r-data

r-data is a skill for Claude Code, Codex from LeoLin990405/r-analytics-skill. It costs 48 tokens per session (978 once invoked), scanned A, original, MIT.

A collection of R guidance for changing data, reading common file formats, and connecting to databases. It covers tools such as dplyr, data.table, CSV, Excel, JSON, Parquet, SQL, MongoDB, and Redis.

In plain words
What is it for?
Use it to clean and reshape tables, manipulate dates and text, read or write files, work with large datasets, and connect R code to database systems.
Why use it?
It gives one place to choose and use R tools for everyday data preparation and storage tasks.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/leolin990405/r-analytics-skill/r-data
Any agent
npx skills add LeoLin990405/r-analytics-skill --skill r-data
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.

agentmods badge for r-data

README.md
[![agentmods](https://agentmods.dev/badge/skills/leolin990405/r-analytics-skill/r-data.svg)](https://agentmods.dev/skills/leolin990405/r-analytics-skill/r-data)
Your own site
<a href="https://agentmods.dev/skills/leolin990405/r-analytics-skill/r-data"><img src="https://agentmods.dev/badge/skills/leolin990405/r-analytics-skill/r-data.svg" alt="Measured on agentmods" 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 978 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00048 $0.00978
Opus 5 $0.00024 $0.00489
Sonnet 5 $0.00010 $0.00196
Haiku 4.5 $0.00005 $0.00098

Measured 5d ago against content hash dc87d02d3716, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

r-data 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 5d 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-data/SKILL.md · 114 lines

How it starts

The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.

R Data Skill

Sub-skills

Sub-skill Description
r-data-manipulation dplyr, data.table, tidyr
r-data-formats CSV, Excel, JSON, Arrow, Parquet
r-data-database SQL, MongoDB, Redis connections

Data manipulation, formats, and database management in R.

Data Manipulation

Package Description
dplyr Fast data frames manipulation and database query
data.table Fast manipulation with concise syntax
tidyr Tidy messy data with spread/gather
reshape2 Flexible reshape and aggregate
broom Convert models to tidy data frames
tidyverse Meta-package for data science
lubridate Date/time manipulation
stringr Consistent string processing
stringi ICU-based string processing
fuzzyjoin Join on inexact matching
rlist Non-tabular data manipulation
bigmemory Shared memory matrices
snakecase Case conversion
DataExplorer Fast EDA with minimum code

Data Formats

Package Description
arrow Apache Arrow interface
fst Lightning fast serialization
feather Fast binary data frame storage
readr Fast tabular data reading
readxl Read Excel files
haven Read SPSS, Stata, SAS
jsonlite JSON parsing
vroom Fast delimited file reading
rio Swiss-Army Knife for Data I/O
qs Quick serialization
writexl Write Excel files
yaml YAML conversion
readODS Read OpenDocument Spreadsheets
RcppTOML TOML file parsing

Database Management

Package Description
DBI Common database interface
odbc ODBC connections (DBI interface)
RSQLite SQLite interface
RPostgres PostgreSQL (DBI-compliant)
RMariaDB MariaDB/MySQL interface
RMySQL MySQL interface
ROracle Oracle database interface
RODBC ODBC database access
RJDBC JDBC interface
mongolite MongoDB streaming client
rmongodb MongoDB driver
redux Redis client
elastic Elasticsearch HTTP API
RNeo4j Neo4j graph database
RCassandra Apache Cassandra interface
RHive Apache Hive integration
rpostgis PostGIS spatial interface

Read the full file on GitHub · 114 lines

Files

What ships with it

44 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.

  1. 5d ago First seen · 114 lines · 48 tokens per session scan A dc87d02d3716

Subscribe to this mod's changes

r-data is a skill published in the GitHub repository LeoLin990405/r-analytics-skill (5 stars, last pushed 5mo ago), licensed MIT. It adds 48 tokens to every session and 978 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 2026-08-31.

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