Introduction to Jetpath

Write Once, Run Cross-runtime

Jetpath is a performance-first, cross-runtime API framework designed to eliminate boilerplate and cognitive overhead in API development.

What Makes Jetpath Special?

• Write Once, Run Cross-runtime: Your code runs seamlessly on Node.js, Deno, Bun, AWS Lambda, and Cloudflare Workers. No runtime lock-in.
• Zero-Router Magic: Create endpoints by simply writing functions. No route definitions, no configuration files.
• TypeScript First: Built with TypeScript from the ground up, giving you type safety with JavaScript flexibility.
• No Boring Parts: Convention-based routing, auto-generated API docs, and built-in validation mean you focus on features, not plumbing.

How It Works

Jetpath uses smart conventions and naming-based routing. Instead of writing route definitions, you just:

1. Create .jet.ts files in your src directory
2. Export functions with intuitive names like METHOD_path_segments
3. That's it.

For example, create src/users.jet.ts with:

import { type JetRoute } from "jetpath";

// This becomes GET /users
export const GET_users: JetRoute = (ctx) => {
  ctx.send({ message: "runs on any runtime!" });
};

The Best Parts

• Fast Development: No configuration files or complex setup. Write code and go.
• Automatic API Docs: Define validation schemas once, get interactive API documentation that stays in sync with your code.
• Type Safety: Full TypeScript support with generics for request body, params, query, and response types.
• Extensible: Extend Jetpath with plugins for auth, logging, file uploads, or anything else.
• Smart Conventions: Function naming conventions mean your code structure matches your API structure.
• Performance: Trie-based routing, context pooling, and minimal abstractions keep throughput high.

Jetpath is for:

• Startups: Rapidly iterate on your API while maintaining type safety
• Enterprise Teams: Build maintainable, scalable APIs that work across multiple runtimes
• Full-Stack Developers: A backend framework that matches the joy of frontend development
• Anyone Who Hates Boilerplate: Jetpath handles the boring stuff so you can focus on what matters

Ready to Get Started?

• Quick Start: Follow our Quick Start guide to build your first API in minutes
• Core Concepts: Explore Routing to understand how everything works together
• AI Assistants: Using an LLM? Install the Jetpath Skill to superpower your AI workflow.

Join the Discord community.

LLM IDE Integration

If you use LLM IDEs like Claude Code, you can give it expert-level knowledge of Jetpath by installing the official Jetpath Framework Skill. This teaches the LLM about Jetpath's file-based routing, validation schemas, context object, and production patterns.

Run this command in your project directory:

claude config add skills https://raw.githubusercontent.com/codedynasty-dev/jetpath/main/jetpath-backend-framework-skill/SKILL.md