github / github/copilot-cli

Copilot CLI failed to connect to mcp server

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#2,435 0 comments 1 reaction 0 assignees View on GitHub
area:mcp
Dominant language
Shell
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Avg merge
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Description

### Describe the bug

On starting copilot cli (just by running `copilot` int the vscode terminal) I see a failed to connect to server message. Below is a screenshot of the log and output from the `\mcp show nuget` command.
Image

### Affected version

GitHub Copilot CLI 1.0.15-0

### Steps to reproduce the behavior

N/A

### Expected behavior

Expect it to connect it server successfully.

### Additional context

_No response_

Contributor guide

Open the contributing guide

Research direction

The report names GitHub Copilot CLI 1.0.15-0, the VS Code terminal, and `\mcp show nuget`, but no source files or tests. Start by reproducing with `copilot` in the VS Code terminal and inspect the attached connection log; done when the MCP server connects successfully.

Written by the indexing model from the issue text.

Assessment

Tech stack
shell, vscode
Domain
cli
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
30/100

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