Anthropic migrates monorepo from Git to custom Scion VCS
October 13, 2026
Anthropic replaced Git with a custom version control system, Scion, to handle a surge from 2,500 to 30,000 daily code merges. The transition included building a custom code review surface, Antique, and a specialized IAM system to support autonomous AI-driven development loops.
HOW THIS AFFECTS YOU
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builderYou can learn from how to scale infrastructure when AI agents become your primary code contributors.
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founderThis demonstrates the architectural shift required when transitioning from human-scale to agent-scale development workflows.