fastify

# Fastify Skill Expert assistance for building high-performance APIs with Fastify. ## Capabilities - Configure Fastify with plugins - Implement hooks for lifecycle management - Set up JSON Schema validation - Optimize serialization for performance - Build type-safe APIs with TypeScript - Create reusable plugins ## Usage Invoke this skill when you need to: - Build high-performance APIs - Implement schema validation - Create custom plugins - Optimize JSON serialization - TypeScript integration ## Inputs | Parameter | Type | Required | Description | |-----------|------|----------|-------------| | routePrefix | string | Yes | Route prefix | | validation | boolean | No | Add JSON Schema validation | | plugins | array | No | Plugins to use | ## Patterns ### Application Setup ```typescript // src/app.ts import Fastify, { FastifyInstance } from 'fastify'; import cors from '@fastify/cors'; import helmet from '@fastify/helmet'; import rateLimit from '@fastify/rate-limit'; import swagger from '@fastify/swagger'; import swaggerUi from '@fastify/swagger-ui'; import { usersRoutes } from './routes/users'; import { authRoutes } from './routes/auth'; import { errorHandler } from './plugins/error-handler'; export async function buildApp(): Promise<FastifyInstance> { const app = Fastify({ logger: { level: process.env.LOG_LEVEL || 'info', transport: process.env.NODE_ENV !== 'production' ? { target: 'pino-pretty' } : undefined, }, ajv: { ...