Claude launches self-hosted sandboxes and MCP tunnels

Claude推出自托管沙箱与MCP隧道功能

Claude launched self-hosted sandboxes in public beta and MCP tunnels in research preview for Claude Managed Agents, letting agents run inside a user’s own security boundary with the user’s security controls applied by default.

Why it matters: HKR-H/K/R all pass: this is an official Claude agent-infra update with concrete self-hosted sandbox and MCP tunnel mechanisms, tied to enterprise security boundaries. It is beta/preview scope, not a model release, so it stays in the 78–84 band.