GitHub Login lets users sign in with their GitHub account. It’s one of the most popular OAuth providers for developer-facing applications.

1. Go to GitHub Settings → Developer settings → OAuth Apps
2. Click “New OAuth App”
3. Fill in:
   • Application name: Your app name
   • Homepage URL: http://localhost:3000
   • Authorization callback URL: http://localhost:3000/api/auth/callback/github
4. Click “Register application”
5. Copy the Client ID and generate a Client Secret

GITHUB_CLIENT_ID=your-github-client-id
GITHUB_CLIENT_SECRET=your-github-client-secret

import GitHubProvider from 'next-auth/providers/github'

export const authOptions = {
  providers: [
    GitHubProvider({
      clientId: process.env.GITHUB_CLIENT_ID!,
      clientSecret: process.env.GITHUB_CLIENT_SECRET!,
    }),
  ],
}

<button onClick={() => signIn('github', { callbackUrl: '/dashboard' })}>
  Sign in with GitHub
</button>

Update the GitHub OAuth app with your production URL:

• Callback URL mismatch — The path must end with /api/auth/callback/github. A trailing slash difference can break the flow.
• Forgetting to update URLs for production — Create separate OAuth apps or use multiple callback URLs.
• Exposing the client secret — Never commit the secret to version control.

• Create separate OAuth apps for development and production
• Use environment variables for all OAuth credentials
• Enable additional OAuth scopes only if needed (e.g., read:user is default)

GitHub Login requires creating an OAuth app in GitHub Developer Settings, adding environment variables, and configuring the GitHub provider in Auth.js. Use separate apps for dev and production.

• Google Login
• Custom Provider
• Auth.js Providers