šŸ“„ next-auth/v3/providers/fusionauth

File: fusionauth.md | Updated: 11/15/2025

Source: https://next-auth.js.org/v3/providers/fusionauth

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šŸŽ‰ NextAuth.js is now part of Better Auth !

This is documentation for NextAuth.js v3, which is no longer actively maintained.

For up-to-date documentation, see the **latest version ** (v4).

Version: v3

On this page

Documentation​


https://fusionauth.io/docs/v1/tech/oauth/

Options​


The FusionAuth Provider comes with a set of default options:

You can override any of the options to suit your own use case.

Example​


import Providers from `next-auth/providers`...providers: [  Providers.FusionAuth({    id: "fusionauth",    name: "FusionAuth",    domain:  process.env.FUSIONAUTH_DOMAIN,    clientId: process.env.FUSIONAUTH_CLIENT_ID,    clientSecret: process.env.FUSIONAUTH_SECRET,    tenantId: process.env.FUSIONAUTH_TENANT_ID // Only required if you're using multi-tenancy  }),]...

danger

If you're using multi-tenancy, you need to pass in the tenantId option to apply the proper theme.

Instructions​


Configuration​

tip

An application can be created at https://your-fusionauth-server-url/admin/application.

For more information, follow the FusionAuth 5-minute setup guide .

In the OAuth settings for your application, configure the following.