Cursor remote MCP login breaks for some HTTP streaming servers
Cursor is failing to connect to some remote that use and OAuth. The same setup worked before, but now adding a remote and logging in still ends with errors after . The same servers connect correctly in other , including Codex and Claude.
Cursor logs show that the connection succeeds at first, then fails because it cannot open the . Cursor detects a ended session and tries to reconnect, but the remote ion still does not become usable.
Key points
- Cursor fails when connecting to remote through and OAuth.
- The same servers still work in other such as Codex and Claude.
- The issue can be reproduced by adding a remote in Cursor and trying to log in.
- Cursor logs show an initial connection success followed by failure to open the .
- Cursor retries after detecting a session end, but the connection still fails.