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.
npx agentmods add skills/leolin990405/r-analytics-skill/r-devnpx skills add LeoLin990405/r-analytics-skill --skill r-devgit clone --depth 1 https://github.com/LeoLin990405/r-analytics-skillWrote 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.
[](https://agentmods.dev/skills/leolin990405/r-analytics-skill/r-dev)<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="Measured on agentmods" height="20"></a>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 | $0.00023 | $0.01233 |
| Opus 5 | $0.00012 | $0.00616 |
| Sonnet 5 | $0.00005 | $0.00247 |
| Haiku 4.5 | $0.00002 | $0.00123 |
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 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.
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 |
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.
- r-dev-docs/SKILL.md 2.0 KB
- r-dev-oop/R6/SKILL.md 1.8 KB
- r-dev-oop/SKILL.md 2.5 KB
- r-dev-package/box/SKILL.md 3.3 KB
- r-dev-package/covr/SKILL.md 1.7 KB
- r-dev-package/devtools/SKILL.md 1.9 KB
- r-dev-package/lintr/SKILL.md 3.5 KB
- r-dev-package/pkgdown/SKILL.md 1.4 KB
- r-dev-package/pryr/SKILL.md 2.4 KB
- r-dev-package/rcmdcheck/SKILL.md 1.5 KB
- r-dev-package/renv/SKILL.md 3.1 KB
- r-dev-package/roxygen2/SKILL.md 1.5 KB
- r-dev-package/SKILL.md 1.7 KB
- r-dev-package/styler/SKILL.md 3.3 KB
- r-dev-package/testthat/SKILL.md 2.2 KB
- r-dev-package/usethis/SKILL.md 1.4 KB
- r-dev-profiling/bench/SKILL.md 1.7 KB
- r-dev-profiling/lobstr/SKILL.md 1.5 KB
- r-dev-profiling/microbenchmark/SKILL.md 1.7 KB
- r-dev-profiling/profvis/SKILL.md 1.6 KB
- r-dev-profiling/SKILL.md 414 B
- r-dev-testing/covr/SKILL.md 1.5 KB
- r-dev-testing/mockery/SKILL.md 1.7 KB
- r-dev-testing/SKILL.md 1.8 KB
- r-dev-testing/testthat/SKILL.md 2.9 KB
- sub-skills/r-dev-oop/sub-skills/R6/SKILL.md 1.8 KB
- sub-skills/r-dev-package/sub-skills/pkgdown/SKILL.md 1.4 KB
- sub-skills/r-dev-package/sub-skills/roxygen2/SKILL.md 1.5 KB
- sub-skills/r-dev-package/sub-skills/usethis/SKILL.md 1.4 KB
- sub-skills/r-dev-testing/sub-skills/covr/SKILL.md 1.5 KB
- sub-skills/r-dev-testing/sub-skills/mockery/SKILL.md 1.7 KB
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.
- 4d ago First seen · 209 lines · 23 tokens per session scan A a0cf157eab74
r-dev is a skill published in the GitHub repository LeoLin990405/r-analytics-skill (5 stars, last pushed 5mo ago), licensed MIT. It adds 23 tokens to every session and 1,233 once invoked, about $0.0001 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 2026-08-31.
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