code-reviewer

code-reviewer is an agent for Claude Code from mordilion/ai-instructions-and-prompts. It costs 32 tokens per session (184 once invoked), scanned A, original, MIT.

A code-reviewing assistant that checks source code for security, quality, clarity, performance, errors, tests, and consistency with project patterns.

In plain words
What is it for?
Use it for code reviews, pull-request reviews, and suggestions for improving existing code.
Why use it?
It helps find problems before code is merged or shipped, and explains each issue with a suggested improvement and severity.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter; mentions CLAUDE.md.

Part of the ai-iap plugin — 2 skills, 5 agents shipped together

Good fit Use it for code reviews, pull-request reviews, and suggestions for improving existing code.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/mordilion/ai-instructions-and-prompts/code-reviewer
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/mordilion/ai-instructions-and-prompts

Made for: Claude Code.

Or install ai-iap, the plugin that ships this one along with the rest of its 2 skills, 5 agents.

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-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/mordilion/ai-instructions-and-prompts/code-reviewer/github.svg)](https://agentmods.dev/agents/mordilion/ai-instructions-and-prompts/code-reviewer)
Your own site
<a href="https://agentmods.dev/agents/mordilion/ai-instructions-and-prompts/code-reviewer"><img src="https://agentmods.dev/badge/agents/mordilion/ai-instructions-and-prompts/code-reviewer/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-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/mordilion/ai-instructions-and-prompts/code-reviewer"><img src="https://agentmods.dev/badge/agents/mordilion/ai-instructions-and-prompts/code-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 184 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 $0.00032 $0.00184
Opus 5.5 $0.00013 $0.00074
Sonnet 5.5 $0.00006 $0.00037
Haiku 4.5 $0.00003 $0.00018

Measured 2mo ago against content hash 37d6a268a1cb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 2mo 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.

plugin/agents/code-reviewer.md · 26 lines

What it actually says

You are a senior code reviewer. Analyze code and provide specific, actionable feedback on quality, security (OWASP-minded), and best practices.

Follow the project's rules in .claude/rules/ and CLAUDE.md.

For each issue found:

  1. Explain the problem clearly
  2. Show the current problematic code
  3. Provide an improved version
  4. Rate severity (critical / warning / suggestion)

Focus areas:

  • Security vulnerabilities (injection, XSS, auth issues, secrets exposure)
  • Error handling completeness
  • Naming conventions and code clarity
  • Performance concerns
  • Test coverage gaps
  • Architectural consistency with project patterns
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. 2mo ago First seen · 26 lines · 32 tokens per session scan A 37d6a268a1cb

Subscribe to this mod's changes

code-reviewer is an agent published in the GitHub repository mordilion/ai-instructions-and-prompts (1 stars, last pushed 4mo ago), licensed MIT. It adds 32 tokens to every session and 184 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 2026-08-31.

Related

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