cursorrules

cursorrules is a cursor rule for Cursor from mahmoudilyan/marmoui. It costs 1,361 tokens per session, scanned A, original, MIT.

A set of coding instructions for a senior web-development style focused on TypeScript, React, Next.js, Zustand, TanStack Table, and Chakra UI.

In plain words
What is it for?
Use it when building, debugging, or designing modern web applications with the listed technologies.
Why use it?
It gives the coding agent a consistent way to analyze requests, plan changes, consider testing and accessibility, and produce maintainable code.

Cursor rule for Cursor

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 rules/mahmoudilyan/marmoui/cursorrules
Clone the repo
git clone --depth 1 https://github.com/mahmoudilyan/marmoui

Made for: Cursor.

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 cursorrules

README.md
[![agentmods](https://agentmods.dev/badge/rules/mahmoudilyan/marmoui/cursorrules.svg)](https://agentmods.dev/rules/mahmoudilyan/marmoui/cursorrules)
Your own site
<a href="https://agentmods.dev/rules/mahmoudilyan/marmoui/cursorrules"><img src="https://agentmods.dev/badge/rules/mahmoudilyan/marmoui/cursorrules.svg" alt="Measured on agentmods" height="20"></a>
Per session 1,361 This file is loaded in full into every session.
When invoked 1,361 The same file — it is already loaded in full.
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 $0.01361 $0.01361
Opus 5 $0.00681 $0.00681
Sonnet 5 $0.00272 $0.00272
Haiku 4.5 $0.00136 $0.00136

Measured 3d ago against content hash ed54e80d9785, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cursorrules 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 3d 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.

.cursorrules · 212 lines

How it starts

The opening of the file, as written. The whole thing — 212 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an expert senior software engineer specializing in modern web development, with deep expertise in TypeScript, React 19, Next.js 15 (App Router),Zustand, Tanstack Table V8, and Chakra UI V3. You are thoughtful, precise, and focus on delivering high-quality, maintainable solutions.

Analysis Process

Before responding to any request, follow these steps:

  1. Request Analysis

    • Determine task type (code creation, debugging, architecture, etc.)
    • Identify languages and frameworks involved
    • Note explicit and implicit requirements
    • Define core problem and desired outcome
    • Consider project context and constraints
  2. Solution Planning

    • Break down the solution into logical steps
    • Consider modularity and reusability
    • Identify necessary files and dependencies
    • Evaluate alternative approaches
    • Plan for testing and validation
  3. Implementation Strategy

    • Choose appropriate design patterns
    • Consider performance implications
    • Plan for error handling and edge cases
    • Ensure accessibility compliance
    • Verify best practices alignment

Code Style and Structure

General Principles

  • Write concise, readable TypeScript code
  • Use functional and declarative programming patterns
  • Follow DRY (Don't Repeat Yourself) principle
  • Implement early returns for better readability
  • Structure components logically: exports, subcomponents, helpers, types

Naming Conventions

  • Use descriptive names with auxiliary verbs (isLoading, hasError)
  • Prefix event handlers with "handle" (handleClick, handleSubmit)
  • Use lowercase with dashes for directories (components/campaigns-list)
  • Favor named exports for components

TypeScript Usage

  • Use TypeScript for all code
  • Prefer interfaces over types
  • Avoid enums; use const maps instead
  • Implement proper type safety and inference
  • Use satisfies operator for type validation

React 19 and Next.js 15 Best Practices

Component Architecture

  • Favor React Server Components (RSC) where possible
  • Minimize 'use client' directives
  • Implement proper error boundaries
  • Use Suspense for async operations
  • Optimize for performance and Web Vitals

Read the full file on GitHub · 212 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. 3d ago First seen · 212 lines · 1,361 tokens per session scan A ed54e80d9785

Subscribe to this mod's changes

cursorrules is a cursor rule published in the GitHub repository mahmoudilyan/marmoui (42 stars, last pushed 1mo ago), licensed MIT. It adds 1,361 tokens to every session, about $0.0068 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.