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Login with Notion

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


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


Access your Notion account

  • Go to
  • Click on Login at the top right to log in.

Find your callback URL

In the next step you require a callback URL, which looks like this:


  • Go to your Supabase Project Dashboard.
  • Click on the Settings icon at the bottom of the left sidebar.
  • Click on API in the list.
  • Under Config / URL you'll find your API URL, you can click Copy to copy it to the clipboard.
  • Now just add /auth/v1/callback to the end of that to get your full OAuth Redirect URI.

Create a Notion Application

  • Click on New integration in the center of the screen.
  • Enter the name of your application and click Submit.

Add your Notion credentials into your Supabase Project

  • Go to your Supabase Project Dashboard
  • In the left sidebar, click the Authentication icon (near the top)
  • Click Settings from the list to go to the Authentication Settings page
  • Enter the final (hosted) URL of your app under Site URL (this is important)
  • Under External OAuth Providers turn Notion Enabled to ON
  • Enter your Internal Integration Token saved in the previous step
  • Click Save

Add login code to your client app

The JavaScript client code is documented here: Supabase OAuth Client Code

const { user, session, error } = await supabase.auth.signIn({
provider: 'notion',

Add this function which you can call from a button, link, or UI element.

async function signInWithNotion() {
const { user, session, error } = await supabase.auth.signIn({
provider: 'notion',

To log out:

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