sql-pro

sql-pro is an agent for Claude Code from JosephHampton/awesome-gemini-cli-subagents. It costs 27 tokens per session (331 once invoked), scanned A, original, CC0-1.0.

A tool for writing and improving SQL, the language used to read and change data in relational databases. It examines database query plans to find why a query is slow or returns incorrect results.

In plain words
What is it for?
Use it to write complex queries, tune performance, choose indexes, read execution plans, and verify that an optimization still returns the right data.
Why use it?
It reduces slow queries and avoids fixes based on guesswork. It also helps prevent errors involving missing values, duplicate rows, and incorrect table joins.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Use it to write complex queries, tune performance, choose indexes, read execution plans, and verify that an optimization still returns the right data.

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Install with agentmods
npx agentmods add agents/josephhampton/awesome-gemini-cli-subagents/sql-pro
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.

Clone the repo
git clone --depth 1 https://github.com/JosephHampton/awesome-gemini-cli-subagents

Made for: Claude Code.

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-pro

README.md
[![agentmods](https://agentmods.dev/badge/agents/josephhampton/awesome-gemini-cli-subagents/sql-pro/github.svg)](https://agentmods.dev/agents/josephhampton/awesome-gemini-cli-subagents/sql-pro)
Your own site
<a href="https://agentmods.dev/agents/josephhampton/awesome-gemini-cli-subagents/sql-pro"><img src="https://agentmods.dev/badge/agents/josephhampton/awesome-gemini-cli-subagents/sql-pro/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-pro

Your own site · 80×15
<a href="https://agentmods.dev/agents/josephhampton/awesome-gemini-cli-subagents/sql-pro"><img src="https://agentmods.dev/badge/agents/josephhampton/awesome-gemini-cli-subagents/sql-pro.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 27 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 331 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 $0.00027 $0.00331
Opus 5.5 $0.00011 $0.00132
Sonnet 5.5 $0.00005 $0.00066
Haiku 4.5 $0.00003 $0.00033

Measured today against content hash 63100c520782, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sql-pro 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 today.

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.

antigravity/awesome-subagents/agents/sql-pro.md · 37 lines

What it actually says

You are a SQL expert who writes correct, readable queries and makes slow ones fast with evidence.

When invoked:

  1. Understand the schema, the indexes, and the data distribution before writing or tuning a query.
  2. For performance work, read the actual execution plan; never guess at what is slow.

Focus areas:

  • Correct, readable queries with clear joins and CTEs where they aid understanding.
  • Query performance: reading the plan, spotting full scans and bad join orders, and fixing them.
  • Indexing: the right index for the access pattern, and knowing when an index will not help.
  • Set-based thinking over row-by-row logic.
  • Avoiding subtle bugs: null handling, join fan-out, and duplicate rows from careless joins.

Method:

  • Read the execution plan to find the real bottleneck before changing anything.
  • Prefer an index or a query rewrite over brute force.
  • Verify the result is still correct after optimizing; a fast wrong query is useless.

Output:

  • The query, an explanation of the approach, and for tuning work the plan before and after with the improvement.

Never propose an index without explaining the access pattern it serves, and never optimize a query without checking the result is unchanged.

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. today First seen · 37 lines · 27 tokens per session scan A 63100c520782

Subscribe to this mod's changes

sql-pro is an agent published in the GitHub repository JosephHampton/awesome-gemini-cli-subagents (59 stars, last pushed yesterday), licensed CC0-1.0. It adds 27 tokens to every session and 331 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-10-23.

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