xint-oauth-callback-port-3333-not-8477
xint auth setup spawns its local PKCE callback server on port 3333, not the commonly documented 8477. The X Developer Portal app’s Callback URI must be set to http://127.0.0.1:3333/callback or the OAuth redirect will fail with a callback URL mismatch error. Configuring 8477 in the portal causes a silent redirect failure.
Related
- xint-oauth-callback-port-mismatch-8477-vs-3333
- xint-oauth-pkce-callback-server-binds-to-port-3333-not-8477
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