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claude-code - 💡(How to fix) Fix [BUG] MCP server configuration bug [1 comments, 2 participants]

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anthropics/claude-code#54970•Fetched 2026-05-01 05:49:40
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Error Message

Error Messages/Logs

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Preflight Checklist

  • I have searched existing issues and this hasn't been reported yet
  • This is a single bug report (please file separate reports for different bugs)
  • I am using the latest version of Claude Code

What's Wrong?

  • MCP server 配置正确（HTTP 类型），URL 可达（curl 返回 405）
  • 但会话中工具始终报 No such tool available，MCP 工具未被加载
  • 重启会话前工具正常工作过突然断连

What Should Happen?

  • MCP server 配置正确（HTTP 类型），URL 可达（curl 返回 405）
  • 但会话中工具始终报 No such tool available，MCP 工具未被加载
  • 重启会话前工具正常工作过突然断连

Error Messages/Logs

Steps to Reproduce

  • MCP server 配置正确（HTTP 类型），URL 可达（curl 返回 405）
  • 但会话中工具始终报 No such tool available，MCP 工具未被加载
  • 重启会话前工具正常工作过突然断连

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

v2.1.104、 v2.1.123

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

No response

extent analysis

TL;DR

The issue might be resolved by re-configuring the MCP server or checking the tool loading mechanism in the Claude Code version.

Guidance

  • Verify the MCP server configuration to ensure it is correctly set up for HTTP type and the URL is reachable.
  • Check the tool loading mechanism in the Claude Code to see if there are any issues with loading the MCP tools.
  • Investigate the difference in behavior between the current version (v2.1.104, v2.1.123) and the previous version where the issue did not occur.
  • Test the MCP server with a different tool or configuration to isolate the issue.

Notes

The issue seems to be related to the MCP server configuration or the tool loading mechanism in the Claude Code. However, without more information about the previous working version and the exact changes made, it's difficult to provide a more specific solution.

Recommendation

Apply workaround: Re-configure the MCP server and check the tool loading mechanism, as the issue seems to be related to these components.

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#api#model compatibility#GPU setup#container setup#orchestration issue

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