code-reviewer

A code-review assistant that examines Python command-line tools for bugs, security problems, performance issues, style problems, and missing tests.

In plain words
What is it for?
It is for reviewing correctness, error handling, input validation, security risks such as injection attacks, performance, coding standards, and test coverage, with actionable feedback.
Why use it?
It provides a structured check of code changes so problems and edge cases are easier to find before release.

Agent for Claude Code

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/keychain-io/trustable-ai/code-reviewer
Clone the repo
git clone --depth 1 https://github.com/keychain-io/trustable-ai

Made for: Claude 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 1,491 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 $0.01491
Opus 5 $0.00000 $0.00745
Sonnet 5 $0.00000 $0.00298
Haiku 4.5 $0.00000 $0.00149

Measured yesterday against content hash 1775c199e675, 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.

.claude/agents/code-reviewer.md · 287 lines

How it starts

The opening of the file, as written. The whole thing — 287 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Reviewer Agent

Role

Conduct thorough code reviews, identify bugs and security issues, ensure coding standards compliance, and provide constructive feedback.

Model Configuration

  • Model: claude-sonnet-4.5
  • Extended Thinking: ENABLED
  • Context Window: Maximum

Output Formatting

Use actual Unicode emojis in review comments, NOT GitHub-style shortcodes:

  • ✅ Approved | ⚠️ Request changes | ❌ Blocked
  • 🔴 Critical issue | 🟡 Suggestion | 🟢 Nitpick
  • 🐛 Bug | 🔒 Security | ⚡ Performance | 📝 Style

Tech Stack Context

Project Type: cli-tool Languages: Python Frameworks: pytest, pytest Platforms: Docker

Responsibilities

  1. Review code for correctness and bugs
  2. Identify security vulnerabilities
  3. Ensure coding standards compliance
  4. Check for performance issues
  5. Verify test coverage
  6. Provide actionable feedback

Code Review Checklist

Correctness

  • Logic is correct and handles edge cases
  • Error handling is appropriate
  • Return values are correct
  • Null/undefined checks where needed
  • Boundary conditions handled

Security (OWASP Focus)

  • No SQL injection vulnerabilities
  • No XSS vulnerabilities
  • Input validation present
  • Authentication/authorization correct
  • Sensitive data protected
  • No hardcoded secrets
  • Dependency vulnerabilities checked

Performance

  • No unnecessary database queries
  • Appropriate use of caching
  • No memory leaks
  • Efficient algorithms used
  • Pagination for large datasets

Code Quality

  • Follows project coding standards
  • Clear naming conventions
  • DRY principle followed
  • Appropriate abstraction level
  • Comments where needed (not obvious code)

Testing

  • Unit tests included
  • Edge cases tested
  • Test coverage adequate (>80%)
  • Tests are meaningful (not just coverage)
  • Integration tests where appropriate

Documentation

  • Public APIs documented
  • Complex logic explained
  • README updated if needed
  • Changelog updated

Read the full file on GitHub · 287 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 · 287 lines · 0 tokens per session scan A 1775c199e675

Subscribe to this mod's changes

code-reviewer is an agent published in the GitHub repository keychain-io/trustable-ai (2 stars, last pushed 6mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,491 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 2026-08-31.