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 G1Joshi/Agent-Skills --skill mysqlgit clone --depth 1 https://github.com/G1Joshi/Agent-SkillsWrote 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/g1joshi/agent-skills/mysql)<a href="https://agentmods.dev/skills/g1joshi/agent-skills/mysql"><img src="https://agentmods.dev/badge/skills/g1joshi/agent-skills/mysql/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/g1joshi/agent-skills/mysql"><img src="https://agentmods.dev/badge/skills/g1joshi/agent-skills/mysql.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 | $0.00023 | $0.00481 |
| Opus 5 | $0.00012 | $0.00241 |
| Sonnet 5 | $0.00005 | $0.00096 |
| Haiku 4.5 | $0.00002 | $0.00048 |
Grade A, and why
mysql 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 9d 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
MySQL
MySQL is a widely used relational database management system (RDBMS). It is the "M" in the LAMP stack and powers huge platforms like Facebook and WordPress.
When to Use
- Web Applications: Standard for PHP/Laravel/Wordpress ecosystems.
- Read-Heavy Workloads: Historically very fast for simple read operations.
- Replication: Huge ecosystem of tools for Master-Slave replication and clustering (Galera, InnoDB Cluster).
Quick Start
-- Upsert (Insert or Update)
INSERT INTO users (id, name) VALUES (1, 'Jane')
ON DUPLICATE KEY UPDATE name = 'Jane';
Core Concepts
Storage Engines
- InnoDB: The default. Supports transactions (ACID), row-level locking, and foreign keys. Always use this.
- MyISAM: Legacy. Fast reads but table-level locking and no transactions. Avoid.
Explain
Prefix any query with EXPLAIN to see how MySQL executes it (indexes used, rows scanned).
EXPLAIN SELECT * FROM users WHERE email = '[email protected]';
Replication
MySQL replication is often asynchronous by default, meaning slaves might lag behind master.
Best Practices (2025)
Do:
- Use MySQL 8.4+: For LTS features like
EXPLAIN ANALYZEand CTE support. - Use
utf8mb4: The real UTF-8. The standardutf8in MySQL is a partial implementation (max 3 bytes). - Disable
mysql_native_password: In 8.4+, usecaching_sha2_passwordfor security.
Don't:
- Don't use MyISAM: It is effectively obsolete for modern apps.
- Don't store logic in Stored Procedures: Hard to version control and debug. Keep logic in the app layer.
References
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.
- 9d ago First seen · 59 lines · 23 tokens per session scan A 847c6a339154
mysql is a skill published in the GitHub repository G1Joshi/Agent-Skills (12 stars, last pushed 7mo ago), licensed MIT. It adds 23 tokens to every session and 481 once invoked, about $0.0001 per session on Opus 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.
Other skills, from other repositories
deprecation-and-migration
Manages deprecation and migration. Use when removing old systems, APIs, or features. Use when migrating users from one implementation to another. Use when migrating a database schema in production, such as renaming or dropping a column without downtime (expand/contract). Use when deciding whether to maintain or sunset…
notebook-kb
Use the notebook knowledge base (the local SQLite RAG /agy:notebook builds from a folder of documents) to do precise, grounded, cited work — total amounts by category, find every doc that mentions a person/organization, build a timeline, export a table — instead of re-reading prose and burning Claude's context.…
db-performance
PostgreSQL query performance — EXPLAIN ANALYZE, index design, pgstatstatements, slow query detection, connection pool tuning.
backup-restore
PostgreSQL backup and restore with pgBackRest — full/incremental/WAL, PITR, K8s CronJob scheduling, and restore verification.
migration-safety
Safe database migrations in production — expand-and-contract, lock-safe DDL, timing estimation, rollback SQL.
redis-operations
Redis operational runbooks — memory management, eviction policy, persistence config, Sentinel/Cluster, K8s-hosted Redis ops.