Client Persistence

Builds on ai-core, and on ai-core/chat-experience for useChat itself.

No extra package. The adapters below ship in the framework packages (@tanstack/ai-react and friends, re-exported from @tanstack/ai-client), so browser persistence needs nothing installed beyond what a chat UI already has. The server half is a separate package — see @tanstack/ai-persistence and its ai-persistence/server skill.

A ChatClient / useChat keeps messages in memory. The persistence option stores one record per threadId so a reload can repaint the transcript, restore a pending interrupt, and rejoin an in-flight run.

Import adapters from the framework package (not @tanstack/ai-client unless vanilla JS):