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MCP Http Proxy

@spontaneous-order

リポジトリ

基本情報

カテゴリ

開発者ツール

ライセンス

BSD-3-Clause license

トランスポート

stdio

作者

spontaneous-order

MCP Http Proxy について

An HTTP/SSE proxy server for Model Context Protocol (MCP) applications using stdio. Supports raw JSON-RPC commands via HTTP and implements direct stdio communication without an MCP SDK.

#mcp-http-proxy#http-proxy#json-rpc

MCP Http Proxy の設定

以下の設定を使って、このサーバーを MCP 対応クライアントに追加してください。

{
  "mcpServers": {
    "mcp-http-proxy": {
      "command": "node",
      "args": [
        "rpc-proxy-worker.js"
      ]
    }
  }
}

MCP Http 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-http-proxy?

mcp-http-proxy is an HTTP/SSE intermediary proxy server that manages a stdio-based MCP (Model Context Protocol) server process and exposes its tools and resources over standard HTTP and Server-Sent Events. It is designed for developers and applications that need to interact with MCP processes without handling stdio directly.

How to use mcp-http-proxy?

Run the script rpc-proxy-worker.js with Node.js (no additional install steps besides having Node.js). The server starts on port 3005 by default, serving a web dashboard at http://localhost:3005. Clients interact via HTTP endpoints (e.g., GET /tool/:toolName, POST /rpc/raw/command) or by connecting to the SSE endpoint at /sse.

Key features of mcp-http-proxy

  • Manages the lifecycle of a child MCP server process.
  • Provides HTTP endpoints for tools and raw JSON-RPC commands.
  • Delivers real-time events via Server-Sent Events (SSE).
  • Includes a web dashboard for tool discovery and debugging.
  • Translates URL query parameters into JSON-RPC tools/call requests.
  • Supports multiple client types (curl, browser, scripts).
  • Handles parameter validation and error relay.
  • Provides debugging endpoints for raw message history and logs.

Use cases of mcp-http-proxy

  • Expose a local stdio-only MCP server to web applications via HTTP.
  • Allow multiple HTTP clients to share a single managed MCP process.
  • Enable programmatic interaction with MCP tools using standard REST/SSE.
  • Debug and test MCP server responses without writing a custom client.

よくある質問

1

What runtime does mcp-http-proxy require?

The proxy runs on Node.js. No other runtime dependencies are mentioned; the MCP server it manages is expected to be a separate process.

2

How do clients communicate with the MCP server through the proxy?

Clients send HTTP requests to endpoints like `/rpc/raw/command` (raw JSON-RPC) or `/tool/:toolName` (URL parameter style). The proxy forwards these as JSON-RPC commands to the child MCP process via stdin, and returns the response from stdout. Asynchronous events are pushed over SSE.

3

What endpoints does mcp-http-proxy provide?

The main endpoints are: `GET /` (dashboard), `GET /tools`, `GET /tool/:toolName`, `POST /rpc/raw/command`, `GET /sse`, `GET /help`, and several debugging endpoints (`/rpc/command`, `/rpc/raw`, `/debug`).

4

How does the proxy handle errors?

It returns HTTP status codes (e.g., 404 for unknown tools, 400 for invalid parameters) and validates parameters for `/tool/:toolName`. Errors from the MCP process are relayed back in HTTP responses or pushed via SSE.

5

Does mcp-http-proxy support authentication?

The README does not mention any authentication mechanism. The proxy is designed for local or trusted network use.

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