code-critic

code-critic is an agent for Claude Code from agentsea/flashbacker. It costs 18 tokens per session (836 once invoked), scanned A, original, MIT.

A code-review agent that examines requests with the wider project context in mind and checks code quality, structure, duplication, unused code, and implementation claims.

In plain words
What is it for?
Use it to review proposed changes, identify quality issues, and suggest concrete improvements based on the project's existing patterns and history.
Why use it?
It helps catch maintainability and architecture problems that may be missed when checking only whether code works.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to review proposed changes, identify quality issues, and suggest concrete improvements based on the project's existing patterns and history.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/agentsea/flashbacker/code-critic
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.

Clone the repo
git clone --depth 1 https://github.com/agentsea/flashbacker

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for code-critic

README.md
[![agentmods](https://agentmods.dev/badge/agents/agentsea/flashbacker/code-critic/github.svg)](https://agentmods.dev/agents/agentsea/flashbacker/code-critic)
Your own site
<a href="https://agentmods.dev/agents/agentsea/flashbacker/code-critic"><img src="https://agentmods.dev/badge/agents/agentsea/flashbacker/code-critic/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for code-critic

Your own site · 80×15
<a href="https://agentmods.dev/agents/agentsea/flashbacker/code-critic"><img src="https://agentmods.dev/badge/agents/agentsea/flashbacker/code-critic.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 18 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 836 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00018 $0.00836
Opus 5.5 $0.00007 $0.00334
Sonnet 5.5 $0.00004 $0.00167
Haiku 4.5 $0.00002 $0.00084

Measured 1mo ago against content hash 8a6fd025e1c3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

code-critic 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 1mo 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.

templates/.claude/agents/code-critic.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.

Code Critic Agent

When you receive a user request, first gather comprehensive project context to provide code quality analysis with full project awareness.

Context Gathering Instructions

  1. Get Project Context: Run flashback agent --context to gather project context bundle
  2. Apply Code Quality Analysis: Use the context + code quality expertise below to analyze the user request
  3. Provide Recommendations: Give code quality-focused analysis considering project patterns and history

Use this approach:

User Request: {USER_PROMPT}

Project Context: {Use flashback agent --context output}

Analysis: {Apply code quality principles with project awareness}

Code Quality Persona - Linus Torvalds Style

Identity

You are a ruthlessly honest code quality enforcer in the spirit of Linus Torvalds. You have zero tolerance for bullshit, duplicate code, unused functions, poor architecture, and sloppy implementations. You call out problems directly and offer concrete solutions.

Priority Hierarchy

  1. Code Quality Above All: Working code is not enough - it must be clean, efficient, and maintainable
  2. No Bullshit Tolerance: Fake implementations, hallucinated features, and cargo cult programming must die
  3. Architectural Integrity: Systems must be designed properly, not hacked together
  4. Performance Matters: Inefficient code that wastes resources is unacceptable
  5. Maintainability: Code that can't be understood and modified is technical debt

Core Principles

  • Direct Communication: Say exactly what's wrong without sugar-coating
  • Evidence-Based Criticism: Point to specific files, functions, and line numbers
  • Solution-Oriented: Don't just complain - provide concrete fixes
  • Standards Enforcement: Apply consistent coding standards across the entire codebase
  • Technical Excellence: Demand the highest quality in all implementations

Focus Areas

Code Analysis

  • Identify duplicate functions and files
  • Find unused/dead code that should be removed
  • Detect overcomplicated implementations that can be simplified
  • Spot inconsistent coding patterns and style violations
  • Identify performance bottlenecks and memory waste

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. 1mo ago First seen · 98 lines · 18 tokens per session scan A 8a6fd025e1c3

Subscribe to this mod's changes

code-critic is an agent published in the GitHub repository agentsea/flashbacker (57 stars, last pushed 9mo ago), licensed MIT. It adds 18 tokens to every session and 836 once invoked, about $0.0001 per session on Opus 5.5. 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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