db-index-hygiene

Audit relational database indexes for redundancy and unused indexes.

18|4|Updated Jun 16, 2026

Search Tags:#indexing #database #performance optimization #database health #database audit

Ready to run

npx skills add https://github.com/Hainrixz/claude-db --skill db-index-hygiene

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: db-index-hygiene
Source: https://github.com/Hainrixz/claude-db/tree/main/skills/db-index-hygiene
Command: npx skills add https://github.com/Hainrixz/claude-db --skill db-index-hygiene

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) components.

What problem does it solve?

This Skill audits and optimizes database indexes, eliminating redundancy and unused indexes to improve database performance and scale.

Core Features & Use Cases

Index Audit: Identifies and reports on exact duplicates, redundant prefix indexes, and unused indexes.
Performance Improvement: Removes unnecessary indexes to enhance write performance and reduce storage costs.
Use Case: Use this Skill to ensure your database maintains optimal index health, especially in relational databases, and to prepare for scaling up.

Quick Start

Run the db-index-hygiene skill to analyze index health in your database.

Frequently Asked Questions about db-index-hygiene

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I find unused and redundant indexes in a relational database?▼

To find unused and redundant indexes in a relational database, run an index audit that scans the database system's catalog and usage statistics to identify exact duplicates, overlapping prefix indexes, and indexes with zero reads.

What is database index hygiene and why is it important for scaling?▼

Database index hygiene is the practice of removing unused and redundant indexes to maintain optimal database health. It is important for scaling because it reduces write amplification and storage costs, directly improving overall performance.

How do I audit database index health without impacting write performance?▼

You audit database index health by analyzing the database system's catalog and stats to detect unnecessary indexes. Removing these unused structures reduces write amplification, which actively improves rather than impacts write performance.

Does an index audit require direct access to the database system catalog?▼

Yes, an index audit requires direct access to the database system's catalog and statistics. This access is necessary to accurately detect redundant prefix indexes and track whether existing indexes are actually being used by queries.

What are the limitations of detecting redundant prefix indexes in relational databases?▼

Detecting redundant prefix indexes relies entirely on the accuracy of the database system's catalog and current statistics. A limitation is that recently created indexes may not have accumulated enough usage stats to be accurately classified as redundant or unused.