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AnthropicAnthropic/Claude Platform

MCP tunnels research preview, self-hosted sandboxes, and Claude Managed Agents improvements (May 19, 2026)

May 19, 2026Claude PlatformView original ↗
  • MCP tunnels is now available as a research preview, so you can connect to MCP servers in your private network.
  • Self-hosted sandboxes are now available for Claude Managed Agents, as an alternative to running tool execution in Anthropic's infrastructure.
  • With Claude Managed Agents, you can now update the agent's MCP server and tool configurations associated with an active session.
  • With Claude Managed Agents, large outputs from agent_toolset and MCP tools exceeding 100K tokens are now automatically spilled to a file in the sandbox. The model receives a truncated preview with the file path and can read the full content from there.

Fetched June 20, 2026