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 joneqian/claude-skills-suite --skill mysql-patternsgit clone --depth 1 https://github.com/joneqian/claude-skills-suiteWrote 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/joneqian/claude-skills-suite/mysql-patterns)<a href="https://agentmods.dev/skills/joneqian/claude-skills-suite/mysql-patterns"><img src="https://agentmods.dev/badge/skills/joneqian/claude-skills-suite/mysql-patterns/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/joneqian/claude-skills-suite/mysql-patterns"><img src="https://agentmods.dev/badge/skills/joneqian/claude-skills-suite/mysql-patterns.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00026 | $0.01683 |
| Opus 5.5 | $0.00010 | $0.00673 |
| Sonnet 5.5 | $0.00005 | $0.00337 |
| Haiku 4.5 | $0.00003 | $0.00168 |
Grade A, and why
mysql-patterns 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 215 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MySQL Patterns
Quick reference for MySQL best practices. For detailed guidance, use the mysql-database-reviewer agent.
When to Activate
- Writing SQL queries or migrations
- Designing database schemas
- Troubleshooting slow queries
- Setting up connection pooling
- Implementing multi-tenant isolation
Quick Reference
Index Cheat Sheet
| Query Pattern | Index Type | Example |
|---|---|---|
WHERE col = value |
B-tree (default) | CREATE INDEX idx ON t (col) |
WHERE col > value |
B-tree | CREATE INDEX idx ON t (col) |
WHERE a = x AND b > y |
Composite | CREATE INDEX idx ON t (a, b) |
MATCH(...) AGAINST(...) |
FULLTEXT | CREATE FULLTEXT INDEX ft ON t (col) |
| Long string prefix | Prefix | CREATE INDEX idx ON t (col(50)) |
| Geographic data | SPATIAL | CREATE SPATIAL INDEX idx ON t (col) |
Data Type Quick Reference
| Use Case | Correct Type | Avoid |
|---|---|---|
| IDs | bigint unsigned |
int, random UUID as PK |
| Business code | varchar(64) |
char, text |
| Strings | varchar(n) |
text for short strings |
| Timestamps | datetime |
timestamp (2038 problem) |
| Money | decimal(10,2) |
float, double |
| Flags | tinyint |
varchar, boolean literal |
| Status | tinyint |
enum (hard to modify) |
| JSON data | json |
text for structured data |
Common Patterns
Composite Index Order:
-- Equality columns first, then range columns
CREATE INDEX idx_status_created ON t_order (status, created_at);
-- Works for: WHERE status = 'pending' AND created_at > '2024-01-01'
-- Does NOT work for: WHERE created_at > '2024-01-01' alone
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.
- 1mo ago First seen · 215 lines · 26 tokens per session scan A 39eb7f1240ba
mysql-patterns is a skill published in the GitHub repository joneqian/claude-skills-suite (32 stars, last pushed 8mo ago), licensed MIT. It adds 26 tokens to every session and 1,683 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 2026-08-31.
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