Cursor-agent cli fails silently, when disk is full

[Dmitry_Mironov]

Where does the bug appear (feature/product)?

Cursor CLI

Describe the Bug

When the / disk is full, cursor-agent cli fails silently, without any error message.

$ cursor-agent
$ cursor-agent -v
2025.12.17-996666f
$ cursor-agent -p "echo test"

The command was rejected. `echo test` prints "test" to stdout.

What would you like to do next?

Steps to Reproduce

1. Fill your / partition. For example
   cat /dev/null > /tmp/very_large_file
2. Try starting cursor-agent Nothing happens.

Operating System

Linux

Current Cursor Version (Menu → About Cursor → Copy)

$ cursor-agent -v
2025.12.17-996666f

Does this stop you from using Cursor

Yes - Cursor is unusable

[deanrie]

Hey, thanks for the report.

cursor-agent should definitely show an error message if it can’t start due to low disk space.

I’ve forwarded this to the engineering team. Thanks for catching this!