You can now run Claude Managed Agents with Vercel Sandbox.

Claude Managed Agents handles the model, harness, tools, and session state. Self-hosting lets you bring the execution environment, so an agent's tool calls run on your existing Vercel infrastructure with your private APIs, internal services, and customer data.

Each agent session runs in its own isolated Firecracker microVM, using the same infrastructure that powers 1B+ Vercel deployments with enterprise-grade security, availability, and performance.

What you get:

• A managed agent loop from Anthropic, including the model, harness, tools, and session state

• A Vercel function control plane that spawns a sandbox per session

• Firecracker microVM isolation per session, with millisecond startup

• Credential brokering at the firewall, so secrets never enter the sandbox

• Deny-by-default egress with a domain allowlist

• Low-latency connectivity to your private network and cloud workloads

Follow the step-by-step guide for a reference implementation and learn more in the Vercel Sandbox docs.