r-util-code-scan SKILL.md skillA
r-util-code-scan from rfxn/rdf is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add rfxn/rdf/r-util-code-scan@git:20260902.42a192dPins git:20260902.42a192d in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- rfxn/rdf
- Path
adapters/claude-plugin/output/skills/r-util-code-scan/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260902.42a192d, committed Sep 2, 2026
- Size
- 4,074 bytes
- Repository stars
- 20
- License
- GPL-2.0
Structured pattern-class bug finder. Searches project files for instances.
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
Structured pattern-class bug finder. Searches project files for instances of known anti-patterns or a custom pattern. Groups results by file and function, cross-references AUDIT.md for tracked instances. ## Arguments - `$ARGUMENTS` — required: a pattern class name from the built-in library, `all` for all patterns, or a custom description ## Setup Read `.rdf/governance/index.md` to identify: - Project files to scan (from governance/architecture.md) - Project-specific anti-patterns (from governance/anti-patterns.md) - Existing audit findings (from AUDIT.md if present) ## Built-in Pattern Library Universal patterns applicable to any shell project: | Pattern Class | Pattern | Description | |---|---|---| | `backtick-usage` | `` `...` `` | Backtick command substitution | | `unquoted-var` | `$var` without quotes in command context | Unquoted variable expansion | | `bare-which` | `\bwhich\b` | Bare `which` instead of `command -v` | | `deprecated-egrep` | `\begrep\b` | Deprecated `egrep` instead of `grep -E` | | `dollar-bracket` | `$[` | Old-style arithmetic instead of `$(())` | | `for-in-cat` | `for .* in \$\(cat` | Unsafe file reading pattern | …
Read the whole file at its exact version.
How to install
mdr add rfxn/rdf/r-util-code-scan@sha256:9008aa7a59559d72The line at the top of this page pins the label git:20260902.42a192d, 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.
[](https://markdownregistry.com/a/art_bktkxk5xgdb27hxw)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 2, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4074 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
rfxn/rdf · 20 stars · license GPL-2.0 · pushed 2026-10-28 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_bktkxk5xgdb27hxw GET https://markdownregistry.com/api/v1/resolve?ref=rfxn/rdf/r-util-code-scan GET https://markdownregistry.com/api/v1/blob/9008aa7a59559d72d9329b4ec3d533384d8ea38b8a1e0475fa00db5e66ba6f18
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.