The Vercel Sandbox CLI is now more agent-friendly

Key signals

• Sandbox CLI v4.0.1 ships four output/error improvements explicitly framed as agent-friendly
• Error messages now carry actionable next steps instead of raw API dumps
• create and fork output ends with connection hints to reduce ambiguity for agents
• sh command now opens interactive shell without requiring its own command parameter
• CLI supports precise command suggestions that rewrite user intent into correct syntax
• Version check is cached and runs concurrently with creation—adds zero latency
• DEBUG=sandbox:errors flag available for debugging; prerelease versions skip version check
• Creation defaults chosen client-side to prevent outdated installs from silently using old settings
• Sandbox CLI v4.0.1 ships error/output improvements for agent parsing
• Error messages now include next-step actions instead of raw API dumps
• New 'sh' command opens plain interactive shell with no command prefix needed
• CLI can suggest corrected commands when user intent is misunderstood
• Cached version-check runs concurrently, adds no latency
• Prerelease versions skip update checks; DEBUG=sandbox:errors restores verbose logging
• Create/fork/shrink commands now hint at connection steps for fresh sandboxes