Anthropic Ships Self-Hosted Sandboxes (Public Beta) and MCP Tunnels (Research Preview) at Code with Claude London

The New Stack·medium signal

Self-hosted sandboxes let enterprises run Claude agent tool calls on their own infrastructure or through managed providers (Cloudflare, Daytona, Modal, Vercel), while MCP tunnels connect agents to private-network MCP servers via a single encrypted outbound connection — no inbound firewall rules or public endpoints. Both address the root blocker for regulated industries: tool execution and private data access happening outside the enterprise security perimeter. Sandboxes are public beta; tunnels require access request.