r-cran-extrachecks SKILL.md skillA
r-cran-extrachecks from posit-dev/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add posit-dev/skills/r-cran-extrachecks@v1.1Pins v1.1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- posit-dev/skills
- Path
r-lib/r-cran-extrachecks/SKILL.md- Versions recorded
- 2
- Latest version
- v1.1, committed Oct 7, 2026
- First version recorded
- Oct 6, 2026
- Size
- 16,771 bytes
- Repository stars
- 556
- License
- MIT
Prepare R packages for CRAN submission by checking for common ad-hoc requirements not caught by devtools::check(). Use when: (1) Preparing a package for first CRAN release, (2) Preparing a package update for CRAN resubmission, (3) Reviewing a package to ensure CRAN compliance, (4) Responding to CRAN reviewer feedback. Covers documentation requirements, DESCRIPTION field standards, URL validation, examples, and administrative requirements.
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
# CRAN Extra Checks
Help R package developers prepare packages for CRAN submission by systematically checking for common ad-hoc requirements that CRAN reviewers enforce but `devtools::check()` doesn't catch.
## Workflow
1. **Initial Assessment**: Ask user if this is first submission or resubmission
2. **Run Standard Checklist**: Work through each item systematically (see below)
3. **Identify Issues**: As you review files, note specific problems
4. **Propose Fixes**: Suggest specific changes for each issue found
5. **Implement Changes**: Make edits only when user approves
6. **Verify**: Confirm all changes are complete
## Standard CRAN Preparation Checklist
Work through these items systematically:
1. **Create NEWS.md**: Run `usethis::use_news_md()` if not already present
2. **Create cran-comments.md**: Run `usethis::use_cran_comments()` if not already present
3. **Review README**:
- Ensure it includes install instructions that will be valid when the package is accepted to CRAN (usually `install.packages("pkgname")`).
…Read the whole file at its exact version.
How to install
mdr add posit-dev/skills/r-cran-extrachecks@sha256:b036fd03f70811b1The line at the top of this page pins the label v1.1, 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_i4e4x6yw5drlpqv7)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Oct 6, 2026 and Oct 7, 2026, more than one a day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.1 latest | 2026-10-07 | e20b71b | 16,771 B | A | view · diff |
| v1.0 | 2026-10-06 | 0300946 | 14,855 B | A | view |
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 (16771 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
posit-dev/skills · 556 stars · license MIT · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_i4e4x6yw5drlpqv7 GET https://markdownregistry.com/api/v1/resolve?ref=posit-dev/skills/r-cran-extrachecks GET https://markdownregistry.com/api/v1/blob/b036fd03f70811b1542a99d673f44cfa23309ab8c5004b8abb52350401515265
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.