Run untrusted code with Vercel Sandbox, now generally available

Vercel Sandbox is now generally available as the execution layer for agents, with the CLI and SDK open-sourced. It leverages Vercel's internal compute platform (Hive) powered by Firecracker microVMs for isolated, ephemeral, and fast-starting environments. Key features include sub-second starts, full isolation, ephemeral operation, snapshotting for instant environment restoration, and Fluid compute with Active CPU pricing. Teams like Roo Code and Blackbox AI are using Sandbox for AI agent development, enabling end-to-end testing, persistent collaboration via snapshots, and scalable, isolated execution of AI tasks.