MCP SSE Proxy Server MCP Server

Start any MCP Server remotely using the MCP standard protocol.

Local serverstdioPython

What is the MCP SSE Proxy Server MCP server?

Most developer tooling work still happens through a UI a human drives. MCP SSE Proxy Server MCP server moves it into the conversation instead. Start any MCP Server remotely using the MCP standard protocol.

The short version

The MCP SSE Proxy Server is a Server-Sent Events (SSE) based Model Context Protocol (MCP) proxy server that enables remote execution of MCP servers using the standard MCP protocol. It supports both shared and independent session modes.

  • SSE long connection support for server push
  • JSON-RPC 2.0 message format support
  • Both shared and independent session modes
  • Dynamic session environment configuration via request parameters
  • Automatic connection keep-alive (30-second heartbeat)
  • Complete error handling and logging

What it needs from you

Configuration is passed through the environment: MCP_SERVER_CONFIG, AUTH_KEY, SHARED_SESSION, GITHUB_PERSONAL_ACCESS_TOKEN. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.

Getting it running

The server ships on npm as and, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.

How it compares

This sits in the developer tooling group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. It is maintained by jinyalong; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.

Things to watch

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • Missing credentials fail quietly in some clients — if no tools show up, check the environment block first.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

How to install the MCP SSE Proxy Server MCP server

{
  "mcpServers": {
    "server-name": {
      "url": "http://your-server:8000/sse?auth_key=your_auth_key",
      "env": {
      }
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Configuration

VariableDescriptionRequired
MCP_SERVER_CONFIGConfiguration value read at startup.Optional
AUTH_KEYCredential the server authenticates with.Yes
SHARED_SESSIONConfiguration value read at startup.Optional
GITHUB_PERSONAL_ACCESS_TOKENCredential the server authenticates with.Yes

Frequently asked questions

The server supports two modes controlled by `SHARED_SESSION`: shared mode (default, all clients share one MCP session) and independent mode (each client creates a separate MCP session).