Skip to content
TrustedSkillsbeta
Back to all skills

Cran Extrachecks

Listed
posit-dev·vlatest·backend·MIT

Cran Extrachecks analyzes your Node.js project's `package.json` to identify potential dependency vulnerabilities and outdated versions, boosting security & stability.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

Installs under a different name. Its SKILL.md names it r-cran-extrachecks, not the name it is listed under, so the command below uses that name.
  1. 1

    Run this in your project

    terminal
    $ npx skills add posit-dev/skills --skill r-cran-extrachecks -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

posit-dev

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill failed 1 of 6 checks. A failure is not proof of bad intent; it means something in the code needs a human to look at it before you run it.

  • No undeclared network calls: failed

    Contacts 1 host that is neither well-known infrastructure nor declared in the skill's frontmatter: paleobiodb.org.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

    Hosts contacted

    paleobiodb.orgundeclared

    What it found

    • r-lib/cran-extrachecks/SKILL.md:259contacts paleobiodb.org
      URL: http://paleobiodb.org/

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned posit-dev/skills at 1bb49b8eec.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
1bb49b8eec
Manifest
r-lib/cran-extrachecks/SKILL.md
Scanned
1 file, 422 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

The cran-extrachecks skill enables AI agents to perform additional checks on CRAN (Comprehensive R Archive Network) packages beyond standard metadata validation. It helps ensure package integrity, security, and compliance with specific community standards before installation or usage in production environments.

When to use it

  • Before deploying a new R package in a regulated environment where strict security policies apply.
  • When auditing third-party R libraries for known vulnerabilities or deprecated dependencies.
  • During CI/CD pipelines to automatically flag packages failing custom quality gates.
  • When verifying that a package adheres to specific community guidelines not covered by default checks.

Key capabilities

  • Performs extended validation beyond standard CRAN metadata.
  • Checks for potential security issues and deprecated components.
  • Validates compliance with additional community-defined standards.
  • Provides detailed reports on package health and reliability.

Example prompts

  • "Run extra checks on the 'dplyr' package before installing it in our production R environment."
  • "Audit this CRAN package for known vulnerabilities and deprecated functions using cran-extrachecks."
  • "Validate that the 'ggplot2' package meets our custom security and quality standards."

Tips & gotchas

Ensure your AI agent has network access to fetch the latest CRAN package metadata before running checks. This skill is designed for R packages only; attempting to use it with non-R libraries will result in errors or incomplete validation.