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This is an internal endpoint used by authentication flows. It completes the Supabase OAuth or magic link flow and redirects the user. Clients do not call this endpoint directly.
  • Endpoint: GET /auth/callback
  • File Location: src/app/auth/callback/route.ts

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Query parameters

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code
string
OAuth authorization code from the provider. When present, the server exchanges it for a session.
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token_hash
string
Supabase email/magic link token hash used with type to verify email OTP flows.
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type
string
Auth flow type. Common values: signup, email, recovery.
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next
string
Relative path to redirect after successful auth. Non-relative values are ignored to prevent open redirects. Defaults to /dashboard.

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Behavior

  • When code exists (OAuth):
    • Exchanges code for a session.
    • If type=recovery: redirects to /reset-password.
    • If type=signup: redirects to /dashboard.
    • Otherwise: redirects to next (if relative) or /dashboard.
  • When token_hash and type exist (email/magic link):
    • Verifies OTP with the given type.
    • If type=recovery: redirects to /reset-password.
    • If type=signup or type=email: redirects to /dashboard.
    • Otherwise: redirects to next (if relative) or /dashboard.
  • On failure: redirects to /sign-in?error=auth_failed.
The next parameter only accepts relative paths. External URLs are sanitized to avoid open redirects.

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Examples

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Example Request (OAuth code)

curl -I 'http://localhost:3000/auth/callback?code=abc123&type=signup&next=/dashboard'

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Example Response

HTTP/1.1 302 Found
Location: /dashboard

curl -I 'http://localhost:3000/auth/callback?token_hash=xyz&type=recovery'

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Example Response

HTTP/1.1 302 Found
Location: /reset-password
See Authentication for full flow diagrams, UI routes, and server action usage.