Enter a stdio command or sse/streamable url of a mcp server, view the tools, prompts...
npx -y mcp-remote https://api.grain.com/_/mcpError: [GET] "https://cdn12.mcphub.in/api/sandbox/exec?inputText=npx+-y+mcp-remote+https:%2F%2Fapi.grain.com%2F_%2Fmcp&type=stdio": 401 Unauthorized