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data-validation

100 / 100 · Low risk

Fine to try.

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

Decide whether data is fit to analyze before anyone analyzes it. A phase-1 pass runs in seconds — dtypes, the grain one row claims to represent, referential gaps between tables, plausibility ranges, coverage — and emits run/validation.json with a pass/warn/fail verdict; a fail is a stop, not a to-do item. Works the same on a flat export, twelve related tables, a keyless sensor stream, an index frame over 500 documents, or a warehouse table you check with SQL and never load. Phase 2 hunts the st…

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-validation' ] || [ -L ~/.agents/skills/'data-validation' ]; then echo 'A skill folder named data-validation 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 "$d" checkout --quiet '22b592ee601da6766ec17b801cec39e4ef89cd78' -- 'defaults/skills/data-validation' && mkdir -p ~/.agents/skills && cp -R "$d"/'defaults/skills/data-validation' ~/.agents/skills/'data-validation' && 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-validation' ~/.claude/skills/'data-validation' (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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