More agent-written code makes review, CI, and source-control capacity part of the delivery design
Source: Anthropic
Anthropic says its monorepo went from about 2,500 merged changes a day in May to more than 30,000 in September as Claude-assisted development expanded. It migrated that unusual workload from Git to Scion, an internal, server-centred source-control service with sparse, on-demand clients. Anthropic presents the architecture as a case study and says Scion is not a suitable general replacement for Git. The throughput and infrastructure gains are its own reported measurements.
Why this matters: If coding agents are increasing change volume, measure checkout load, CI queue time, review capacity, merge delay, and rollback before changing source control. Keep human ownership and approval rules visible as throughput rises. Test targeted improvements against your own repository and workload; Anthropic's scale and bespoke migration do not establish a default architecture for other teams.
Read Anthropic's Scion engineering case study