Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add aj-geddes/useful-ai-prompts --skill database-performance-debugginggit clone --depth 1 https://github.com/aj-geddes/useful-ai-promptsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/database-performance-debugging)<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/database-performance-debugging"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/database-performance-debugging/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/database-performance-debugging"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/database-performance-debugging.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00027 | $0.00475 |
| Opus 5.5 | $0.00011 | $0.00190 |
| Sonnet 5.5 | $0.00005 | $0.00095 |
| Haiku 4.5 | $0.00003 | $0.00047 |
Grade A, and why
database-performance-debugging scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Database Performance Debugging
Table of Contents
Overview
Database performance issues directly impact application responsiveness. Debugging focuses on identifying slow queries and optimizing execution plans.
When to Use
- Slow application response times
- High database CPU
- Slow queries identified
- Performance regression
- Under load stress
Quick Start
Minimal working example:
-- Enable slow query log (MySQL)
SET GLOBAL slow_query_log = 'ON';
SET GLOBAL long_query_time = 0.5;
-- View slow queries
SHOW GLOBAL STATUS LIKE 'Slow_queries';
SELECT * FROM mysql.slow_log;
-- PostgreSQL slow queries
CREATE EXTENSION pg_stat_statements;
SELECT mean_exec_time, calls, query
FROM pg_stat_statements
ORDER BY mean_exec_time DESC LIMIT 10;
-- SQL Server slow queries
SELECT TOP 10
execution_count,
total_elapsed_time,
statement_text
FROM sys.dm_exec_query_stats
ORDER BY total_elapsed_time DESC;
-- Query profiling
EXPLAIN ANALYZE
SELECT * FROM orders WHERE user_id = 123;
// ... (see reference guides for full implementation)
Reference Guides
Detailed implementations in the references/ directory:
| Guide | Contents |
|---|---|
| Identify Slow Queries | Identify Slow Queries |
| Common Issues & Solutions | Common Issues & Solutions |
| Execution Plan Analysis | Execution Plan Analysis |
| Debugging Process | Debugging Process |
Best Practices
✅ DO
- Follow established patterns and conventions
- Write clean, maintainable code
- Add appropriate documentation
- Test thoroughly before deploying
❌ DON'T
- Skip testing or validation
- Ignore error handling
- Hard-code configuration values
What ships with it
6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 88 lines · 27 tokens per session scan A 8bcbe80dc3bb
database-performance-debugging is a skill published in the GitHub repository aj-geddes/useful-ai-prompts (376 stars, last pushed 8mo ago), licensed MIT. It adds 27 tokens to every session and 475 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
database-performance-debugging compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| database-performance-debuggingaj-geddes/useful-ai-prompts | Skill | 376 | 8mo ago | MIT | A | 27 | Claude Code, Codex |
| reproduce-buggoogleapis/mcp-toolbox | Skill | 17k | yesterday | Apache-2.0 | A | 130 | Claude Code, Codex |
| triage-issuesgoogleapis/mcp-toolbox | Skill | 17k | yesterday | Apache-2.0 | A | 164 | Claude Code, Codex |
| postgresql-indexingprowler-cloud/prowler | Skill | 15k | yesterday | Apache-2.0 | A | 108 | Claude Code |
| graphjin-evaldosco/graphjin | Skill | 3.2k | 5d ago | Apache-2.0 | A | 27 | Claude Code, Codex |
| axiom-audit-grdb-performanceCharlesWiltgen/Axiom | Skill | 1.3k | yesterday | MIT | A | 43 | Codex |
| django-perf-reviewgetsentry/skills | Skill | 1.1k | yesterday | Apache-2.0 | A | 55 | Claude Code |