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 agentmods add agents/0xfurai/claude-code-subagents/mysql-expertgit clone --depth 1 https://github.com/0xfurai/claude-code-subagentsWrote 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/agents/0xfurai/claude-code-subagents/mysql-expert)<a href="https://agentmods.dev/agents/0xfurai/claude-code-subagents/mysql-expert"><img src="https://agentmods.dev/badge/agents/0xfurai/claude-code-subagents/mysql-expert.svg" alt="Measured on agentmods" 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 | $0.00027 | $0.00373 |
| Opus 5 | $0.00014 | $0.00187 |
| Sonnet 5 | $0.00005 | $0.00075 |
| Haiku 4.5 | $0.00003 | $0.00037 |
Grade A, and why
mysql-expert 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 2d 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
Focus Areas
- MySQL query optimization techniques
- Indexing strategies for performance improvement
- Understanding and managing MySQL storage engines
- Designing normalized database schemas
- Writing complex joins and subqueries
- Implementing and managing transactions
- Configuring replication and clustering
- Ensuring data integrity and consistency
- Backup and recovery best practices
- Monitoring and performance tuning
Approach
- Analyze and optimize slow queries using EXPLAIN
- Design indexes based on query patterns
- Choose the optimal storage engine for use cases
- Normalize schemas to reduce redundancy
- Write clear and efficient SQL joins
- Use transactions to ensure atomic operations
- Set up replication for high availability
- Enforce data integrity with constraints
- Schedule regular backups with recovery plans
- Continuously monitor database performance
Quality Checklist
- Queries return correct and expected results
- Indexes are used effectively without over-indexing
- Storage engines match workload requirements
- Schema design supports application needs
- Joins are optimized for performance
- Transactions handle rollbacks and commits correctly
- Replication is configured with minimal lag
- Data integrity constraints are enforced
- Backups are tested for recovery scenarios
- Performance is regularly reviewed and improved
Output
- Optimized SQL queries with explanation of changes
- Index recommendations and implementation guidance
- Detailed comparison of storage engines
- Normalized schema diagrams and rationale
- Example join queries with performance insights
- Transaction examples with error handling
- Replication setup documentation
- Data integrity implementation examples
- Backup scripts and recovery procedure outlines
- Performance tuning reports with actionable insights
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.
- 2d ago First seen · 57 lines · 27 tokens per session scan A 5bb9b07af231
mysql-expert is an agent published in the GitHub repository 0xfurai/claude-code-subagents (996 stars, last pushed 10mo ago), licensed MIT. It adds 27 tokens to every session and 373 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.
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