MCP Proxy

Name: MCP Proxy
Author: punkpeye

@punkpeye

代码仓库

关于 MCP Proxy

A TypeScript streamable HTTP and SSE proxy for MCP servers that use stdio transport.

基本信息

分类

其他

许可证

MIT

运行时

node

传输方式

stdio

发布者

punkpeye

配置

使用下面的配置,将此服务器添加到你的 MCP 客户端。

{
  "mcpServers": {
    "mcp-proxy-punkpeye": {
      "command": "npx",
      "args": [
        "mcp-proxy",
        "npx",
        "-y",
        "@anthropic/mcp-server-filesystem",
        "/path"
      ]
    }
  }
}

工具

未检测到工具

工具是从 README 中自动提取的。维护者可以在 ## Tools 标题下列出工具,即可填充这部分内容。

概览

What is MCP Proxy?

MCP Proxy is a TypeScript streamable HTTP and SSE proxy for MCP servers that use stdio transport. It enables remote access to local stdio-based MCP servers over HTTP or SSE, intended for developers who need to expose such servers.

How to use MCP Proxy?

Install via npm install mcp-proxy and run from the command line with npx mcp-proxy followed by the stdio server command. Options include --port, --apiKey, --tunnel, and transport selection. Programmatic use is available via startHTTPServer from the Node.js SDK.

Key features of MCP Proxy

Streamable HTTP and SSE transport for stdio MCP servers
CORS enabled by default with configurable options
Optional API key authentication
Public tunnel support for exposing local servers
Stateless mode for serverless deployments
Configurable timeouts and debug logging

Use cases of MCP Proxy

Hosting a stdio MCP server remotely for browser-based clients
Testing MCP servers over HTTP without modifying the server
Sharing a local MCP server via a public tunnel for webhook testing
Deploying MCP servers in serverless environments using stateless mode

FAQ from MCP Proxy

Does MCP Proxy require changes to the stdio server?

No, it works with any stdio-based MCP server without modifications. The proxy handles the protocol translation.

What transport protocols does MCP Proxy support?

It supports both streamable HTTP (default endpoint /mcp) and SSE (default endpoint /sse). Both are enabled by default but can be toggled individually.

How do I enable authentication?

Pass --apiKey "your-secret-key" on the command line or set the MCP_PROXY_API_KEY environment variable. Clients must then include the X-API-Key header.

Can I use MCP Proxy with Python MCP servers?

Yes, but ensure Python is run in unbuffered mode (e.g., python -u) or set PYTHONUNBUFFERED=1 to prevent timeouts.

How does stateless mode differ from the default?

Default mode maintains persistent sessions per client. Stateless mode (--stateless) creates a new server instance per request, useful for serverless or memory-constrained environments.

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