Integrating GitHub OAuth Next.js involves several steps, including setting up a GitHub OAuth app, configuring environment variables, and using a library like next-auth to handle authentication in your Next.js application.

What are the steps?

1. Registration of your GitHub oauth app

2. Request for User Authentication for GitHub oauth integration.

3. Github oauth token exchange to authorise the user.

4. GitHub will get back to you with access token for single sign on.

Here’s a detailed guide on how to achieve this:

https://www.codegirl0101.dev/2024/06/how-to-add-github-oauth-with-nextauthjs.html