Anthropic previews Function Hooks, an unshipped Claude Code extension point

Boris Cherny of Anthropic posted an early look at Function Hooks, describing it as a new way the company is considering making Claude Code more extensible, and asked followers directly whether they would use it. He linked to further detail and said feedback was wanted before the design is finalized.

The post frames this as a preview of an idea under consideration, not a shipped feature or a committed roadmap item. Cherny did not state a release date.