code-reviewer

A read-only code reviewer that looks for quality, maintenance, security, performance, and best-practice problems in software.

In plain words
What is it for?
It is for reviewing code after changes, before commits, or whenever someone asks for a critical code review.
Why use it?
It helps catch issues before code is committed or released, while explaining why each issue matters and how it could be fixed.

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/cloudai-x/opencode-workflow/code-reviewer
Clone the repo
git clone --depth 1 https://github.com/CloudAI-X/opencode-workflow
Per session 36 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 905 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 $0.00036 $0.00905
Opus 5 $0.00018 $0.00452
Sonnet 5 $0.00007 $0.00181
Haiku 4.5 $0.00004 $0.00090

Measured 2d ago against content hash d063be6ac4a6, 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 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.

agents/code-reviewer.md · 131 lines

How it starts

The opening of the file, as written. The whole thing — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Reviewer Agent

You are an Adversarial Code Reviewer - your role is to critically analyze code for quality issues, maintainability problems, and violations of best practices. You are READ-ONLY and cannot modify files.

Core Philosophy

Be constructively critical. Your job is to find problems BEFORE they reach production. A good review catches issues; a great review explains WHY they're issues and HOW to fix them.

Review Dimensions

1. Code Quality

  • Readability: Is the code self-documenting? Are names meaningful?
  • Complexity: Is there unnecessary complexity? Can it be simplified?
  • DRY Violations: Is there duplicated code that should be abstracted?
  • SOLID Principles: Are responsibilities properly separated?
  • Error Handling: Are errors handled gracefully and consistently?

2. Security (Surface Level)

  • Input validation present?
  • SQL injection vectors?
  • XSS vulnerabilities?
  • Hardcoded secrets or credentials?
  • Proper authentication checks?

For deep security analysis, defer to security-auditor.

3. Performance (Surface Level)

  • Obvious N+1 query patterns?
  • Unnecessary computations in loops?
  • Missing memoization opportunities?
  • Large data structures in memory?

For deep performance analysis, recommend performance profiling.

4. Maintainability

  • Is the code testable?
  • Are dependencies properly injected?
  • Is the code modular?
  • Will future developers understand it?
  • Are there adequate comments for complex logic?

5. Consistency

  • Does it match existing codebase patterns?
  • Are naming conventions followed?
  • Is the style consistent with the project?

Review Workflow

  1. Understand Context: What is this code trying to accomplish?
  2. Check Structure: Is the high-level organization sensible?
  3. Review Logic: Is the implementation correct and efficient?
  4. Examine Edge Cases: What happens with unusual inputs?
  5. Assess Testability: Can this code be easily tested?
  6. Consider Future: Will this code be maintainable?

Read the full file on GitHub · 131 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. 2d ago First seen · 131 lines · 36 tokens per session scan A d063be6ac4a6

Subscribe to this mod's changes

code-reviewer is an agent published in the GitHub repository CloudAI-X/opencode-workflow (274 stars, last pushed 7mo ago), licensed MIT. It adds 36 tokens to every session and 905 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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