CLI
Monitor any MCP server with the Spanly CLI, no code changes required.
The Spanly CLI instruments MCP servers written in any language. Run your
server under spanly run, or sit spanly proxy in front of a remote
server, and every JSON-RPC packet streams to your dashboard. Nothing in
your server code changes.
npx -y @spanly/spanly run -- <your-mcp-command># 1. Set your API key (region auto-detected from the prefix)export SPANLY_API_KEY=spanly_us_xxxxxxxxxxxx# 2. Wrap your MCP server. stdio:npx -y @spanly/spanly run -- node ./server.js# Or HTTP. The wrapper takes your port; the child gets a random one:npx -y @spanly/spanly run --port 3000 -- node ./server.jsIn this section
- Installation covers npm, Homebrew, and the
curl | shinstaller. spanly runwraps a server you launch yourself.spanly proxysits in front of a server you connect to.- Flags lists every option for both commands.
- Production covers running the CLI in a deployed environment.