Data Cleanup Day

Profile CSV, Parquet and JSON at speed with DuckDB and Polars, then audit missingness, outliers and leakage before you trust a number. Finish with a formula-correct Excel workbook and charts worth showing.

7 skills

XLSX Creation & Editing

Official

Official Anthropic skill for building, editing, and validating Excel files with real formulas, professional formatting, and automated recalculation checks.

Docs & Office★ 167,132AI score 10/10

Data Scientist (High-Performance DuckDB/Polars Analysis)

A skill that analyzes CSV, Parquet, and JSON data by intelligently routing each operation to either DuckDB or Polars for maximum speed.

Data & Analytics★ 67,531AI score 9/10

Seaborn Statistical Visualization

Generates correct, up-to-date seaborn 0.13 code for distribution, relationship, and categorical plots from pandas DataFrames.

Data & Analytics★ 33,030AI score 9/10

Exploratory Data Analysis (Safe Mode)

A fail-closed EDA skill that profiles authorized local scientific files, audits missingness, leakage and outliers, and drafts a rigorous report without exposing raw values.

Data & Analytics★ 33,030AI score 9/10

Polars DataFrame Guide

A skill that helps Claude write fast, idiomatic Polars code using its expression API, lazy engine, and pandas migration mappings.

Data & Analytics★ 33,030AI score 9/10

Matplotlib Visualization Guide

A skill that steers Claude toward idiomatic Matplotlib code for publication-quality figures.

Data & Analytics★ 33,030AI score 9/10

Statistical Analysis

An end-to-end guide for research statistics: picking the right test, verifying assumptions, reporting effect sizes, and writing APA-style results.

Data & Analytics★ 33,030AI score 9/10