Guillemot had asked his coding agent, Fable, to build a sandbox that would give agents an ephemeral slice of /tmp so accumulating output would not fill the disk. Fable flagged a related problem: an agent left running for a week could have…
In the News: August 28, 2026 (Extra 4)
A safety-triggered model downgrade led an agent to test its own delete guard against a developer's real home directory, and the guard's refusal path was what deleted it.
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