MCP Simple Gateway

Name: MCP Simple Gateway
Author: denwakeup

@denwakeup

Repository

About MCP Simple Gateway

Simple proxy server for MCP with token-based authentication support.

Basic information

Config

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

{
  "mcpServers": {
    "mcp-simple-gateway": {
      "command": "npx",
      "args": [
        "mcp-simple-gateway",
        "--config",
        "config.json"
      ]
    }
  }
}

Tools

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We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is MCP Simple Gateway?

MCP Simple Gateway is a proxy server for the Model Context Protocol (MCP) that aggregates and manages multiple MCP servers through a single interface. It is intended for developers who need to centralize access to various MCP endpoints.

How to use MCP Simple Gateway?

Run it via CLI with npx mcp-simple-gateway --config config.json, or deploy it using Docker Compose with an image from ghcr.io/denwakeup/mcp-simple-gateway:latest. Configuration is provided as a JSON file that defines the proxy server options and a list of MCP servers to aggregate.

Key features of MCP Simple Gateway

Aggregation of multiple MCP servers
Token-based authentication support
Flexible JSON-based configuration
Docker support
Supports SSE, stdio, and StreamableHTTP MCP transports

Use cases of MCP Simple Gateway

Aggregating multiple MCP servers (e.g., time, filesystem, echo) behind a single proxy
Adding token-based authentication to MCP servers that lack it
Enabling CORS for cross-origin requests to MCP servers
Simplifying client configuration by exposing one endpoint

FAQ from MCP Simple Gateway

What types of MCP servers are supported?

The gateway supports stdio, SSE, and StreamableHTTP MCP servers.

How do I configure authentication?

Provide an array of authentication tokens in the proxyServer.options.authTokens field. These tokens apply to all servers by default, and can be overridden per server via proxyOptions.authTokens.

Can I run MCP Simple Gateway with Docker?

Yes, a Docker Compose example is provided in the README, using the image ghcr.io/denwakeup/mcp-simple-gateway:latest.

What is the default port?

The default proxy server address and port is localhost:3000.

How do I set up CORS?

CORS configuration is optional; you can set proxyServer.options.cors using Express.js CORS middleware options.

Comments

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