MCP Simple Gateway
@denwakeup
About MCP Simple Gateway
Simple proxy server for MCP with token-based authentication support.
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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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.
Frequently asked questions
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.
Basic information
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