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Auth0 Integration

The Auth0 Integration adds user sign-in with your Auth0 tenant, including its social, passwordless, and enterprise connections to your app over OpenID Connect (OIDC). Reflex Build wires the app with the Reflex Enterprise auth plugin, so pages, events, and state can require a signed-in user, and the login button reads "Continue with Auth0".

Step 1: Copy Your Redirect URIs

  1. In Reflex Build, open the Integrations tab and select the Auth0 card.
  2. Click Add connection. The form lists the sign-in redirect URIs to register with Auth0: the app's preview URL followed by /callback, plus one for each address the app is deployed to.

Keep the form open; you will fill it in after the next step.

Step 2: Create an Auth0 Application

  1. In the Auth0 Dashboard, go to Applications → Applications and click Create Application.
  2. Choose Regular Web Applications and create it.
  3. On the Settings tab, under Application URIs, add each redirect URI from Step 1 to Allowed Callback URLs (comma-separated) and save.
  4. Under Basic Information on the same tab, copy the Domain, Client ID, and Client Secret.

Step 3: Connect in Reflex Build

Fill in the form you opened in Step 1:

  • OIDC_ISSUER_URI: https://<your-domain>/, using the Domain from Step 2. Enter it exactly as the issuer value in https://<your-domain>/.well-known/openid-configuration, which for Auth0 ends with a slash.
  • OIDC_CLIENT_ID: the client ID from Step 2.
  • OIDC_CLIENT_SECRET: the client secret from Step 2.
  • OIDC_EXTRA_SCOPES (optional): extra scopes to request, separated by spaces. offline_access keeps users signed in after their access token expires, up to the 7-day session limit, once Refresh Token is enabled under the application's Advanced Settings → Grant Types. Auth0 has no groups scope: add group membership as a custom claim with an Auth0 Action instead.

Click Connect. Reflex Build fetches the issuer's discovery document (/.well-known/openid-configuration) and refuses an issuer URL that does not serve one.

Notes

  • Register every redirect URI exactly: a missing or mistyped URI fails at login with redirect_uri_mismatch. The preview URL changes when the sandbox is recreated, so register the new one if sign-in stops working. After you deploy, also register https://<your-app-domain>/callback.
  • Scopes: the application must be allowed to request the openid, profile, and email scopes.
  • Session length: signed-in sessions last up to 7 days, then users sign in again, whatever your provider's token settings.