location /mcp/ws {
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection 'upgrade';
    set $mcp_ws_backend $PENPOT_MCP_URI_WS;
    proxy_pass $mcp_ws_backend;
    proxy_http_version 1.1;
}

location /mcp/stream {
    set $mcp_stream_backend $PENPOT_MCP_URI/mcp$is_args$args;
    proxy_pass $mcp_stream_backend;
    proxy_http_version 1.1;
}

location /mcp/sse {
    set $mcp_sse_backend $PENPOT_MCP_URI/sse$is_args$args;
    proxy_pass $mcp_sse_backend;
    proxy_http_version 1.1;
}