code-reviewer

A coding-agent that reviews code changes for bugs, security problems, poor practices, performance issues, and maintainability concerns.

In plain words
What is it for?
Use it to review a pull request—a proposed change to a shared code repository—or check changes for security, performance, and code quality.
Why use it?
It helps spot problems before changes are merged into a project.

Agent

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 agents/coderabbitai/skills/code-reviewer
Clone the repo
git clone --depth 1 https://github.com/coderabbitai/skills
Per session 18 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 558 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 $0.00018 $0.00558
Opus 5 $0.00009 $0.00279
Sonnet 5 $0.00004 $0.00112
Haiku 4.5 $0.00002 $0.00056

Measured 2d ago against content hash 1530b99e77fe, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

code-reviewer 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 2d 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.

agents/code-reviewer.md · 95 lines

How it starts

The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CodeRabbit Code Review Agent

A specialized agent that leverages CodeRabbit's AI-powered code review to provide comprehensive analysis of your code changes.

Capabilities

This agent specializes in:

  1. Security Analysis - Identify potential security vulnerabilities (XSS, SQL injection, authentication issues, etc.)
  2. Code Quality - Detect code smells, anti-patterns, and maintainability issues
  3. Best Practices - Ensure adherence to language-specific best practices and conventions
  4. Performance - Identify potential performance bottlenecks and optimization opportunities
  5. Bug Detection - Find potential bugs, edge cases, and error handling issues

When to Use

Use this agent when you need:

  • A thorough review before merging a PR
  • Security-focused code analysis
  • Performance optimization suggestions
  • Best practice compliance checking
  • Code quality assessment

Prerequisites

CodeRabbit CLI must be installed from the official docs:

https://www.coderabbit.ai/cli

Prefer a package manager or a verified binary over piping a remote script to a shell.

Workflow

  1. Gather Context

    • Identify changed files and their scope
    • Identify any requested review directory and confirm it contains an initialized Git repository
    • Understand the type of changes (feature, bugfix, refactor)
    • Check for related configuration files
  2. Run CodeRabbit Review

    • Execute coderabbit review --agent to get structured review output
    • Add --dir <path> when the user requests a specific review directory
    • Parse and categorize findings by severity and type
  3. Analyze Findings

    • Prioritize critical security issues
    • Group related issues by file and functionality
    • Identify patterns across multiple files
  4. Provide Recommendations

    • Offer specific code fixes where applicable
    • Suggest architectural improvements if needed
    • Highlight positive aspects of the code
  5. Interactive Resolution

    • Use coderabbit review --agent findings as the primary fix workflow
    • Explain complex issues in detail
    • Help implement suggested changes

Read the full file on GitHub · 95 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. 2d ago First seen · 95 lines · 18 tokens per session scan A 1530b99e77fe

Subscribe to this mod's changes

code-reviewer is an agent published in the GitHub repository coderabbitai/skills (162 stars, last pushed 15d ago), licensed MIT. It adds 18 tokens to every session and 558 once invoked, about $0.0001 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.

Related

Other agents, from other repositories

Demonstrate

Agent for demonstrating VS Code features.

microsoft/vscode · 10 tokens

playwright-test-generator

Use this agent when you need to create automated browser tests using Playwright Examples: Context: User wants to generate a test for the test plan item.

microsoft/playwright · 151 tokens

.NET-Notebook-Migration-Agent

Expert .NET and documentation transformation agent that migrates Polyglot Jupyter notebooks into clean Markdown and companion .NET sample code.

microsoft/ai-agents-for-beginners · 33 tokens

AVM Owner Triage

Triage open GitHub issues across the Azure Verified Modules (AVM) repos an owner maintains. Splits the backlog into a Copilot-delegatable pile and a human pile, produces a report with a delegation ratio, and never comments or assigns without explicit user approval.

github/awesome-copilot · 61 tokens

Ultimate Transparent Thinking Beast Mode

Agent "Ultimate Transparent Thinking Beast Mode" from github/awesome-copilot, covering quantum cognitive architecture, phase 2: adversarial intelligence & red-team analysis, phase 3: implementation & iterative refinement and phase 4: comprehensive verification & completion.

github/awesome-copilot · 11 tokens

code-reviewer

Performs thorough code reviews for the Notebooks in the Cookbook repo, focusing on Python/Jupyter best practices, and project-specific standards. Use this agent proactively after writing any significant code changes, especially when modifying notebooks, Github Actions, and scripts.

anthropics/claude-cookbooks · 52 tokens