Supergateway runs a stdio-based MCP server over SSE (Server-Sent Events) with one command. This is useful for remote access, debugging, or connecting to SSE-based clients when your MCP server only speaks stdio.
Model Context Protocol standardizes how AI tools exchange data. If your MCP server only speaks stdio, Supergateway exposes an SSE-based interface so remote clients (and tools like MCP Inspector) can connect without extra server changes.