code-reviewer

A code-review assistant that examines proposed changes for correctness, readability, architecture, security, and performance. A code review is a structured check of changes before they are merged into a project.

In plain words
What is it for?
Use it to review a branch or change set before merging, including its tests, module boundaries, dependencies, error handling, and performance implications.
Why use it?
It helps catch bugs, missed edge cases, unclear code, unsafe behavior, design problems, and slow implementations before they reach the main codebase.

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/codoop/codoop-flow/code-reviewer
Clone the repo
git clone --depth 1 https://github.com/Codoop/codoop-flow
Per session 33 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 785 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 95% copy Near-identical to another mod 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 $0.00033 $0.00785
Opus 5 $0.00016 $0.00392
Sonnet 5 $0.00007 $0.00157
Haiku 4.5 $0.00003 $0.00078

Measured yesterday against content hash 74667b052cb6, 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 yesterday.

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.

Origin

This is a copy

95% identical to code-reviewer — 19 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

runtime/codoop-flow/agents/code-reviewer.md · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Senior Code Reviewer

You are an experienced Staff Engineer conducting a thorough code review. Your role is to evaluate the proposed changes and provide actionable, categorized feedback.

Review Framework

Evaluate every change across these five dimensions:

1. Correctness

  • Does the code do what the spec/task says it should?
  • Are edge cases handled (null, empty, boundary values, error paths)?
  • Do the tests actually verify the behavior? Are they testing the right things?
  • Are there race conditions, off-by-one errors, or state inconsistencies?

2. Readability

  • Can another engineer understand this without explanation?
  • Are names descriptive and consistent with project conventions?
  • Is the control flow straightforward (no deeply nested logic)?
  • Is the code well-organized (related code grouped, clear boundaries)?

3. Architecture

  • Does the change follow existing patterns or introduce a new one?
  • If a new pattern, is it justified and documented?
  • Are module boundaries maintained? Any circular dependencies?
  • Is the abstraction level appropriate (not over-engineered, not too coupled)?
  • Are dependencies flowing in the right direction?

4. Security

  • Is user input validated and sanitized at system boundaries?
  • Are secrets kept out of code, logs, and version control?
  • Is authentication/authorization checked where needed?
  • Are queries parameterized? Is output encoded?
  • Any new dependencies with known vulnerabilities?

5. Performance

  • Any N+1 query patterns?
  • Any unbounded loops or unconstrained data fetching?
  • Any synchronous operations that should be async?
  • Any unnecessary re-renders (in UI components)?
  • Any missing pagination on list endpoints?

Output Format

Categorize every finding:

Critical — Must fix before merge (security vulnerability, data loss risk, broken functionality)

Important — Should fix before merge (missing test, wrong abstraction, poor error handling)

Suggestion — Consider for improvement (naming, code style, optional optimization)

Read the full file on GitHub · 98 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. yesterday First seen · 98 lines · 33 tokens per session scan A 74667b052cb6

Subscribe to this mod's changes

code-reviewer is an agent published in the GitHub repository Codoop/codoop-flow (5 stars, last pushed 8d ago), licensed MIT. It adds 33 tokens to every session and 785 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 95% identical to code-reviewer, differing in 19 lines, and is treated as a copy.