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Sandboxes · 2 November 2026

Commands run as the sandbox user, and the HTTP proxy works at every size

On some sandboxes, commands, processes, terminals and file writes ran as root even though the sandbox reported user: "sandbox". They now run as the sandbox user (uid 1000) with its HOME, and files written through the files API are owned by that user, as on every other sandbox; user: "root" still runs a command through sudo. On those sandboxes, every request sent through the built-in proxy (HTTPS_PROXY, http://127.0.0.1:10800) at a size other than the default returned 502 with Connection reset by peer; the proxy now carries them. /workspace is owned by the sandbox user, the host name runtime-guest resolves (so sudo no longer prints unable to resolve host), and PATH, NO_PROXY and NODE_USE_ENV_PROXY are set as on every other sandbox.

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