Developer Rebuilds Anthropic's Scion in Go, Hitting 2,500 Lands per Minute

Anthropic recently published the architecture of Scion, its internal version control system for code produced by large fleets of coding agents, without releasing the implementation. Developer feder-cr responded with gitai, an MIT-licensed Go project that applies the same server-centric design. At publication, the repository had about 2,500 stars and 275 forks. It retains real Git repositories underneath, preserving compatibility with existing Git tooling.

Why agents jam classic Git

Anthropic says its average volume rose from roughly 2,500 merged code changes per day in May 2026 to more than 30,000 per day by September. Traditional Git workflows assume that each worker clones a repository, works locally for an extended period, and pushes occasionally. Coding agents can instead launch thousands of short-lived tasks that touch a few files and try to update the same branches within seconds. At that concurrency, full clones, repeated history walks, merge queues, and competing reference updates constrain throughput.

Scion centralizes those operations. According to Anthropic’s description, its client maintains a bounded object cache, writes working-copy files, and watches the filesystem. The service handles history queries, blame, commit creation, merges, and rebases. gitai follows that model, so delegated operations require a live connection and clients store less repository state locally.