Faasta is a Function-as-a-Service platform for Rust functions compiled as WASI HTTP components.

• Build Rust handlers as WASIp3-facing wasi:http/service components
• Use one application dependency: faasta
• Return JSON or HTML with faasta::http::{Json, Html}
• Inject SQL, KV, and blob storage with Sql, Kv, and Blobs
• Run components in-process with Wasmtime
• Self-host with Postgres, Garage/S3, and Valkey for distributed storage

use faasta::http::Html;

#[faasta::handler]
async fn handle() -> faasta::Result<Html<String>> {
    Ok(Html("<h1>Hello from Faasta</h1>".to_string()))
}

cargo faasta new my-function
cd my-function
cargo faasta build
cargo faasta deploy

cargo faasta build wraps the WASIp3 component build so application projects do not need to know the Rust target or artifact layout.

For self-hosting and storage configuration, see server/README.md and server/infra/capabilities.md.