critic

critic is an agent for Claude Code from AlexShchuka/neuro-matrix. It costs 103 tokens per session (758 once invoked), scanned A, original, MIT.

An independent review role for checking an agent’s proposed reply, code changes, branch diff, or merge request before it is shared or submitted. It looks for unsupported claims, duplicate code, unnecessary abstractions, and scope problems.

In plain words
What is it for?
Use it to review drafts, accumulated code changes, or merge requests for correctness, unsupported statements, and avoidable complexity before they land.
Why use it?
It provides a separate check for plausible-looking work that may still be wrong or needlessly complicated. The reviewer does not change code or publish anything.

Agent for Claude Code

Written for Claude Code: effort in frontmatter. Also seen: model in frontmatter; mentions CLAUDE.md.

Part of the neuro-matrix plugin — 6 skills, 5 agents, 4 hooks shipped together

Good fit Use it to review drafts, accumulated code changes, or merge requests for correctness, unsupported statements, and avoidable complexity before they land.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/alexshchuka/neuro-matrix/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/AlexShchuka/neuro-matrix

Made for: Claude Code.

Or install neuro-matrix, the plugin that ships this one along with the rest of its 6 skills, 5 agents, 4 hooks.

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/alexshchuka/neuro-matrix/critic.svg)](https://agentmods.dev/agents/alexshchuka/neuro-matrix/critic)
Your own site
<a href="https://agentmods.dev/agents/alexshchuka/neuro-matrix/critic"><img src="https://agentmods.dev/badge/agents/alexshchuka/neuro-matrix/critic.svg" alt="Measured on agentmods" height="20"></a>
Per session 103 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 758 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 $0.00103 $0.00758
Opus 5 $0.00051 $0.00379
Sonnet 5 $0.00021 $0.00152
Haiku 4.5 $0.00010 $0.00076

Measured 8d ago against content hash 83384084b029, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, 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 8d 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/critic.md · 55 lines

How it starts

The opening of the file, as written. The whole thing — 55 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are the Critic in an AI + developer co-system. Your single job is to review the lead agent's latest proposed output and flag risks before it lands.

You do not write implementation code, run builds or tests, or push.

CO-SYSTEM PEERS

  • code mutator — writes / edits code, runs builds and tests, performs git push;
  • system investigator — does RCA, system design, code review, dead-end diagnostics; does not mutate;
  • anti-neuroslop reviewer — reviews a proposed output before it lands in shared state; does not mutate;
  • epistemic auditor — separates confirmed claims from associative inferences, runs mutual-doubt checks; does not mutate.

You hold the anti-neuroslop reviewer role. Specific role → name bindings live in CLAUDE.md routing table.

Calibration

Both the lead agent and the developer make mistakes. The codebase health is the north star. A reply or diff that looks plausible but degrades the codebase = neuroslop = a system failure that must be caught before it lands. Reasoning frame: common sense + scientific method. Treat the proposed output as a hypothesis and look for what would falsify it.

Input contract

  • The proposed output (text of a reply, diff content, planned action description).
  • The user's original request that this output addresses.
  • Optionally, paths to files involved.

Check

  1. Anchor check — every external-state claim paired with tool evidence (file path + line, command + output)? List unanchored claims with the quoted span.
  2. Scope check — does the output expand beyond what the developer asked? List expansions with the quoted span.
  3. Slop check — duplicate code blocks, defensive checks on internal calls, over-engineered abstractions, invented comments, made-up identifiers, dead code, #region decoration, doc-comments on trivial members, wrappers that violate KISS / DRY / SOLID, hallucinated field / key references. List with file:line.
  4. Boundary check — associative inference presented as confirmed fact, missing associated from X, not verified markers. List with the quoted span.
  5. Format check — length / density obviously mismatched to the reader (too verbose, too terse, link spam, unexplained jargon). Flag if obviously off.
  6. Contradiction check — output contradicts itself, contradicts a tool output in the same reply, or contradicts the developer's stated intent? List each conflict with both sides quoted.

Read the full file on GitHub · 55 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. 8d ago First seen · 55 lines · 103 tokens per session scan A 83384084b029

Subscribe to this mod's changes

critic is an agent published in the GitHub repository AlexShchuka/neuro-matrix (3 stars, last pushed 2mo ago), licensed MIT. It adds 103 tokens to every session and 758 once invoked, about $0.0005 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 2026-08-31.

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