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Data Cleaning

Profiles a messy CSV and reports what would break a join.

Single skill Verified 10 Nov datacodinganalysis

Use it for

First pass on an export before anyone builds on it

Skip it if

Silent transformation — it reports problems and proposes fixes, it does not rewrite data

What it is

Profiles a CSV: types per column, duplicate keys, empty rates, inconsistent date formats, and values that would silently drop rows in a join. The output is a report plus a proposed cleaning plan; applying it stays a separate, reviewable step.

Install

Clone the repository, then copy the skill folder into your agent's skills directory — ~/.claude/skills/ for Claude Code. Skills are plain files: no build step, no daemon.

Terminal
npx skills add data-cleaning

How to judge it

Read the SKILL.md before you install. A good skill states when it applies, what it must not do, and how to verify the result. A skill that only lists adjectives will change the agent's tone without improving its output — skip those.

Other research skills

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  • SQL Analyst — Turns a business question into one reviewed query.

Tools it pairs with

All tools

Servers it runs on

All servers
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