Supergateway

Supergateway is an open-source utility that connects MCP clients and servers using different message transports. It runs via npx or Docker without requiring changes to the original MCP server.

It can expose a local stdio server as a network service and bridge remote SSE or Streamable HTTP endpoints back to local clients. Configuration options include listening addresses, ports, headers, and transport modes.

It is useful when a local-process MCP server must be reached by a remote client or containerized deployment. The project also documents access keys and tool filtering for selected configurations.

The software is open source and has no separate subscription price. Exposing a server on a network still requires careful binding, authentication, and secret management.