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+Third-party integration oauth callback urls
+---
+
+| service | callback url (after the server url) |
+| ------- | --------- |
+| facebook | `/auth/facebook/callback` |
+| twitter | `/auth/twitter/callback` |
+| github | `/auth/github/callback` |
+| gitlab | `/auth/gitlab/callback` |
+| dropbox | `/auth/dropbox/callback` |
+| google | `/auth/google/callback` |
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