A collection of R tools and practices for building, testing, documenting, and maintaining R packages. It covers tools such as devtools, usethis, roxygen2, testthat, code checks, formatting, and several R object systems.

Use it to create package files, generate documentation, run tests and coverage checks, format and inspect code, build package websites, and work with R classes.

It brings common package-development tasks into one workflow, helping developers check code and keep documentation and tests alongside the package.

r-dev — Skill for Claude Code and Codex by LeoLin990405

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 LeoLin990405/r-analytics-skill --skill r-dev

Clone the repo

git clone --depth 1 https://github.com/LeoLin990405/r-analytics-skill

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/leolin990405/r-analytics-skill/r-dev/github.svg)](https://agentmods.dev/skills/leolin990405/r-analytics-skill/r-dev)

Your own site

<a href="https://agentmods.dev/skills/leolin990405/r-analytics-skill/r-dev"><img src="https://agentmods.dev/badge/skills/leolin990405/r-analytics-skill/r-dev/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/leolin990405/r-analytics-skill/r-dev"><img src="https://agentmods.dev/badge/skills/leolin990405/r-analytics-skill/r-dev.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 23 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,233 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.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00023	$0.01233
Opus 5.5	$0.00009	$0.00493
Sonnet 5.5	$0.00005	$0.00247
Haiku 4.5	$0.00002	$0.00123

Measured 1mo ago against content hash a0cf157eab74, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

r-dev 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 1mo 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.

sub-skills/r-dev/SKILL.md · 209 lines

How it starts

The opening of the file, as written. The whole thing — 209 lines — stays where its author put it; the contents beside it link to each section on GitHub.

R Development Skill

Sub-skills

Sub-skill	Description
r-dev-package	devtools, usethis, roxygen2
r-dev-testing	testthat, covr, mockery
r-dev-docs	pkgdown, vignettes, README
r-dev-oop	R6, S3, S4 classes

R package development and tooling.

Package Development

Package	Description
devtools ★	Package development tools
usethis ★	Workflow automation
roxygen2 ★	Documentation from comments
pkgdown	Package websites
testthat ★	Unit testing
covr	Test coverage

Code Quality

Package	Description
lintr ★	Static code analysis
styler	Code formatting
goodpractice	Package best practices

Documentation

Package	Description
roxygen2 ★	In-source documentation
sinew	Generate roxygen skeletons
staticdocs	Static HTML docs

OOP Systems

Package	Description
R6 ★	Encapsulated OOP
S7	Next-gen OOP (experimental)

Debugging & Profiling

Package	Description
pryr	Understand R internals
lineprof	Line profiling
profvis	Interactive profiling

Environment & Reproducibility

Package	Description
renv ★	Project environments
box	Modern module system
import	Import mechanism
installr	Install software (Windows)

Async & Promises

Package	Description
promises	Async programming
future	Parallel/distributed processing

Deployment

Package	Description
Rocker	Docker configurations
drat	R repositories on GitHub

IDEs & Editors

Tool	Description
RStudio ★	Full-featured IDE
VSCode + vscode-R	VS Code support
radian	Modern R console
IRkernel	Jupyter kernel
Nvim-R	Neovim plugin

Read the full file on GitHub · 209 lines

Files

What ships with it

31 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

1mo ago First seen · 209 lines · 23 tokens per session scan A a0cf157eab74

Subscribe to this mod's changes

r-dev is a skill published in the GitHub repository LeoLin990405/r-analytics-skill (5 stars, last pushed 7mo ago), licensed MIT. It adds 23 tokens to every session and 1,233 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-31.

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