Mcp server tool not found（Normal has been restored 03/31 13：52）

Bug Reports
1

Last Friday, I open sourced an MCP server for code review. Last week’s testing and usage were normal. Today morning, I tried again and found that no matter what I did, the cursor error could not find the tool：

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image1918×1237 148 KB

However, using the

npx-y @ modelcontextprotocol/observer node command “dist/mcc_code_deview. js”

locally http://localhost:5173/ can run normally, which is quite strange

The version I am using In windows:
edition: 0.47.8 (user setup)
Submit: 1.96.2
Date: 82ef0f61c01d079d1b7e5ab04d88499d5af500e0
Electron: 2025-03-18T05:39:50.993Z
ElectronBuildId: 32.2.6
Chromium: undefined
Node.js: 128.0.6613.186
V8: 20.18.1
OS: 12.8.374.38-electron.0

2 Likes
2

It’s the recent update

3

Same here. No MCP server works since this morning.

Constantly get “Tool … not found” for every MCP tool use.

4

It seems that many people have encountered it, and it seems that they need to wait for repairs

5

I am also having trouble with the same issue

6

mcp tools were working this morning, but not anymore. Tries executing a strange tool name mcp_supabase_live_dnagerously, for example, where it mashes the toolname with the tools. It tries, but just says Tool … not found

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image502×363 25.5 KB

7

I rolled back to version 0.47.8, but the problem is still the same.

8

same is happening to me on macOS 15.3.2… was working fine yesterday, stopped working today. shows green in my settings but I get tool not found error

9

Yes there is another thread relevant to that with additional updates

10

Oh so its also on older versions? then perhaps cursor server side temporary issue.

11

looks like the service is alive.

12

Hopefully it’s a temporary issue

13

Yes confirmed by several users in different forum threads as working.

14

Thank you, I also tried it quickly and it turned out to be normal