Vapor Framework Guide

Applies to: Vapor 4.x, Swift 5.9+, Fluent ORM, Leaf Templates, Server-Side Swift Language Guide: @.claude/skills/swift-guide/SKILL.md

Overview

Vapor is a server-side Swift framework for building web applications, REST APIs, and backend services. It provides type-safe routing, Fluent ORM, async/await concurrency, JWT authentication, and Leaf templating.

Use Vapor when:

• Building Swift-native backend services
• Sharing code between iOS/macOS clients and the server
• You need type-safe, compile-time-checked API development
• You want async/await patterns throughout the stack

Consider alternatives when:

• Team lacks Swift experience
• You need a massive middleware ecosystem (consider Express, Rails)
• Maximum raw performance is critical (consider Rust/Actix-web)