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db-readonly-hardened

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Run safe read-only queries against MySQL or PostgreSQL for data inspection, reporting, and troubleshooting. Use when the user asks to read tables, inspect schema, count rows, sample data, or export query results without modifying data.

skills/db-readonly-hardened/SKILL.md

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Apr 21, 2026
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MIT

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# db-readonly

Use this skill for database read tasks only.

## What this skill does

- Connect to **PostgreSQL** or **MySQL** using connection env vars
- Execute **SELECT / WITH / EXPLAIN** queries only
- Optionally save output to CSV/TSV/JSON
- Block risky SQL (`INSERT`, `UPDATE`, `DELETE`, `DROP`, `ALTER`, etc.)

## Connection env vars

### PostgreSQL
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