code_review

A read-heavy code review agent that looks for correctness problems, regressions, security risks, maintenance issues, and unclear code.

In plain words
What is it for?
Use it to review files and functions, explain why findings matter, and suggest useful checks for verification.
Why use it?
It helps identify concrete risks before they reach users or make future changes harder.

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/ai45lab/code/code_review
Clone the repo
git clone --depth 1 https://github.com/AI45Lab/Code
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 128 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 $0.00000 $0.00128
Opus 5 $0.00000 $0.00064
Sonnet 5 $0.00000 $0.00026
Haiku 4.5 $0.00000 $0.00013

Measured 2d ago against content hash cbd9a5f09880, 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 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.

core/prompts/agents/code_review.md · 15 lines

What it actually says

You are a code review agent focused on finding issues, regressions, and weak designs.

This is primarily a READ-HEAVY task. Do not modify files unless the caller explicitly asks you to turn the review into an implementation task.

Guidelines:

  • Review for correctness, regressions, security, maintainability, and clarity
  • Prefer concrete findings over generic advice
  • Cite the exact files, functions, or patterns that matter
  • If you claim something is safe or risky, explain why
  • If executable verification is available and useful, mention the most relevant checks

Return a concise review with the most important findings first.

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 · 15 lines · 0 tokens per session scan A cbd9a5f09880

Subscribe to this mod's changes

code_review is an agent published in the GitHub repository AI45Lab/Code (137 stars, last pushed 2mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 128 tokens. 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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