Introduction

Introduction to Cosmos

Cosmos is an AI-first development platform designed to help you build modern applications faster. It consists of:

Core Components

Stitch

A web component library optimized for AI consumption. Built with Lit and Preact Signals, Stitch components are:

• AI-readable - Clean, predictable APIs that AI can understand and generate
• Framework-agnostic - Works with React, Vue, Svelte, or vanilla JS
• Fast - Reactive updates via signals, minimal bundle size

<script type="module">
  import 'https://cdn.getcosmos.dev/stitch.esm.min.js';
</script>

<stx-button variant="primary">Click me</stx-button>

API

REST API for authentication, AI generation, and data management. Built with Hono on Cloudflare Workers.

• Auto-documented - OpenAPI spec with Scalar UI
• Type-safe - Zod validation on all endpoints
• Edge-deployed - Low latency globally

Desktop App

Native desktop application built with Tauri v2. Features:

• Local-first architecture with SQLite
• Syncs with cloud when online
• Cross-platform (Windows, macOS, Linux)

Philosophy

Cosmos is built around one core idea: AI is the primary consumer of your code.

This means:

• APIs are designed to be predictable and well-documented
• Components have clear, consistent interfaces
• Everything is type-safe and validated

Ready to get started? Check out the Quick Start guide.