[BUG] cursor <-> claude code integration does not work from inside tmux

[ramarnat]

Environment

• Platform (select one):
  • [x] Anthropic API
  • [ ] AWS Bedrock
  • [ ] Google Vertex AI
  • [ ] Other:
• Claude CLI version: 1.0.1
• Operating System: macOS 15.4
• Terminal: Ghosttty + tmux

Bug Description

claude code running inside tmux wont see a running cursor instance when running /ide. I also have tmux auto start in cursor terminals, and that does not recognize that it is running inside cursor

Steps to Reproduce

1. Run cursor
2. start a tmux session
3. run claude
4. /ide Shows no available ides

Expected Behavior

Show running cursor. This works if I am not inside tmux

[blois]

Exporting TERM_PROGRAM=cursor should make it pick up that it's in Cursor. cursor will also need to be in the path for it to work

[ramarnat]

Just tried it, didnt work.

➜  claude
╭───────────────────────────────────────────╮
│ ✻ Welcome to Claude Code!                                          
│                                                                    
│   /help for help, /status for your current setup                   
│                                                                    
│   cwd: /Volumes/devel/omniarcs/github.com/locusai/ike-base-replit  
╰───────────────────────────────────────────╯


> /ide
  ⎿  (no content)

! echo $TERM_PROGRAM
  ⎿  cursor

╭───────────────────────────────────────────╮
│                                                                      
│  Select IDE                                                          
│  Connect to an IDE for integrated development features.              
│                                                                      
│  No available IDEs detected. Make sure your IDE has the Claude Code  
│   extension or plugin installed and is running.                      
│                                                                      
╰───────────────────────────────────────────╯
 Esc to exit

(cursor is in the path)

[blois]

Ah, ok. I'm seeing an error:

! cursor --list-extensions
  ⎿  Unable to connect to VS Code server: Error in request.
     Error: connect ENOENT /tmp/vscode-ipc-13b05293-93fa-4a98-8a0d-d62186acfa94.sock

[ramarnat]

I do see the extensions in my setup

! cursor --list-extensions
  ⎿  akamud.vscode-theme-onelight
     anthropic.claude-code
     … +22 lines (ctrl+r to expand)

> /ide
  ⎿  (no content)

╭──────────────────────────────────────────────────────
│                                                                                                                                                                                      │
│  Select IDE                                                                                                                                                                          │
│  Connect to an IDE for integrated development features.                                                                                                                              │
│                                                                                                                                                                                      │
│  No available IDEs detected. Make sure your IDE has the Claude Code extension or plugin installed and is running.                                                                    │
│                                                                                                                                                                                      │
╰──────────────────────────────────────────────────────
 Esc to exit

[skoonin]

just adding on here that I am seeing similar issues in vs code insiders, vs code release version works fine. export TERM_PROGRAM=code-insiders does solve the issue though.

Update: this stopped working for some reason, not sure why.

[univers3]

Same here

[igorkofman]

@ramarnat - are you running tmux in ghostty or in cursor's terminal? you have to run it in cursor terminal (without tmux) at least once to install. After that it should work.

[igorkofman]

For folks for who it stopped working we should have a fix today.

[ramarnat]

woot! Seems to be working now.

This is in the cursor ide terminal

[fses91]

I still have the issue, its working in normal terminal but not in tmux session the it does not find the ide.

[tete1030]

It seems from the latest claude-code version 1.0.56, this suddenly doesn't work. It was working yesterday (or maybe two days ago)

[MrLeoCode]

cc version 1.0.62 -> Same issue is back

[github-actions[bot]]

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.