MCP response not visible starting with V1.6

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

The result for MCP calls was removed with version 1.6. Rolling back to version 1.5.x restores the results. LLM can still see the results, but not the user.
Was this done on purpose or by mistake?

Steps to Reproduce

call any mcp tool

Screenshots / Screen Recordings

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.6.6 (system setup)
VSCode Version: 1.99.3
Commit: 9455eaa4c87f2bad91eda3f2bc9b42b16eae1080
Date: 2025-09-11T01:16:54.096Z
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Windows_NT x64 10.0.26100

For AI issues: which model did you use?

all

Does this stop you from using Cursor

Yes - Cursor is unusable

Hey, thanks for the report. Could you let me know which MCP server you’re using?

I’m creating my own MCP servers. Any hint to overcome it from MCP Server side is highly appreciated.

2 Likes

Thanks for the additional info, we’ll look into it.

1 Like

I mentioned this in another bug report a while back, but the MCP tool also does not report success or failure well. It seems ALL responses are always classified the same, and the MCP reports a green checkmark, even when the response was an error, timed out, or otherwise failed. If you guys are going to be in there fixing the MCP tools, might be a good time to try and fix it so that it handles responses and infra issues better, and reports to the user in a more meaningful and useful manner.

1 Like

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I’ve noticed that recently the mcp tool usage does not show the response , im trying to test my tools but they basically jus show the input of the tool call , any idea how to fix it?

Steps to Reproduce

just use any mcp tool

Expected Behavior

should see the input parameters and the response

Screenshots / Screen Recordings

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.6.14 (user setup)
VSCode Version: 1.99.3
Commit: 64b72c9cd7e38203078327f881d5fe74930b2600
Date: 2025-09-11T21:41:40.820Z
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Windows_NT x64 10.0.26100

For AI issues: which model did you use?

any

Does this stop you from using Cursor

No - Cursor works, but with this issue