Login with Twitch

To enable Twitch Auth for your project, you need to set up a Twitch Application and add the Application OAuth credentials to your Supabase Dashboard.

Overview#

Setting up Twitch logins for your application consists of 3 parts:

Go to dev.twitch.tv.
Click on Log in with Twitch at the top right to log in.
If you have not already enabled 2-Factor Authentication for your Twitch Account, you will need to do that at Twitch Security Settings before you can continue.

The next step requires a callback URL, which looks like this: https://<project-ref>.supabase.co/auth/v1/callback

Go to your Supabase Project Dashboard
Click on the Authentication icon in the left sidebar
Click on Providers under the Configuration section
Click on Twitch from the accordion list to expand and you'll find your Redirect URL, you can click Copy to copy it to the clipboard

Enter the name of your application.
Type or paste your OAuth Redirect URL (the callback URL from the previous step.)
Select a category for your app.
Check the Captcha box and click Create.

Go to your Supabase Project Dashboard
In the left sidebar, click the Authentication icon (near the top)
Click on Providers under the Configuration section
Click on Twitch from the accordion list to expand and turn Twitch Enabled to ON
Enter your Twitch Client ID and Twitch Client Secret saved in the previous step
Click Save

When your user signs in, call signInWithOAuth() with twitch as the provider:

async function signInWithTwitch() {
  const { data, error } = await supabase.auth.signInWithOAuth({
    provider: 'twitch',
  })
}

When your user signs out, call signOut() to remove them from the browser session and any objects from localStorage:

async function signout() {
  const { error } = await supabase.auth.signOut()
}