Hello World (SwiftUI)

A minimal RivetKit example that pairs a simple server with a SwiftUI app. The counter broadcasts updates in real time, so multiple app instances stay in sync.

Server

bash

cd rivetkit-swift/examples/hello-world-swiftui/server
pnpm install
pnpm dev

The server listens on http://127.0.0.1:8787 and exposes RivetKit at http://127.0.0.1:8787/api/rivet.

SwiftUI App (macOS)

Open the Xcode project and run it:

bash

cd rivetkit-swift/examples/hello-world-swiftui/client
open HelloWorldApp.xcodeproj

The app connects to http://127.0.0.1:8787/api/rivet by default. Override this if you are running the server elsewhere:

bash

RIVET_ENDPOINT=http://<host-ip>:8787/api/rivet

Set the environment variable in Xcode's scheme (Run > Arguments > Environment Variables) or when using swift run.

Notes

The server uses registry.serve() for a fetch-handler setup.
The SwiftUI client uses @Actor and listens for newCount to update the UI.
Use the Actor Key text field to connect to a different actor instance.
For a CLI Swift example, see examples/hello-world-cli.