Web Search tool - [github-mcp-server] error

[hellopahe]

Describe the bug

agent meet error when execute Web Search tools,

✗ Web Search (MCP: github-mcp-server) · Search Reddit for discussions mentioning "AI agent". Summarize common topics, notable thread…
  └ MCP server 'github-mcp-server': Error: Streamable HTTP error: Error POSTing to endpoint: [HTML error page omitted]

Affected version

1.0.25

Steps to reproduce the behavior

prompt copilot in interactive mode with this is a test, try to run web search for AI AGENT on reddit.

Expected behavior

No response

Additional context

No response

[quintindk]

Same issue experienced since 4/13/26

[hellopahe]

Same issue experienced since 4/13/26

@quintindk hey have you tried previous versions of cli?

[LelouchHe]

It has been failing since yesterday, though it was somehow recovered a few times for a short period.

and it sometimes has a different error message on my machine:

"Azure AI Agent request failed"

other github mcp tools are good, except this and web fetch tools for some sites. not stable

same on version 1.0.22 and latest 1.0.26

[hellopahe]

Seems like ok after update, web search has been ok with mine, how is it like on your side? @LelouchHe @quintindk