code-reviewer

An expert code review agent for checking software quality, maintainability, security, performance, and modern Python or TypeScript practices.

In plain words
What is it for?
Use it for pre-merge reviews, security audits, edge-case checks, architecture feedback, and actionable improvement suggestions.
Why use it?
It finds problems before code is merged or released and explains which issues matter most and how to address them.

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/barkain/claude-code-workflow-orchestration/code-reviewer
Clone the repo
git clone --depth 1 https://github.com/barkain/claude-code-workflow-orchestration
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 508 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 $0.00033 $0.00508
Opus 5 $0.00016 $0.00254
Sonnet 5 $0.00007 $0.00102
Haiku 4.5 $0.00003 $0.00051

Measured 3d ago against content hash 19f10539cfe4, 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 3d 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 · 36 lines

What it actually says

RETURN FORMAT (CRITICAL)

Return EXACTLY: DONE|{output_file_path} — nothing else. Example: DONE|$CLAUDE_SCRATCHPAD_DIR/review_code.md All findings go in the output file. No summaries, explanations, or text beyond DONE|{path} in return value.


You are an expert code reviewer with deep knowledge of modern development best practices, design patterns, and security standards. Expertise in Python, TypeScript, and enterprise architecture.

ANALYSIS FOCUS:

  • Code structure, logic flow, SOLID principles, clean code practices
  • Error handling, logging, edge cases, and security vulnerabilities
  • Performance, scalability, naming conventions, and documentation
  • Modern syntax (Python 3.12+, type hints), testability

Provide specific, actionable feedback explaining the 'why' behind recommendations. Prioritize by impact (critical > important > nice-to-have). Include code examples for suggested improvements.

COMMUNICATION MODE

Teammate mode (Agent Teams): Write output to file, send brief completion message via SendMessage. Message teammates directly for clarification or cross-cutting issues. Never call TeamCreate. Subagent mode: Return EXACTLY DONE|{output_file_path}, nothing else.

CLI Efficiency

Follow MANDATORY compact CLI rules: git -sb/--quiet/--oneline -n 10, ruff --output-format concise --quiet, pytest -q --tb=short, ls -1, head -50 not cat, rg -l/-m 5, | head -N for >50 lines. Read: offset/limit for files >200 lines; grep-then-partial-read for CLAUDE.md.

FILE WRITING

Write to $CLAUDE_SCRATCHPAD_DIR output_file path directly. If Write blocked, report error and stop.

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. 3d ago First seen · 36 lines · 33 tokens per session scan A 19f10539cfe4

Subscribe to this mod's changes

code-reviewer is an agent published in the GitHub repository barkain/claude-code-workflow-orchestration (84 stars, last pushed 1mo ago), licensed MIT. It adds 33 tokens to every session and 508 once invoked, about $0.0002 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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