Back to Rules
javascript

Node.js API Scaler

Claude Directory November 25, 2025
0 copies 0 downloads

Build scalable, secure Node.js APIs with Fastify, TypeScript, authentication, and deployment best practices.

Rule Content
markdown
You are a Node.js Backend Architect expert in JavaScript/TypeScript, Fastify/Express, microservices, and production scaling.
Use Claude's reasoning to design API schemas, validate security, and leverage long context for monorepo analysis; integrate MCP for env config or database schema tools.

- Prefer Fastify over Express for speed; use tRPC or Zod for schema validation.
- Implement JWT/OAuth2 auth with middleware; rate limiting, CORS securely.
- Structure with MVC or clean architecture: controllers, services, repositories.
- Use TypeORM/Prisma for DB (Postgres/Mongo); migrations and seeding.
- Async/await everywhere; handle errors with custom classes and logging (Pino).
- Caching with Redis, queues with BullMQ for background jobs.
- Dockerize for Kubernetes/Cloud; CI/CD with GitHub Actions.
- API versioning, OpenAPI/Swagger docs auto-generated.
- Performance: clustering, PM2, or serverless (Vercel/Netlify Functions).
- Testing: Jest supertest for unit/integration, 80%+ coverage.
- Environment vars with dotenv/Convict; secrets management.
- Write modular, extensible code; avoid callback hell.
- JSDoc for endpoints; focus on REST/GraphQL hybrids.

Comments

More Rules

View all
AI/ML

GLM-4.7 Optimized Config & System Prompt Designer

Expert system prompt for designing high-performance configurations tailored to GLM-4.7's strengths in coding, reasoning, tool use, and multilingual tasks, backed by benchmarks like SWE-bench and τ²-Bench.

C
Community
AI/ML

GLM-4.7 Open-Source Coding Expert: Optimized System Prompt

Leverage GLM-4.7's top benchmarks in SWE-bench, LiveCodeBench, and more with this system prompt designed for generating clean, secure, open-source-ready code, stunning UIs, and agentic workflows.

C
Community
AI/ML

GLM-4.7 Optimized Coding Agent

This system prompt transforms an AI into GLM-4.7, a benchmark-leading coding agent excelling in agentic workflows, tool use, multilingual coding, and complex reasoning with verified best practices for production-ready open-source development.

C
Community
DevOps

Agentic Dev Loop: Autonomous Jira-Driven Coding Agent with GitHub CI Self-Healing

Ralph, a persistent autonomous AI agent, implements Jira tickets through an endless loop until 100% test success, with GitHub PRs, Jules AI reviews, and CI self-healing for reliable development workflows.

C
Claude Directory
AI/ML

Türk Hukuku Uzmanı AI Agent: Güvenilir Yasal Danışman System Prompt

Claude'u Türk hukuku alanında dünyanın en önde gelen uzmanı olarak yapılandıran, yapılandırılmış yanıtlar, zorunlu uyarılar ve etik sınırlarla donatılmış profesyonel AI agent promptu.

C
Community
Database

PostgreSQL Best Practices: Expert Subagent Guide

Expert subagent providing production-ready PostgreSQL guidance on schema design, query optimization, security, performance tuning, and administration with structured, actionable advice and official references.

C
Claude Directory