2 min read · Lobsters
Anthropic Replaces Git with Scion to Support 30,000 Daily Agent Merges
Anthropic migrated its monorepo from Git to Scion, a custom version control system built for always-online coding agents. The architecture uses virtualized checkouts and server-side log operations to handle over 30,000 merges and 25 million CI checkouts per day.
Why it matters. Understand the architecture patterns needed to prevent Git and CI bottlenecks when scaling autonomous Claude Code worktrees across engineering teams.