CopilotKit v1.50 Release Announcement: What's New for Agentic Builders

CopilotKit v1.50 introduces a major but backward-compatible upgrade for building agentic applications, centered on the new `useAgent` hook, which synchronizes conversation state, streams agent events, sends messages, supports shared structured state, and enables multi-agent coordination. The release adds durable thread IDs and pluggable persistence, with in-memory and SQLite options for development and planned cloud and enterprise production storage, allowing conversations to be restored and streams reconnected automatically. New v2 UI components, including CopilotChat, CopilotSidebar, and CopilotPopup, provide a customizable slot-based design system while remaining compatible with existing v1 components and hooks. The update expands Zod-based type safety across agent and tool integrations, improves direct-to-LLM support and shared state for BasicAgent, and removes GraphQL to simplify configuration, self-hosting, and debugging.

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