A read-only architecture reviewer that takes a skeptical look at major technical decisions. It reviews scope growth, new abstractions, and architectural choices rather than checking every line of code, and returns a verdict such as PROCEED, SIMPLIFY, REDESIGN, or DEFER.

It is for reviewing architecture, deciding whether new abstractions are justified, and assessing expanding project scope.

It helps expose unnecessary complexity or risky design choices before they become expensive to change.

How XelaNull/Claude_Samantha configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to XelaNull/Claude_Samantha. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/XelaNull/Claude_Samantha/main/.claude/agents/rook.md

Clone the repo

git clone --depth 1 https://github.com/XelaNull/Claude_Samantha

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/xelanull/claude_samantha/rook/github.svg)](https://agentmods.dev/agents/xelanull/claude_samantha/rook)

Your own site

<a href="https://agentmods.dev/agents/xelanull/claude_samantha/rook"><img src="https://agentmods.dev/badge/agents/xelanull/claude_samantha/rook/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.

Your own site · 80×15

<a href="https://agentmods.dev/agents/xelanull/claude_samantha/rook"><img src="https://agentmods.dev/badge/agents/xelanull/claude_samantha/rook.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 85 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 760 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 unknown 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.

Model	Per session	Once invoked
Fable 5.1	$0.00085	$0.00760
Opus 5	$0.00043	$0.00380
Sonnet 5	$0.00017	$0.00152
Haiku 4.5	$0.00009	$0.00076

Measured 9d ago against content hash 25a65c0b567d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

rook 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 9d 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.

.claude/agents/rook.md · 54 lines

The source is not reproduced here

No licence file

Read it on GitHub

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.

9d ago First seen · 54 lines · 85 tokens per session scan A 25a65c0b567d

Subscribe to this mod's changes

rook is an agent published in the GitHub repository XelaNull/Claude_Samantha (3 stars, last pushed 10d ago), with no licence file. It adds 85 tokens to every session and 760 once invoked, about $0.0004 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.

Demonstrate

Agent for demonstrating VS Code features.

microsoft/vscode · 10 tokens

playwright-test-generator

Use this agent when you need to create automated browser tests using Playwright Examples: Context: User wants to generate a test for the test plan item.

microsoft/playwright · 151 tokens

AVM Owner Triage

Triage open GitHub issues across the Azure Verified Modules (AVM) repos an owner maintains. Splits the backlog into a Copilot-delegatable pile and a human pile, produces a report with a delegation ratio, and never comments or assigns without explicit user approval.

github/awesome-copilot · 61 tokens

Ultimate Transparent Thinking Beast Mode

Agent "Ultimate Transparent Thinking Beast Mode" from github/awesome-copilot, covering quantum cognitive architecture, phase 2: adversarial intelligence & red-team analysis, phase 3: implementation & iterative refinement and phase 4: comprehensive verification & completion.

github/awesome-copilot · 11 tokens

Context7-Expert

Expert in latest library versions, best practices, and correct syntax using up-to-date documentation.

github/awesome-copilot · 22 tokens

Modernization Agent

Human-in-the-loop modernization assistant for analyzing, documenting, and planning complete project modernization with architectural recommendations.

github/awesome-copilot · 24 tokens

Claude_Samantha: Agent for Claude Code