Anthropic's MCP tunnels and self-hosted sandboxes: keeping agents inside your perimeter (opens in new tab)

Anthropic has quietly shipped two new infrastructure features for Claude agents: MCP tunnels and self-hosted sandboxes. Neither is about making Claude smarter. Both are about making it safe to deploy inside a real enterprise security perimeter. They solve different problems. You might need one, the other, or both. What actually changed MCP tunnels let Claude connect to MCP servers running in your private network — without opening inbound firewall ports or exposing services to the public inter...