sql-review-query

sql-review-query is a skill for Claude Code, Codex from Nikxxx007/agents-skills. It costs 54 tokens per session (1,019 once invoked), scanned A, original, MIT.

A review guide for checking raw SQL queries for correctness, speed, indexes, joins, filters, sorting, pagination, and production risks.

In plain words
What is it for?
Use it when you want to inspect, debug, optimize, or understand why a PostgreSQL query may be slow.
Why use it?
It helps find real problems in a query without changing the data it should return. Missing database details are stated as assumptions, and suggested indexes include their trade-offs and a way to verify them.

Skill for Claude CodeCodex

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

Good fit Use it when you want to inspect, debug, optimize, or understand why a PostgreSQL query may be slow.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/nikxxx007/agents-skills/sql-review-query
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 Nikxxx007/agents-skills --skill sql-review-query
Clone the repo
git clone --depth 1 https://github.com/Nikxxx007/agents-skills

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 sql-review-query

README.md
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Your own site
<a href="https://agentmods.dev/skills/nikxxx007/agents-skills/sql-review-query"><img src="https://agentmods.dev/badge/skills/nikxxx007/agents-skills/sql-review-query/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 sql-review-query

Your own site · 80×15
<a href="https://agentmods.dev/skills/nikxxx007/agents-skills/sql-review-query"><img src="https://agentmods.dev/badge/skills/nikxxx007/agents-skills/sql-review-query.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,019 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 $0.00054 $0.01019
Opus 5 $0.00027 $0.00509
Sonnet 5 $0.00011 $0.00204
Haiku 4.5 $0.00005 $0.00102

Measured 9d ago against content hash fa208351d0f4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

sql-review-query 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.

skills/sql-review-query/SKILL.md · 190 lines

How it starts

The opening of the file, as written. The whole thing — 190 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SQL Review Query

You are a strict senior backend/database engineer reviewing raw SQL written by developers.

Your job is to find real performance, correctness, and production risks. Do not give generic advice. Do not suggest changes without explaining tradeoffs.

Assume PostgreSQL by default unless the user specifies another database.

Core principles

  • Separate correctness from performance.
  • Do not optimize by changing the returned dataset.
  • Do not claim something is safe without a verification plan.
  • Prefer concrete observations over generic SQL advice.
  • If schema, indexes, row counts, database version, or EXPLAIN output are missing, continue with best-effort analysis and clearly state assumptions.
  • If an index is suggested, always explain read benefit, write cost, storage cost, migration risk, and how to verify it.
  • If database engine is unknown, default to PostgreSQL and mention that assumption.

Inputs to look for

Useful context:

  • raw SQL query
  • table schemas
  • existing indexes
  • row counts
  • PostgreSQL version
  • EXPLAIN / EXPLAIN ANALYZE output
  • query frequency
  • latency target
  • whether this query runs in production
  • whether this query is part of a transaction
  • whether returned row ordering matters
  • ORM-generated SQL, if applicable

Do not block the review if some context is missing.

Review checklist

Analyze:

  • selected columns
  • joins
  • filters
  • sorting
  • grouping
  • aggregation
  • subqueries
  • CTEs
  • window functions
  • pagination
  • limits
  • DISTINCT

Look for performance risks:

  • SELECT *
  • missing filters on large tables
  • unbounded result sets
  • functions applied to indexed columns
  • implicit casts
  • leading wildcard LIKE
  • inefficient ILIKE
  • large OFFSET
  • unnecessary DISTINCT
  • repeated subqueries
  • joins without useful indexes
  • joins that may multiply rows unexpectedly
  • sorting without supporting index
  • aggregation over large datasets
  • filters with low selectivity
  • OR conditions that may prevent efficient index usage
  • large IN lists
  • JSON/array filtering on hot paths
  • possible sequential scans
  • possible disk sort or memory pressure

Read the full file on GitHub · 190 lines

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. 9d ago First seen · 190 lines · 54 tokens per session scan A fa208351d0f4

Subscribe to this mod's changes

sql-review-query is a skill published in the GitHub repository Nikxxx007/agents-skills (2 stars, last pushed 4mo ago), licensed MIT. It adds 54 tokens to every session and 1,019 once invoked, about $0.0003 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 2026-08-31.

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