Reuben Horne is Levy Street’s lead infrastructure engineer. Reuben came to infrastructure from full-stack development and specialises in Python services, AWS, Terraform and the observability that keeps AI systems dependable, with experience running large government data pipelines.
World of ClaudeCraft
Reuben is the lead developer of World of ClaudeCraft, Levy Street’s open-source browser MMO. Reuben authored its first commit, a 16,589-line game co-authored with Claude Fable 5, and the first 48 hours of work that took it to a public launch. In Levy Street’s announcement Reuben put it simply: “Fable gave us a playable foundation in two days.”
Research
Reuben is a joint first author of GTM-Bench, the go-to-market agent benchmark published by Blackpearl Group.
Work
- World of ClaudeCraftA free, open-source browser MMO whose first playable version was built with Claude Fable 5 in about two days. 2,300+ GitHub stars.
- GTM-BenchA 72-task benchmark for AI agents doing go-to-market research, published by Blackpearl Group and co-authored by Levy Street team members.
- Building games with AISix engineering lessons from two games built with AI coding models, and how they apply to business software.
- Managed AI operationsWe run your AI systems after launch: monitoring, incidents, tested releases and vendor changes, under a written scope.