llms: Skill for Claude Code

.claude/skills/code-review/SKILL.md

code-review is a skill for Claude Code from matteocervelli/llms. It costs 72 tokens per session (909 once invoked), scanned A, original, MIT.

A code review checklist focused on code quality, organization, naming, error handling, complexity, testing readiness, and style.

In plain words
What is it for?
Use it to review a file or code change for structure, readable names, clear errors, manageable complexity, and testable design.
Why use it?
It helps find maintainability problems before code is committed and separates general quality review from security review.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

This is matteocervelli/llms's own configuration. It tells Claude Code how to work on llms itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything llms configures →

Reuse

Borrowing it

Nothing to install: this file belongs to matteocervelli/llms. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/matteocervelli/llms/main/.claude/skills/code-review/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/matteocervelli/llms

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 code-review

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/matteocervelli/llms/code-review"><img src="https://agentmods.dev/badge/skills/matteocervelli/llms/code-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 72 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 909 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 $0.00072 $0.00909
Opus 5.5 $0.00029 $0.00364
Sonnet 5.5 $0.00014 $0.00182
Haiku 4.5 $0.00007 $0.00091

Measured 1mo ago against content hash e6d92c66c7fe, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

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.

.claude/skills/code-review/SKILL.md · 154 lines

How it starts

The opening of the file, as written. The whole thing — 154 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Review Skill

Purpose

Code review focused on quality, structure, naming, and maintainability. For security reviews, use /security-verify scan.

Quick Start

/code-review <file-path>

Review Categories

1. Code Quality (Critical)

File Organization

  • File size <= 500 lines
  • Single responsibility
  • Clear module structure

Naming

  • Self-documenting names
  • Verbs for functions, nouns for data
  • Consistent naming style (snake_case/camelCase)
  • No abbreviations

Type Hints (Python) / Types (TS)

  • All function parameters typed
  • Return types specified
  • No implicit Any

Docstrings/Comments

  • Google-style docstrings on public API
  • Comments explain WHY, not WHAT
  • No commented-out code

2. Error Handling

  • Specific exception types
  • No bare except:
  • Clear error messages
  • Cleanup in finally/with blocks

3. Complexity

  • Functions < 50 lines
  • Cyclomatic complexity < 10
  • Nesting depth < 4 levels
  • No deep callback chains

4. Testing Readiness

  • Dependencies injectable
  • Side effects isolated
  • Pure functions where possible

5. Style

  • Consistent formatting
  • Imports organized
  • No unused imports/variables

Review Output

# Code Review: src/module.py

## Quality Score: 8/10

## Critical Issues (Must Fix)

- Line 45: Function `process_data` is 78 lines. Split into smaller functions.

## Important Issues (Should Fix)

- Line 23: Missing type hint on return value
- Line 67: Bare `except:` - specify exception type

## Suggestions

- Line 12: Consider extracting magic number 86400 to constant

## Strengths

- Clear function naming
- Good separation of concerns

Common Issues Checklist

Python

  • No mutable default arguments
  • Using context managers for resources
  • No string concatenation in loops
  • Using generators for large datasets

TypeScript

  • Strict mode enabled
  • No any types
  • Proper null checks
  • No type assertions without reason

Read the full file on GitHub · 154 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 · 154 lines · 72 tokens per session scan A e6d92c66c7fe

Subscribe to this mod's changes

code-review is a skill published in the GitHub repository matteocervelli/llms (25 stars, last pushed 5mo ago), licensed MIT. It adds 72 tokens to every session and 909 once invoked, about $0.0003 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 2026-09-03.

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