The self-host sandbox is not a performance upgrade — it is a deployment architecture change. Claude Managed Agent's public beta allows tool execution to run on the customer's own infrastructure or on Cloudflare, Modal, or Vercel, with private internal MCP server connectivity included . That last detail is the operative one: MCP server access without external data routing means the models can interact with internal systems — databases, APIs, proprietary tooling — without those systems ever being exposed to Anthropic's infrastructure.
The architecture choice — supporting three major serverless deployment targets out of the gate — reflects a vendor that has already decided where enterprise AI workloads are running. Engineers working through