tauri-plugin-axum

A Tauri plugin that integrates the Axum web framework directly into your Tauri application. It provides a convenient way to expose APIs via custom protocols or through an HTTP-like interface inside the Tauri WebView.

---

✨ Features

• Custom protocol registration

  // Important: if you use a custom protocol, register it *before* the setup hook.
  // https://docs.rs/tauri/2.8.2/tauri/plugin/struct.Builder.html#known-limitations
  tauri::Builder::default().plugin(tauri_plugin_axum::init(Router::new()))

Once registered, you can access your Axum routes via:

• macOS, iOS, and Linux: axum://localhost/<path>
• Windows and Android: http://axum.localhost/<path> (default)

⚠️ Note: Custom protocols currently do not support streaming. (#1404)

• Partial stream body support

  Supports streaming responses using either the provided fetch API or an Axios adapter:

  import { fetch } from "@mcitem/tauri-plugin-axum/fetch";
  import { Adapter } from "@mcitem/tauri-plugin-axum/axios";

---

📦 Installation

Rust crate:

cargo add tauri-plugin-axum

npm package:

# Optional
pnpm i @mcitem/tauri-plugin-axum

Add required capability in src-tauri/capabilities/default.json:

{
  // ...
  "permissions": ["axum:default"]
  // ...
}

---

🚀 Usage Example

Rust

// URI scheme protocols are registered when the WebView is created.
// If the plugin is registered after a WebView has been created,
// the protocol will not be available.
//
// macOS, iOS, Linux: axum://localhost/<path>
// Windows, Android: http://axum.localhost/<path> (default)

tauri::Builder::default().plugin(tauri_plugin_axum::init(Router::new()));

window.fetch("http://axum.localhost/");

#[derive(Serialize, Deserialize)]
struct Greet {
    axum: String,
    tauri: String,
}

async fn post_handle(Json(j): Json<Greet>) -> Json<Greet> {
    Json(Greet {
        axum: format!("axum, {}!", j.axum),
        tauri: format!("tauri, {}!", j.tauri),
    })
}

// Initialize router asynchronously
tauri::Builder::default()
    .setup(|app| {
        let path = app.path().app_config_dir()?;
        app.handle().plugin(tauri_plugin_axum::block_init(async {
            println!("Application config path: {:?}", path);
            router::router()
        }))?;
        Ok(())
    });

TypeScript

// Using fetch
import { fetch } from "@mcitem/tauri-plugin-axum/fetch";

fetch("/", { method: "GET" })
  .then((res) => res.text())
  .then((res) => console.log(res));

// Using Axios adapter
import axios from "axios";
import { Adapter } from "@mcitem/tauri-plugin-axum/axios";

const instance = axios.create({ adapter: Adapter });

---

📚 Example Project

• Example App

  • main.tsx
  • lib.rs

Run Example

git clone https://github.com/mcitem/tauri-plugin-axum
cd tauri-plugin-axum
pnpm install
pnpm build
pnpm --filter tauri-app install
pnpm --filter tauri-app tauri dev