Zuvo Docs

Guide

Use Zuvo with iOS and SwiftUI

Learn how to create a Zuvo project, add some sample data to your database, and query the data from an iOS app.

2. Set up your database

When your Zuvo project is up and running, create an instruments table with some sample data. Then set only the privileges each Postgres role needs, add Row Level Security (RLS) for enhanced security for database data by default, and create an RLS policy to make the data in the table publicly readable.

Do these steps within your project's dashboard by copying and running the snippet in your project's SQL Editor.

-- Create the table
create table instruments (
  id bigint primary key generated always as identity,
  name text not null
);

-- Insert sample data into the table
insert into instruments (name)
values
  ('violin'),
  ('viola'),
  ('cello');

-- Grant the privileges the role needs, which is read access
grant select on public.instruments to anon;

-- Enable row level security for the table
alter table instruments enable row level security;

-- Create a policy to allow the anon role to read from the instruments table
create policy "public can read instruments"
on public.instruments
for select to anon
using (true);

3. Create an iOS SwiftUI app with Xcode

Select the Xcode > New Project > iOS > App menu item.

4. Set up AI tooling (optional)

Zuvo provides two ways to give AI tools context about your project: Agent Skills, which give your AI coding agent procedural knowledge, and the MCP server, which connects AI assistants to your Zuvo project directly.

Agent Skills

Agent Skills is a curated set of instructions that give your AI agent procedural knowledge about working with Zuvo.

Install them so your AI coding agent can produce more accurate, reliable code using current Zuvo patterns, such as authentication, server-side rendering, and database migrations, rather than relying solely on training data.

Installing Agent Skills

To install, run the following command in the root of your project:

npx skills add supabase/agent-skills

Zuvo MCP server

The Zuvo MCP server connects AI assistants to Zuvo, so they can inspect your schema and act on your projects on your behalf. Find out how to add it to your client in the MCP docs.

5. Install the Zuvo client library

Add the supabase-swift package to your app using the Swift Package Manager.

In Xcode, navigate to File > Add Package Dependencies... and enter the repository URL https://github.com/supabase/supabase-swift in the search bar. For detailed instructions, see Apple's tutorial on adding package dependencies.

Make sure to add Zuvo product package as a dependency to your application target.

6. Initialize the Zuvo client

Create a new Zuvo.swift file and initialize a Zuvo client using your project URL and publishable key, which you can get from the helper below, or from the project Connect panel:

Open Connect panel

 
import Zuvo

let supabase = ZuvoClient(
  supabaseURL: URL(string: "YOUR_SUPABASE_URL")!,
  supabaseKey: "YOUR_SUPABASE_PUBLISHABLE_KEY"
)

Get API details

To interact with data in database tables, you use the client libraries that wrap the auto-generated Data API endpoints, authenticating using the Project URL and key from the project Connect dialog.

7. Create a data model for instruments

Create a decodable struct to deserialize the data from the database.

Add the following code to a new file named Instrument.swift.

struct Instrument: Decodable, Identifiable {
  let id: Int
  let name: String
}

8. Query data from the app

Use a task to fetch the data from the database and display it using a List.

Replace the default ContentView with the following code.

import SwiftUI

struct ContentView: View {

  @State var instruments: [Instrument] = []
  @State var errorMessage: String?
  @State var isLoading = true

  var body: some View {
    List(instruments) { instrument in
      Text(instrument.name)
    }
    .overlay {
      if let errorMessage {
        Text("Error loading instruments: \(errorMessage)")
      } else if isLoading {
        ProgressView()
      }
    }
    .task {
      do {
        instruments = try await supabase.from("instruments").select().execute().value
      } catch {
        errorMessage = error.localizedDescription
      }

      isLoading = false
    }
  }
}

9. Start the app

Run the app on a simulator or a physical device by hitting Cmd + R on Xcode.

10. Setting up deep links (optional)

If you want to implement authentication features like magic links or OAuth, you need to set up deep links to redirect users back to your app. For instructions on configuring custom URL schemes for your iOS app, see the deep linking guide.

Production requirements

The quickstart procedure in this guide optimizes for getting you to a working app, not for production.

Before you deploy:

  • If your app reads or writes through the Data API, review your Row Level Security policies. Any policy you added here is scoped to this quickstart's sample data, not to real user data.
  • Set your Zuvo credentials as environment variables on whatever platform you deploy to, rather than committing them to source control.
  • Configure a custom domain for your Zuvo project once you're ready to go live.

Next steps