review

A command for reviewing code for bugs, design flaws, unused code, and maintainability problems.

In plain words
What is it for?
It is for finding logic errors, edge cases, coupling, dead code, inefficiencies, and documentation gaps.
Why use it?
It gives a consistent way to inspect a whole project, a file, or code against stated requirements.

Command

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 commands/stefan-jansen/claude-code-toolkit/review
Clone the repo
git clone --depth 1 https://github.com/stefan-jansen/claude-code-toolkit
Per session 15 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 460 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 $0.00015 $0.00460
Opus 5 $0.00008 $0.00230
Sonnet 5 $0.00003 $0.00092
Haiku 4.5 $0.00002 $0.00046

Measured yesterday against content hash 4afd7c39c906, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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 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.

plugins/development/commands/review.md · 74 lines

What it actually says

Code Review

Practical code review focused on bugs, design issues, and maintainability.

Input: $ARGUMENTS

Usage

/review                        # Review entire project
/review src/auth.py            # Review specific file
/review --spec design.md       # Validate against requirements
/review --systematic           # Structured reasoning for complex code
/review --semantic             # Use Serena (70-90% token reduction)

Focus Areas

  1. Bugs: Logic errors, edge cases, error handling, null checks
  2. Design: Organization, coupling, SOLID violations, patterns
  3. Dead Code: Unused functions, imports, variables, commented code
  4. Quality: Readability, complexity, naming, documentation gaps
  5. Performance: Obvious inefficiencies, N+1 queries, memory leaks

NOT Included (By Design)

  • Security scanning → use specialized tools
  • Infrastructure audits → use /audit

Output Format

# Code Review Results

## Summary
Brief overview of findings.

## Critical Issues (Fix Immediately)
- **Issue**: [description]
  - **Location**: file:line
  - **Impact**: [why it matters]
  - **Fix**: [specific steps]

## Important Issues (Fix Soon)
[same format]

## Minor Issues (Fix When Convenient)
[same format]

## Positive Observations
- Well-implemented patterns
- Good practices found

## Action Plan
1. Immediate: [critical fixes]
2. This Sprint: [important improvements]
3. Backlog: [minor cleanups]

## Estimated Effort
- Critical: X hours
- Important: Y hours
- Minor: Z hours

Integration

After review: /fix review to apply recommended fixes

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 · 74 lines · 15 tokens per session scan A 4afd7c39c906

Subscribe to this mod's changes

review is a command published in the GitHub repository stefan-jansen/claude-code-toolkit (85 stars, last pushed 1mo ago), licensed MIT. It adds 15 tokens to every session and 460 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.