Vercel Sandbox · Managed Images

Sandbox SDK v3 defaults to vercel/sandbox/universal:latest on Ubuntu 26.04 with Node 24, Python 3.14, and preinstalled opencode, claude-code, codex and pi. Old runtime stays as a deprecated alias; Amazon Linux stays only via runtime. Source images live in the public vercel/sandbox repo.¹¹

Relevant to: anyone spinning agent sandboxes on Vercel who was baking tools at boot