no-frontmatter is agent-read markdown (skill) from muselinn/musepi.
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
# No Frontmatter
This skill has no YAML frontmatter at all.
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.
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 (61 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
muselinn/musepi · 17 stars · license MIT · pushed 2026-09-23 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_uojkawespo5f2iqn
GET https://markdownregistry.com/api/v1/resolve?ref=muselinn/musepi/no-frontmatter
GET https://markdownregistry.com/api/v1/blob/e5ca5b4ffb7aaada8b4decc54fc4af732de355786ef54d38db97bb9f75d25672
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.
muselinn/musepi · .musepi/skills/tool-prompt-optimization/SKILL.md · Optimize the description prompts an AI agent reads to learn its built-in tools (the `.md` files under prompts/tools/)…
