Ultimo

Build type-safe full-stack applications with Rust backend and TypeScript frontend, automatically synced.

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✨ Key Features

• ⚡ Blazing Fast - 158k+ req/sec, industry-leading performance
• 🔒 Type-Safe - End-to-end type safety from Rust to TypeScript
• 🚀 Auto TypeScript - Generate type-safe clients automatically
• 📋 OpenAPI Built-in - Generate specs for Swagger UI and API docs
• 🎯 Hybrid API - Support both REST and RPC-style endpoints
• 🔧 CLI Tools - Build, develop, and generate clients with ease

🚀 Quick Example

use ultimo::prelude::*;
 
#[tokio::main]
async fn main() -> ultimo::Result<()> {
    let mut app = Ultimo::new();
 
    app.get("/", |ctx: Context| async move {
        ctx.json(json!({"message": "Hello, Ultimo!"})).await
    });
 
    app.listen("127.0.0.1:3000").await
}

📊 Performance

Ultimo delivers exceptional performance, matching industry-leading frameworks:

15x faster than FastAPI with zero performance penalty for auto-generation.

🎯 Type-Safe Full Stack

rpc.query("getUser", |input: GetUserInput| async move {
    Ok(User { id: input.id, name: "Alice".into() })
});
 
// Auto-generate TypeScript client
rpc.generate_client_file("../frontend/src/lib/client.ts")?;

const user = await client.getUser({ id: 1 });
console.log(user.name); // ✅ Fully type-safe!

📚 Learn More

• Getting Started - Install and create your first app
• RPC System - Build type-safe APIs
• TypeScript Clients - Auto-generated clients
• OpenAPI Support - Generate API specs
• Examples - Sample projects

🌟 Why Ultimo?

✅ Single Source of Truth - Types defined in Rust, auto-sync to TypeScript
✅ Zero Boilerplate - No manual API typing or client code
✅ Production Ready - Built-in validation, auth, rate limiting
✅ Great DX - Full IDE autocomplete and type checking
✅ Performance - Rust speed with modern async runtime