agent-sh/agnix · tests/fixtures/skills/missing-frontmatter/SKILL.md

missing-frontmatter skillC

missing-frontmatter is agent-read markdown (skill) from agent-sh/agnix.

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.

How to install

Latest version
mdr add agent-sh/agnix/missing-frontmatter@git:20260202.87b6013
Exact content
mdr add agent-sh/agnix/missing-frontmatter@sha256:5aa21cd4a52c4249

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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_4rwrsanrhy27qjc2.svg)](https://markdownregistry.com/a/art_4rwrsanrhy27qjc2)

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Versions

versioncommittedcommitsizeaudit
git:20260202.87b6013 latest2026-02-02 87b6013 21 BC view

Audit of the latest version

C  13 of 17 checks passed. Deterministic, no model, same answer every run.
  • fail: Frontmatter block present
  • fail: Frontmatter declares a name
  • fail: Frontmatter declares a description
  • fail: Size between 200 bytes and 200 KB (21 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

agent-sh/agnix · 418 stars · license Apache-2.0 · pushed 2026-09-16 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_4rwrsanrhy27qjc2
GET https://markdownregistry.com/api/v1/resolve?ref=agent-sh/agnix/missing-frontmatter
GET https://markdownregistry.com/api/v1/blob/5aa21cd4a52c424971614382af90d4bb5e3f88d71ff7ab9bbd30da72e917333b

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.