zopu-code/repos/effect/.changeset/fix-anthropic-memory-tool-requires-handler.md

@effect/ai-anthropic

@effect/ai-anthropic
patch

Fix Memory_20250818 provider-defined tool missing requiresHandler: true. Like the other client-executed tools (TextEditor_20250728, Bash_2025*, ComputerUse_2025*), the memory tool requires the application to implement its execution (view/create/str_replace/insert/delete/rename over /memories/*). Without this flag, Tool.HandlersFor excluded it from the required handlers, making it impossible to type-check a handler for Memory_20250818 in Toolkit.toLayer.