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mysql-explain

mysql-explain is a skill for Claude Code, Codex from fisker086/AIOps. It costs 0 tokens per session (382 once invoked), scanned A, original, Apache-2.0.

A tool that examines how MySQL, a relational database, plans to run a SQL query. It reports index use, rows examined, access methods, estimated costs, and other execution details.

In plain words
What is it for?
Use it to review query plans, check index usage, inspect partitioning, and investigate slow MySQL queries.
Why use it?
It helps explain why a query is slow before changing the query or its indexes. It can inspect the plan or, with analysis enabled, measure actual execution time.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 22repo 4mo ago A scan 0 tokens original Apache-2.0

Good fit Use it to review query plans, check index usage, inspect partitioning, and investigate slow MySQL queries.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/fisker086/aiops/mysql_explain
View source ↗ fisker086/AIOps
Install

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.

Any agent
npx skills add fisker086/AIOps --skill mysql_explain
Clone the repo
git clone --depth 1 https://github.com/fisker086/AIOps

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for mysql-explain

README.md
[![agentmods](https://agentmods.dev/badge/skills/fisker086/aiops/mysql_explain/github.svg)](https://agentmods.dev/skills/fisker086/aiops/mysql_explain)
Your own site
<a href="https://agentmods.dev/skills/fisker086/aiops/mysql_explain"><img src="https://agentmods.dev/badge/skills/fisker086/aiops/mysql_explain/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.

agentmods 80×15 button for mysql-explain

Your own site · 80×15
<a href="https://agentmods.dev/skills/fisker086/aiops/mysql_explain"><img src="https://agentmods.dev/badge/skills/fisker086/aiops/mysql_explain.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 382 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00382
Opus 5.5 $0.00000 $0.00153
Sonnet 5.5 $0.00000 $0.00076
Haiku 4.5 $0.00000 $0.00038

Measured 2mo ago against content hash cd148ccaf3ba, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mysql-explain 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.

skills/mysql_explain/SKILL.md · 37 lines

What it actually says

MySQL Explain Skill

Provides MySQL query execution plan analysis:

  • EXPLAIN: Show query execution plan
  • EXPLAIN ANALYZE: Show actual execution time and costs (MySQL 8.0+)
  • EXPLAIN FORMAT: Output in JSON, TREE, or traditional format
  • EXPLAIN PARTITIONS: Show partition information

Shows:

  • Access type (ALL, index, range, ref, eq_ref, const, etc.)
  • Key used and possible keys
  • Rows examined
  • Extra info (using filesort, using index, etc.)

Use builtin_mysql_explain tool with fields:

  • dsn: MySQL DSN (e.g., user:pass@tcp(host:3306)/dbname)
  • query: SQL query to explain
  • type: Explain type (classic, analyze, format, partitions)
  • format: Output format for FORMAT type (json, tree, traditional)
  • timeout: Query timeout in seconds (default: 30)
  • show_execution_time: Show actual execution time (true/1 or false)

Example:

dsn: "root:password@tcp(localhost:3306)/mydb"
query: "SELECT * FROM users WHERE email = '[email protected]'"
type: "analyze"

Note: This tool executes EXPLAIN on the query, not the query itself. Use show_execution_time to also run and time the actual query.

Changes

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.

  1. 2mo ago First seen · 37 lines · 0 tokens per session scan A cd148ccaf3ba

Subscribe to this mod's changes

mysql-explain is a skill published in the GitHub repository fisker086/AIOps (22 stars, last pushed 4mo ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 382 tokens. 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 2026-08-30.

Databases
Related

mysql-explain compared with skills from other repositories

mysql-explain next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
mysql-explainfisker086/AIOpsSkill224mo agoApache-2.0A0Claude Code, Codex
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atlas-mssqlariga/atlasSkill8.8kyesterdayApache-2.0A163Claude Code
ha-data-storesshiwenwen/hope-agentSkill1.9kyesterdayMITA115Claude Code, Codex
nornicdb-cypher-queriesorneryd/NornicDBSkill923yesterdayMITA79Claude Code, Codex
volcengine-rds-postgresqlbytedance/agentkit-samplesSkill484todayApache-2.0A63Claude Code, Codex