MCP Log Proxy

@emicklei

リポジトリ

基本情報

カテゴリ

開発者ツール

ライセンス

MIT

トランスポート

stdio

作者

emicklei

MCP Log Proxy について

a web logging proxy for MCP client-server communication

#golang #debug #mcp-server #mcp-tools

MCP Log Proxy の設定

標準の設定はありません

このサーバーの README には解析可能な MCP 設定ブロックが含まれていません。インストール手順はリポジトリをご確認ください。

リポジトリ

MCP Log Proxy のツール

ツール一覧はまだありません

この掲載には表示できるツール一覧がまだありません。サーバーにツールがないという意味ではありません。対応機能はプロジェクトのドキュメントをご確認ください。

ツールは README から自動的に抽出されます。メンテナーは ## Tools という見出しの下に記載することで、このタブに反映できます。

概要

What is Mcp Log Proxy?

Mcp Log Proxy is a debugging tool that intercepts and visualizes all messages exchanged between a MCP client and a MCP server through a Web interface. It currently supports only the STDIO transport. It is intended for developers who need to inspect or troubleshoot MCP protocol traffic.

How to use Mcp Log Proxy?

Install via Homebrew (brew tap "emicklei/tap" then brew install emicklei/tap/mcp-log-proxy) or with Go (go install github.com/emicklei/mcp-log-proxy@latest). Run the proxy with the required -command flag, providing the full command line to start the target MCP server (e.g., mcp-log-proxy -command melrose-mcp). Messages are then viewable at http://localhost:5656. Optional flags include -host, -port, -title, and -log.

Key features of Mcp Log Proxy

Visualizes MCP client–server messages in a web UI.
Auto-detects and avoids port conflicts when multiple proxies run.
Registers all running proxy instances in a home‑directory JSON file.
Supports overriding HTTP host, port, web page title, and proxy log file.
Compatible with any STDIO‑based MCP server.

Use cases of Mcp Log Proxy

Debugging MCP protocol traffic during development.
Monitoring messages between a client (e.g., Claude) and a custom MCP server.
Troubleshooting integration issues with multiple MCP servers simultaneously.
Inspecting error information that appears in the log proxy’s web view.

よくある質問

What transport does Mcp Log Proxy support?

It currently only supports the STDIO interface for proxying MCP messages.

How do I install Mcp Log Proxy?

Install via Homebrew (`brew tap "emicklei/tap"` then `brew install emicklei/tap/mcp-log-proxy`) or with Go (`go install github.com/emicklei/mcp-log-proxy@latest`).

How do I view the proxied messages?

After starting the proxy, open a browser to `http://localhost:5656` (or the configured host and port) to see the web log view.

Can I run multiple Mcp Log Proxy instances at the same time?

Yes. Each instance registers itself in `.mcp-log-proxy-instances.json` in your home directory. The web page includes a selector to switch between running proxies, and the proxy automatically chooses an available port if the default is taken.

Where does Mcp Log Proxy store its instance registration?

In the file `.mcp-log-proxy-instances.json` located in your home directory.

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