sql-optimizer SKILL.md skillA
sql-optimizer from mathews-tom/armory is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add mathews-tom/armory/sql-optimizer@v1.1.1Pins v1.1.1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- mathews-tom/armory
- Path
skills/sql-optimizer/SKILL.md- Versions recorded
- 5
- Latest version
- v1.1.1, committed Apr 11, 2026
- First version recorded
- Mar 26, 2026
- Size
- 9,232 bytes
- Repository stars
- 339
- License
- MIT
Analyzes SQL queries for missing indexes, N+1 patterns, suboptimal joins, and full table scans. Interprets EXPLAIN, detects anti-patterns, rewrites queries. Triggers on: "optimize this query", "slow query", "add indexes", "explain plan", "N+1 query", "why is this query slow".
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# SQL Optimizer Systematic SQL performance analysis: parse query structure, interpret EXPLAIN plans, detect anti-patterns (N+1, full scans, cartesian joins), recommend indexes, and rewrite queries — with explanations of WHY each change improves performance, not just WHAT changed. ## Reference Files | File | Contents | Load When | | --------------------------------- | ------------------------------------------------------------------------- | ---------------------------------- | | `references/anti-patterns.md` | Common SQL anti-patterns with detection rules and fixes | Always | | `references/index-strategies.md` | Index type selection, composite index ordering, covering indexes | Index recommendations needed | | `references/explain-guide.md` | Reading EXPLAIN output for PostgreSQL, MySQL, SQLite | EXPLAIN plan provided | …
Read the whole file at its exact version.
How to install
mdr add mathews-tom/armory/sql-optimizer@sha256:77338978d5c6f02fThe line at the top of this page pins the label v1.1.1, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_n2l3yzczgeuzfw4q)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Mar 26, 2026 and Apr 11, 2026, about one every 4 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.1.1 latest | 2026-04-11 | 0aa221a | 9,232 B | A | view · diff |
| v1.1.1 | 2026-04-09 | 1cc63e5 | 9,560 B | B | view · diff |
| v1.1.1 | 2026-04-07 | b03849d | 9,545 B | B | view · diff |
| v1.1.0 | 2026-03-27 | d46cf2e | 9,545 B | B | view · diff |
| v1.1.0 | 2026-03-26 | 6fe71e6 | 8,816 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (9232 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
mathews-tom/armory · 339 stars · license MIT · pushed 2026-10-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_n2l3yzczgeuzfw4q GET https://markdownregistry.com/api/v1/resolve?ref=mathews-tom/armory/sql-optimizer GET https://markdownregistry.com/api/v1/blob/77338978d5c6f02f56e807f2b9e4c563dcd57934fa32eec557169c8b18973708
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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