Cursor auto mode unable to pass newline in MCP tool parameter

Support Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

When using Cursor Auto mode with Rube MCP (https://rube.app), it is unable to create tool parameters correctly. Specifically for parameter code_to_execute that takes a specific code to run inside the MCP, auto mode doesn’t pass newlines correctly in the parameter - \n gets rendered as n.
This works correctly with claude 4 sonnet or other models

Steps to Reproduce

install rube from https://rube.app/ and ask cursor “get current time using rube workbench” in Auto mode.
This bug will likely happen with any MCP parameter that takes text input containing newlines

Expected Behavior

code parameter should correctly pass newlines

Screenshots / Screen Recordings

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.4.4 (Universal)
VSCode Version: 1.99.3
Commit: dd05130a0bf8d5f1a5372e6e6bb7c4184786eaa0
Date: 2025-08-10T22:39:50.197Z
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Darwin arm64 24.6.0

Additional Information

What model does Auto mode use these days?

Does this stop you from using Cursor

Yes - Cursor is unusable

2

Thanks for reporting this.

To help our engineering team investigate:

• Please share a Request ID from a failing auto mode interaction (Chat sidebar menu → Copy Request ID)

I’ve flagged it to the team internally too.

3

Hi here’s the request id ceee0543-b1e8-4beb-a92c-26a09503142f

4

Hi is there an update on this issue?

5

This topic was automatically closed 22 days after the last reply. New replies are no longer allowed.

6

@Dhawal_Upadhyay This was fixed in an earlier version around 2 weeks ago, please let me know if you still see this issue