r-package-installation-verification

r-package-installation-verification is a skill for Claude Code, Codex from HolobiomicsLab/asb-skill-collections. It costs 48 tokens per session (1,846 once invoked), scanned A, original, Apache-2.0.

A check that confirms required R packages can be loaded in the active environment. R is a programming language commonly used for statistics and scientific plots; the check covers ggplot2, RColorBrewer, and grid.

In plain words
What is it for?
Use it after changing an R setup with conda, a package manager, or a container, and before running workflows such as Hi-C visualization or normalization.
Why use it?
It catches missing or unusable packages before an R-dependent pipeline fails. It verifies existing installations but does not install packages.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it after changing an R setup with conda, a package manager, or a container, and before running workflows such as Hi-C visualization or normalization.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/holobiomicslab/asb-skill-collections/r-package-installation-verification
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add HolobiomicsLab/asb-skill-collections --skill r-package-installation-verification
Clone the repo
git clone --depth 1 https://github.com/HolobiomicsLab/asb-skill-collections

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for r-package-installation-verification

README.md
[![agentmods](https://agentmods.dev/badge/skills/holobiomicslab/asb-skill-collections/r-package-installation-verification/github.svg)](https://agentmods.dev/skills/holobiomicslab/asb-skill-collections/r-package-installation-verification)
Your own site
<a href="https://agentmods.dev/skills/holobiomicslab/asb-skill-collections/r-package-installation-verification"><img src="https://agentmods.dev/badge/skills/holobiomicslab/asb-skill-collections/r-package-installation-verification/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for r-package-installation-verification

Your own site · 80×15
<a href="https://agentmods.dev/skills/holobiomicslab/asb-skill-collections/r-package-installation-verification"><img src="https://agentmods.dev/badge/skills/holobiomicslab/asb-skill-collections/r-package-installation-verification.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,846 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Anti-Refusal · line 97
    Skill instructs the agent to omit warnings, disclaimers, or ethical commentary. Stripping safety caveats hides risk from the user and is a common jailbreak preamble.
    Fix: Remove instructions that suppress warnings, disclaimers, or ethical commentary. Let the agent surface safety-relevant caveats to the user.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00048 $0.01846
Opus 5 $0.00024 $0.00923
Sonnet 5 $0.00010 $0.00369
Haiku 4.5 $0.00005 $0.00185

Measured 4d ago against content hash a58a6df6953b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

r-package-installation-verification scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

collections/epigenomics/v1/skills/r-package-installation-verification/SKILL.md · 117 lines

How it starts

The opening of the file, as written. The whole thing — 117 lines — stays where its author put it; the contents beside it link to each section on GitHub.

R package installation verification

Summary

Verify that required R packages (ggplot2, RColorBrewer, grid) are correctly installed and importable in the active R environment. This skill ensures that downstream R-based analysis steps in bioinformatics pipelines (such as HiC-Pro's visualization and normalization workflows) will succeed.

When to use

After installing R or modifying an R environment via conda, package managers, or container images; before running any pipeline step that depends on R packages for statistical analysis, visualization, or data normalization. Particularly critical when setting up HiC-Pro or similar pipelines that require specific R package versions (e.g., ggplot2 >2.2.1) for Hi-C contact map plotting and quality-control reporting.

When NOT to use

  • R packages are already confirmed to be installed and functional in the current session (re-verification is redundant).
  • The pipeline does not use R (e.g., pure Python workflows without R dependencies).
  • Installing new R packages — this skill verifies existing installations, not installs them; use install.packages() or conda install for installation.

Inputs

  • R environment (active shell or conda environment)
  • R installation path or conda environment specification
  • List of required package names and minimum version constraints (e.g., ggplot2 >2.2.1)

Outputs

  • Verification report listing each package name, load status (success/failure), and installed version
  • Error messages or warnings if any package failed to load
  • Summary of R version and library paths used

How to apply

Launch an R session (interactive or via Rscript) and attempt to load each required package using the library() function. For HiC-Pro, verify ggplot2 (>2.2.1), RColorBrewer, and grid packages are available and callable. If a package fails to load, check the R version (must match pipeline requirements), verify the package was installed to the correct library path, and re-install if necessary via install.packages() or conda. Document the successful load of each package and its version number. The rationale is that R packages installed but not in the R_LIBPATHS or with incompatible versions will cause silent or cryptic runtime failures downstream; early verification prevents wasted compute.

Read the full file on GitHub · 117 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 117 lines · 48 tokens per session scan A a58a6df6953b

Subscribe to this mod's changes

r-package-installation-verification is a skill published in the GitHub repository HolobiomicsLab/asb-skill-collections (15 stars, last pushed today), licensed Apache-2.0. It adds 48 tokens to every session and 1,846 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-06.

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