MCP Gateway Go

@zhengkunwang223

Basic information

About MCP Gateway Go

A Go gateway that converts stdio-based MCP servers to SSE endpoints using mcp-go.

MCP Gateway Go config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "mcp-gateway-go": {
      "type": "http",
      "url": "http://localhost:7979/sse"
    }
  }
}

MCP Gateway Go tools

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Overview

What is mcp-gateway-go?

mcp-gateway-go is a lightweight Go-based gateway that transforms a standard input/output (stdio) Model Context Protocol (MCP) server into a Server-Sent Events (SSE) endpoint. This enables real-time communication with clients such as web browsers or AI agents over HTTP.

How to use mcp-gateway-go?

Install the binary with go install github.com/zhengkunwang223/mcp-gateway-go@latest, then run it from the command line using flags such as --port, --baseUrl, and --command to specify the target MCP server. Optional flags like --ssePath, --messagePath, and --oauth2Bearer allow further customisation.

Key features of mcp-gateway-go

Converts stdio MCP servers to SSE endpoints.
Configurable SSE and message paths.
Optional OAuth2 Bearer token authentication.
Lightweight, single Go binary.
Uses standard HTTP for real-time client communication.

Use cases of mcp-gateway-go

Expose a local MCP server to web applications via SSE.
Enable AI agents to communicate with MCP servers over HTTP.
Bridge stdio-based MCP tools to browser-based interfaces.
Add authentication to an MCP server without modifying it.

Frequently asked questions

What is the purpose of mcp-gateway-go?

It acts as a bridge, turning a stdio-only MCP server into an SSE endpoint so that HTTP clients (e.g., web browsers or AI agents) can communicate with it in real time.

How do I install mcp-gateway-go?

Install it via Go: `go install github.com/zhengkunwang223/mcp-gateway-go@latest`.

What command-line flags are supported?

Key flags: `--port` (default 7979), `--baseUrl`, `--command`, `--ssePath` (default "`/sse`"), `--messagePath` (default "`/message`"), and `--oauth2Bearer` for Bearer token authentication.

Does mcp-gateway-go support authentication?

Yes. The `--oauth2Bearer` flag adds an `Authorization` header with the provided Bearer token to outgoing messages.

What runtimes and dependencies are required?

mcp-gateway-go is distributed as a single Go binary; the only requirement is a system that can run the compiled executable. No external runtime or framework is needed.

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