Cannot connect to cloud agent or pass agent to cloud

Support Bug Reports
1

Hi all,

In Cursor 3 I cannot pass my agent to the cloud, and when I try to set up an env or a cloud agent, select a github Repo and click “Start for free” the site just says “Error”

This is visible in the network tab:

Request URL

https://cursor.com/api/auth/startBackgroundComposerFromSnapshot

Request Method

POST

Status Code

404 Not Found

Any ideas?

Thank you

Thomas

5

Hi Thomas,

There are likely two separate issues here:

1. “Start for free” on cursor.com returns 404

This is a known issue where cloud agent creation fails if the selected GitHub repo’s default branch is not named main. Could you check what your repo’s default branch is called? If it’s something like master, develop, or trunk, that would explain the 404.

This is being tracked by our team. As a temporary workaround, if you have another repo with main as the default branch, you could try that to confirm.

2. “Cannot pass agent to cloud” from the IDE

This was a confirmed bug in Cursor 3 that was fixed in version 3.0.13. Could you check your Cursor version (Help > About) and update if you’re on an older version? After updating, the “Move to Cloud” button and /cloud command should work. Other users confirmed the fix in this thread.

Let me know your repo’s default branch name and Cursor version, and we can go from there!

6

Thank you, that first issue got resolved

As for 2, I have version 3.0.13 on Mac installed

Thank you

Thomas

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