Enter a stdio command or sse/streamable url of a mcp server, view the tools, prompts...
npx -y @supabase/mcp-server-supabase@latest --read-only --project-ref=<project-ref>Error: [GET] "https://cdn12.mcphub.in/api/sandbox/exec?inputText=npx+-y+@supabase%2Fmcp-server-supabase@latest+--read-only+--project-ref=%3Cproject-ref%3E&type=stdio": 401 Unauthorized