bad-frontmatter rulesB
bad-frontmatter is agent-read markdown (rules) from yawlabs/ctxlint.
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
mdr add yawlabs/ctxlint/fixtures/frontmatter/.cursor/rules/bad-frontmatter.mdc@git:20260407.948a27amdr add yawlabs/ctxlint/fixtures/frontmatter/.cursor/rules/bad-frontmatter.mdc@sha256:f2d15cd6b3d48065Pin 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_o3mkp3obkomlyhfk)
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Versions
Audit of the latest version
- fail: Size between 200 bytes and 200 KB (72 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
yawlabs/ctxlint · 10 stars · license MIT · pushed 2026-09-15 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_o3mkp3obkomlyhfk GET https://markdownregistry.com/api/v1/resolve?ref=yawlabs/ctxlint/fixtures/frontmatter/.cursor/rules/bad-frontmatter.mdc GET https://markdownregistry.com/api/v1/blob/f2d15cd6b3d48065b3f2fe573678f57f7a5c33709d0abbcdb6bc7c7b4645a5aa
Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.