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MCP Simple Gateway

@denwakeup

Repository

About MCP Simple Gateway

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

Basic information

Category

Other

License

MIT

Runtime

node

Transports

stdio

Publisher

denwakeup

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

No tools detected

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.

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