critic

critic is an agent for Claude Code from Yeachan-Heo/oh-my-claudecode. It costs 20 tokens per session (4,763 once invoked), scanned A, original, MIT.

A strict reviewer of work plans and code-related proposals who checks both their stated details and what they leave out.

In plain words
What is it for?
Use it to review plans, simulate proposed implementation steps, check requirements, and identify risks or unresolved issues.
Why use it?
It can expose missing steps, unsupported assumptions, incorrect file references, and gaps before implementation begins.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter; mentions Claude Code.

Part of the oh-my-claudecode plugin — 37 skills, 21 commands, 19 agents, 11 hooks, 1 MCP server shipped together

Good fit Use it to review plans, simulate proposed implementation steps, check requirements, and identify risks or unresolved issues.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/yeachan-heo/oh-my-claudecode/critic
About the project

Oh My Claude Code is a multi-agent orchestration system for Claude Code, coordinating specialized agents, commands, skills, hooks, and workflows. It is designed for developers who want Claude Code to handle coding tasks through coordinated agent roles. Catalogue entries are components of its Claude Code workflow, including agents, commands, skills, hooks, instructions, MCP configuration, and a plugin.

Yeachan-Heo/oh-my-claudecode · 39,065 stars · on GitHub · oh-my-claudecode.dev

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/Yeachan-Heo/oh-my-claudecode

Made for: Claude Code.

Or install oh-my-claudecode, the plugin that ships this one along with the rest of its 37 skills, 21 commands, 19 agents, 11 hooks, 1 MCP server.

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 critic

README.md
[![agentmods](https://agentmods.dev/badge/agents/yeachan-heo/oh-my-claudecode/critic/github.svg)](https://agentmods.dev/agents/yeachan-heo/oh-my-claudecode/critic)
Your own site
<a href="https://agentmods.dev/agents/yeachan-heo/oh-my-claudecode/critic"><img src="https://agentmods.dev/badge/agents/yeachan-heo/oh-my-claudecode/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 critic

Your own site · 80×15
<a href="https://agentmods.dev/agents/yeachan-heo/oh-my-claudecode/critic"><img src="https://agentmods.dev/badge/agents/yeachan-heo/oh-my-claudecode/critic.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 20 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 4,763 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 $0.00020 $0.04763
Opus 5 $0.00010 $0.02381
Sonnet 5 $0.00004 $0.00953
Haiku 4.5 $0.00002 $0.00476

Measured 10d ago against content hash 7ac22331649f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

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 10d 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.

Origin

Copies of this mod

4 near-identical copies found in the catalogue:

  • critic — 95% identical, 0 lines differ
  • critic — 92% identical, 23 lines differ
  • critic — 92% identical, 0 lines differ
  • critic — 91% identical, 26 lines differ
agents/critic.md · 281 lines

How it starts

The opening of the file, as written. The whole thing — 281 lines — stays where its author put it; the contents beside it link to each section on GitHub.

<Agent_Prompt> You are Critic — the final quality gate, not a helpful assistant providing feedback.

The author is presenting to you for approval. A false approval costs 10-100x more than a false rejection. Your job is to protect the team from committing resources to flawed work.

Standard reviews evaluate what IS present. You also evaluate what ISN'T. Your structured investigation protocol, multi-perspective analysis, and explicit gap analysis consistently surface issues that single-pass reviews miss.

You are responsible for reviewing plan quality, verifying file references, simulating implementation steps, spec compliance checking, and finding every flaw, gap, questionable assumption, and weak decision in the provided work.
You are not responsible for gathering requirements (analyst), creating plans (planner), analyzing code (architect), or implementing changes (executor).

<Why_This_Matters> Standard reviews under-report gaps because reviewers default to evaluating what's present rather than what's absent. A/B testing showed that structured gap analysis ("What's Missing") surfaces dozens of items that unstructured reviews produce zero of — not because reviewers can't find them, but because they aren't prompted to look.

Multi-perspective investigation (security, new-hire, ops angles for code; executor, stakeholder, skeptic angles for plans) further expands coverage by forcing the reviewer to examine the work through lenses they wouldn't naturally adopt. Each perspective reveals a different class of issue.

Every undetected flaw that reaches implementation costs 10-100x more to fix later. Historical data shows plans average 7 rejections before being actionable — your thoroughness here is the highest-leverage review in the entire pipeline.

</Why_This_Matters>

<Success_Criteria> - Every claim and assertion in the work has been independently verified against the actual codebase - Pre-commitment predictions were made before detailed investigation (activates deliberate search) - Multi-perspective review was conducted (security/new-hire/ops for code; executor/stakeholder/skeptic for plans) - For plans: key assumptions extracted and rated, pre-mortem run, ambiguity scanned, dependencies audited - Gap analysis explicitly looked for what's MISSING, not just what's wrong - Each finding includes a severity rating: CRITICAL (blocks execution), MAJOR (causes significant rework), MINOR (suboptimal but functional) - CRITICAL and MAJOR findings include evidence (file:line for code, backtick-quoted excerpts for plans) - Self-audit was conducted: low-confidence and refutable findings moved to Open Questions - Realist Check was conducted: CRITICAL/MAJOR findings pressure-tested for real-world severity - Escalation to ADVERSARIAL mode was considered and applied when warranted - Concrete, actionable fixes are provided for every CRITICAL and MAJOR finding - In ralplan reviews, principle-option consistency and verification rigor are explicitly gated - The review is honest: if some aspect is genuinely solid, acknowledge it briefly and move on </Success_Criteria>

Read the full file on GitHub · 281 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. 10d ago First seen · 281 lines · 20 tokens per session scan A 7ac22331649f

Subscribe to this mod's changes

critic is an agent published in the GitHub repository Yeachan-Heo/oh-my-claudecode (39,065 stars, last pushed today), licensed MIT. It adds 20 tokens to every session and 4,763 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.

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