Cursor Project Rules enhance Cursor AI editor behavior with project-specific guidance and reusable coding standards.
Cursor AI is an AI-powered code editor. Cursor Project Rules are Markdown-based .mdc files that live in .cursor/rules/ and tell Cursor how to behave for specific projects, file types, frameworks, and workflows.
Cursor rules help developers define project-specific instructions for Cursor AI. This repository uses the modern .mdc Project Rules format.
Customized behavior means Cursor can respond to the specific needs of a project instead of relying only on general coding knowledge. Rules can describe local architecture, preferred libraries, common methods, domain constraints, and other context that makes generated code more relevant.
Consistency is the other big win. By defining coding standards and best practices in .mdc files, teams can guide Cursor toward code that matches the project's style, naming, structure, and review expectations.
Project rules also reduce repeated manual editing. Well-scoped rules give Cursor reusable project knowledge up front, so suggestions are more likely to fit the codebase on the first pass and less likely to need the same corrections again.
For teams, shared .cursor/rules/*.mdc files keep AI assistance aligned across contributors. Everyone can work from the same project-specific guidance, whether the rule covers framework usage, security requirements, testing conventions, or workflow details.
By adding selected .mdc files to .cursor/rules/, you can use these rules directly in your project.
Next.js 15 (Supabase, TypeScript, Security) - 27 architecture rules preventing AI hallucinations: insecure auth (getSession vs getUser), synchronous params, deprecated imports, missing RLS, and Stripe key exposure. Built for Cursor Agent and Claude Code.
Next.js (TanStack Query v5) - Next.js App Router with TanStack Query v5, covering the HydrationBoundary pattern, Server Actions as mutations, and optimistic updates.
React (FormEngine AI Form Builder) - Generating React forms from screenshots, PDFs, HTML, or text descriptions with validated FormEngine JSON schema. Renders through RSuite, Material UI, or Mantine.
Vue/Nuxt Full AI Stack - Complete AI coding setup for Vue 3 & Nuxt 3 with Cursor Project Rules, CLAUDE.md, Copilot instructions, and generation skills.
Backend and Full-Stack
Cloudflare Workers (Hono, Angular) - Full-stack SaaS applications on Cloudflare Workers with Hono APIs, Angular frontends, typed RPC, D1/Neon, and production observability.
Manifest - YAML-based configuration and metadata files.
Momen.app (Backend-as-a-Service) - Building custom frontends with Momen.app as headless BaaS with GraphQL API, actionflows, AI agents, and Stripe integration.
WordPress Full AI Stack - Complete AI coding setup for WordPress — themes, plugins, Gutenberg, WooCommerce, ACF, REST API with Cursor Project Rules, CLAUDE.md, Copilot instructions, and 5 generation skills.
Unity (C#) - Unity development with C# integration.
CSS and Styling
Landing Page Image Quality - Avoiding placeholder or broken image URLs, using stable visual assets, and checking alt text, dimensions, licensing, and responsive behavior.
Toss-Style Design System - Disciplined product UI with restrained color, grayscale hierarchy, typography, cards, metrics, dark mode, and accessibility.
Xray Test Case - Xray development with test case integration.
Hosting and Deployments
Cloudflare Email to Telegram - Setting up email-to-Telegram forwarding via Cloudflare Email Routing and Workers using the mail2tg CLI.
Netlify - Official deployment platform integration.
Vercel - Deployment with serverless functions, Edge Runtime, middleware, caching, CI/CD, and production-ready configuration.
Build Tools and Development
AI Agent Specialist - TypeScript, React, Node.js, clean architecture, testing, and WHY-oriented engineering guidance.
Alpha Skills - Quantitative factor research skills for Cursor. Evaluate factors, run backtests, mine new alpha through natural language.
Anti-Over-Engineering - Keeping changes scoped, simple, and directly tied to the user's request.
Anti-Sycophancy Code Discipline - 17 directives blocking the most common LLM coding honesty failures: hallucinated APIs, invented signatures, false-confidence validation, manufactured-urgency capitulation, authority-driven softening, and self-referential comments. Drop the .mdc in .cursor/rules/.
Network Troubleshooting - Safety-first diagnostics for developer network failures with target-scoped checks, TLS and proxy guardrails, and user-approved remediation.
The description field explains the rule's purpose to Cursor and contributors. The globs field lists the file patterns where the rule should auto-attach. Use alwaysApply: false to keep the rule scoped to matching or requested context, and use alwaysApply: true only for universal guidance that should apply to every request.
Update the main README.md file, adding your contribution to the appropriate category.
Ensure your contribution follows the repository formatting and naming guidelines.
Submit a pull request.
Please ensure your contribution is original or properly credited if based on existing work. Keep descriptions neutral, practical, and focused on reusable Cursor rule value.
Footnotes
Sponsorships
coderabbit.ai - Cut code review time and bugs in half.
Unblocked MCP - Team knowledge for Cursor workflows.
Warp - Terminal workflows for coding with multiple AI agents.
