# Good Skill

> Format and validate CSV files. Use when the user asks to clean, deduplicate, or check a CSV before import.

- Skill: `efaimo-ai/good-skill` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add efaimo-ai/good-skill`
- Raw SKILL.md: https://api.skillmd.com/api/skills/efaimo-ai/good-skill/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Data & Analytics
- License: Apache-2.0
- Author: efaimo-ai (https://skillmd.com/u/efaimo-ai)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/efaimo-ai/good-skill

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# CSV cleanup

Use this skill when the user wants to tidy a CSV file.

## Steps
1. Read the file and detect the delimiter.
2. Trim whitespace from every cell.
3. Drop fully duplicate rows.
4. Report row and column counts.

See [the reference](reference.md) for edge cases.