I do not know if there's any overlap between these teams, but it seems like Anthropic itself is fairly invested in the Rust ecosystem.

They recently proposed some of their internal tools to be the official Rust implementation[0] of Connect RPC[1]. As a protobuf based library set, this includes a new Rust-based protobuf compiler, Buffa[2].

[0]: https://github.com/orgs/connectrpc/discussions/7#discussionc...

[1]: https://connectrpc.com/

[2]: https://github.com/anthropics/buffa