 BC view · diff
git:20261011.4b4c0902026-10-11 4b4c090 32,639 BC view · diff
git:20261006.5c8a5d02026-10-06 5c8a5d0 32,612 BC 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 curl or wget piped into a shell (matched: curl|bash)
  • fail: No instruction to read or print local credentials (matched: read SSH keys, `.env)
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (34998 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 recursive delete of root, home or parent
  • 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

elliottwaves-20/agent-guard · 5 stars · license MIT · pushed 2026-10-30 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_tuz67m5irc56vn2s
GET https://markdownregistry.com/api/v1/resolve?ref=elliottwaves-20/agent-guard/agent-guard
GET https://markdownregistry.com/api/v1/blob/73fdabd624668d2929614b490ec1e45a924c0acc1f546e0aa9241a37633dd5f7

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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