Shareable preview links

How it works

While a workspace session is running, Spaceboy can mint a shareable URL that serves the live app over plain HTTPS. The link carries a signed, read-only token scoped to that one workspace; it cannot control the session, and it expires on its own (default 60 minutes, never beyond the session lease).

# From the CLI
spaceboy preview url --project <id> --expires 30
# Or click Share in the workspace top bar

Anyone with the link sees the same running app the agent is editing — ideal for handing a work-in-progress to a teammate or reviewing an agent's output from a phone.