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data-cleaning

100 / 100 · Low risk

Fine to try.

By pymc-labs/daimon (GitHub) · data · 24 stars · scanned at commit 22b592e

Mutate data without destroying the evidence — dedup, dtype coercion, missing-value decisions, outlier flagging, category and unit normalisation, joins, pivots and aggregations to a new grain, and columns the source does not contain — appending a row to run/changelog.jsonl for every operation, whether what you write is one parquet file, one part per table, parquet parts of a log too large to load, a saved warehouse query, or cleaned files plus their index frame. The source is never edited in pla…

Works with any agent that supports SKILL.md skills.

What this skill can do

We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'data-cleaning' ] || [ -L ~/.agents/skills/'data-cleaning' ]; then echo 'A skill folder named data-cleaning already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/pymc-labs/daimon' "$d" && git -C "$d" checkout --quiet '22b592ee601da6766ec17b801cec39e4ef89cd78' -- 'defaults/skills/data-cleaning' && mkdir -p ~/.agents/skills && cp -R "$d"/'defaults/skills/data-cleaning' ~/.agents/skills/'data-cleaning' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'data-cleaning' ~/.claude/skills/'data-cleaning' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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Score history