Claude Code & Cursor rules for cursor

Pre-configured MCP server setup for PostgreSQL (query + migrate), Redis (cache management), GitHub (PRs + issues + actions), Sentry (error tracking + triage), and Vercel (deploy + env management). Complete JSON configs for Claude Code and Cursor with connection string templates, auth setup, permission scoping, and usage examples for each server.

Cursor rules for Django 5.1+ with Django REST Framework — fat models with custom managers, lean views, serializer patterns, queryset optimization (select_related/prefetch_related), Celery task patterns, and the security settings LLMs always forget.

Cursor rules for FastAPI 0.115+ with Pydantic v2 — dependency injection patterns, async/sync router decisions, response models, error handling, middleware, background tasks, and the SQLAlchemy async session pattern that actually works in production.

18 opinionated Cursor rules for production Next.js 16 apps. Covers `use cache` directive with cacheLife/cacheTag, Partial Prerendering (PPR), middleware stacking for auth + i18n + rate limiting, Server Actions with optimistic updates, ISR revalidation strategies, error boundary patterns, Turbopack config, and a pre-deploy checklist. Not generic advice — specific patterns with code.

12 extremely opinionated Cursor rules that enforce zero-tolerance TypeScript. No `any` (ever), strict null checks, exhaustive switch statements, branded types for IDs, const assertions, discriminated unions for state machines, and proper error types. Every rule includes a BAD example and a GOOD example. For developers who are tired of `as any` and `// @ts-ignore`.

Cursor rules for Swift 6 and SwiftUI — the Observation framework (@Observable, not ObservableObject), SwiftData (not Core Data), structured concurrency, NavigationStack patterns, and strict concurrency checking that Swift 6 enforces.

15 Cursor rules (.mdc files) optimized for minimal token consumption while maintaining full behavioral control. Every rule includes a measured token cost annotation, and most are under 100 tokens. The set includes before/after comparisons showing how typical verbose rules waste tokens on examples the model already knows. Covers: code style, error handling, testing, TypeScript, React, API design, git workflow, security, and accessibility. Designed for developers on Cursor Pro who hit usage limits, or anyone who wants more context window for their actual code.

The PatrickJS awesome-cursorrules collection, indexed by framework — React, Next.js, Vue, Python, Go, Rails, Flutter and more. One-click install per rule. Updated weekly.

Cursor rules for Axum 0.8+ web APIs — extractors, state management, Tower middleware, error handling with thiserror, SQLx queries, and the ownership patterns that LLMs consistently get wrong. Includes tracing setup and graceful shutdown.

The biggest curated list of Model Context Protocol (MCP) servers with contributions from hundreds of companies and developers. Covers official reference servers, company-maintained integrations, and community-built servers spanning databases, cloud platforms, developer tools, search engines, payment systems, and much more.

Cursor rules for Rails 8 — Solid Queue (default job backend), Solid Cache, Kamal 2 deployment, Hotwire (Turbo + Stimulus), Authentication generator, and the Rails conventions LLMs break by writing controller logic in views.

Opinionated Cursor rules for Next.js 16 — Cache Components with 'use cache', Partial Prerendering (PPR), the new proxy middleware (renamed from middleware.ts), async params/searchParams, and cacheLife/cacheTag patterns. Targets the actual breaking changes, not rehashed docs.