sqlx-code-review

sqlx-code-review is a skill for Claude Code from existential-birds/beagle. It costs 59 tokens per session (1,836 once invoked), scanned A, original, Apache-2.0.

A review guide for Rust database code that uses sqlx, a Rust library for working with SQL databases. It checks SQL queries, connection pools, migrations, type conversions, and transactions, with specific attention to PostgreSQL.

In plain words
What is it for?
Use it when reviewing Rust code that reads or writes a database with sqlx, especially PostgreSQL applications and their schema migrations.
Why use it?
It helps catch queries that are not checked as expected, unsafe migration changes, mismatched data types, and poorly configured database connections.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: positional $N argument.

Part of the beagle-rust plugin — 11 skills shipped together

Good fit Use it when reviewing Rust code that reads or writes a database with sqlx, especially PostgreSQL applications and their schema migrations.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/existential-birds/beagle/sqlx-code-review
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 existential-birds/beagle --skill sqlx-code-review
Clone the repo
git clone --depth 1 https://github.com/existential-birds/beagle

Made for: Claude Code.

Or install beagle-rust, the plugin that ships this one along with the rest of its 11 skills.

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 sqlx-code-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/existential-birds/beagle/sqlx-code-review/github.svg)](https://agentmods.dev/skills/existential-birds/beagle/sqlx-code-review)
Your own site
<a href="https://agentmods.dev/skills/existential-birds/beagle/sqlx-code-review"><img src="https://agentmods.dev/badge/skills/existential-birds/beagle/sqlx-code-review/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 sqlx-code-review

Your own site · 80×15
<a href="https://agentmods.dev/skills/existential-birds/beagle/sqlx-code-review"><img src="https://agentmods.dev/badge/skills/existential-birds/beagle/sqlx-code-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,836 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 $0.00059 $0.01836
Opus 5.5 $0.00024 $0.00734
Sonnet 5.5 $0.00012 $0.00367
Haiku 4.5 $0.00006 $0.00184

Measured 1mo ago against content hash 9df2f387dbe3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sqlx-code-review 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 1mo 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.

plugins/beagle-rust/skills/sqlx-code-review/SKILL.md · 128 lines

How it starts

The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.

sqlx Code Review

Review Workflow

  1. Check Cargo.toml — Note sqlx features (runtime-tokio, tls-rustls/tls-native-tls, postgres/mysql/sqlite, uuid, chrono, json, migrate) and Rust edition (2024 changes RPIT lifetime capture and removes need for async-trait)
  2. Check query patterns — Compile-time checked (query!, query_as!) vs runtime (query, query_as)
  3. Check pool configuration — Connection limits, timeouts, idle settings
  4. Check migrations — File naming, reversibility, data migration safety
  5. Check type mappings — Rust types align with SQL column types

Gates (evidence before severity)

Complete in order; do not assign Critical / Major until the gate for that claim is passed.

  1. Scope — Identify the crate under review (Cargo.toml path) and the .rs files (or directory) you opened. Pass: At least one concrete path you inspected is named.
  2. sqlx / compile claims — Before asserting issues about query! / query_as!, offline mode, sqlx.toml, DATABASE_URL, or Cargo features: open the relevant Cargo.toml and, if applicable, sqlx.toml or documented env. Pass: The finding cites a line or you state that those files were absent / out of scope.
  3. Finding anchors — Each reported issue includes [FILE:LINE] per Output Format. Pass: No Critical or Major without a line reference.
  4. Protocol — Load and complete the review-verification-protocol skill after gates 1–3 and before final severity labels. Pass: Protocol steps satisfied for each retained finding.

Output Format

Report findings as:

[FILE:LINE] ISSUE_TITLE
Severity: Critical | Major | Minor | Informational
Description of the issue and why it matters.

Quick Reference

Issue Type Reference
Query macros, bind parameters, result mapping references/queries.md
Migrations, pool config, transaction patterns references/migrations.md

Read the full file on GitHub · 128 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 1mo ago First seen · 128 lines · 59 tokens per session scan A 9df2f387dbe3

Subscribe to this mod's changes

sqlx-code-review is a skill published in the GitHub repository existential-birds/beagle (82 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 59 tokens to every session and 1,836 once invoked, about $0.0002 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 2026-09-16.

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