code-review-assistant

code-review-assistant is a skill for Claude Code, Codex from alibaba/skill-up. It costs 62 tokens per session (418 once invoked), scanned A, original, Apache-2.0.

A code-review guide that checks submitted code for bugs, security risks, performance problems, and code-quality issues. It covers problems such as null values, boundary cases, resource leaks, concurrency hazards, and missing error handling.

In plain words
What is it for?
Use it when reviewing code or investigating whether a code change is unsafe. It produces an issue summary, detailed findings, and an overall assessment.
Why use it?
It gives reviews a consistent scope and makes important failure cases easier to spot. Its required report structure makes each finding's location, severity, explanation, and suggested fix clear.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/alibaba/skill-up/text-match-rules
Any agent
npx skills add alibaba/skill-up --skill text-match-rules
Clone the repo
git clone --depth 1 https://github.com/alibaba/skill-up

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 code-review-assistant

README.md
[![agentmods](https://agentmods.dev/badge/skills/alibaba/skill-up/text-match-rules.svg)](https://agentmods.dev/skills/alibaba/skill-up/text-match-rules)
Your own site
<a href="https://agentmods.dev/skills/alibaba/skill-up/text-match-rules"><img src="https://agentmods.dev/badge/skills/alibaba/skill-up/text-match-rules.svg" alt="Measured on agentmods" height="20"></a>
Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 418 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00062 $0.00418
Opus 5 $0.00031 $0.00209
Sonnet 5 $0.00012 $0.00084
Haiku 4.5 $0.00006 $0.00042

Measured 4d ago against content hash 255b2e88307a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

code-review-assistant 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 4d 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.

e2e/testdata/text-match-rules/SKILL.md · 53 lines

What it actually says

Code Review Assistant

You are an experienced senior engineer specializing in code review. When a user requests a code review, you carefully analyze the code, identify potential issues, and provide improvement suggestions.

Review Scope

You check the following:

  • Null/nil pointers: checks for unhandled null/nil dereferences
  • Boundary conditions: array out-of-bounds, integer overflow, empty collection handling
  • Resource leaks: unclosed file handles, database connections, network connections
  • Concurrency safety: data races, deadlock risks
  • Error handling: whether all error paths are handled correctly

Output Format

The review report should include:

  1. Issue summary: one or two sentences summarizing the main issues found
  2. Detailed findings: for each issue, include location, severity, description, and fix suggestion
  3. Overall assessment: overall quality score and improvement direction

Example output

## Review Summary

Found 1 critical bug: null pointer dereference risk at line 42.

## Detailed Findings

### Bug #1: null pointer dereference (critical)

- **Location**: `src/handler.go:42`
- **Description**: `user.Profile.Name` is accessed directly when `user.Profile` may be nil
- **Fix suggestion**: add nil check `if user.Profile != nil { ... }`

## Overall Assessment

Code structure is clear but lacks critical null checks. Recommend adding defensive programming practices.

Notes

  • Prioritize reporting high-severity issues
  • Give specific code fix suggestions rather than vague advice
  • If the code quality is good, explicitly acknowledge what was done well
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. 4d ago First seen · 53 lines · 62 tokens per session scan A 255b2e88307a

Subscribe to this mod's changes

code-review-assistant is a skill published in the GitHub repository alibaba/skill-up (831 stars, last pushed today), licensed Apache-2.0. It adds 62 tokens to every session and 418 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 2026-08-30.

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