Vercel has open sourced Chat SDK, a TypeScript library that allows developers to write chatbot logic once and deploy it across Slack, Microsoft Teams, Google Chat, Discord, GitHub, and Linear from a single codebase. The SDK features event-driven architecture with type-safe handlers, JSX-based UI components that render natively on each platform, and distributed state management with Redis support. It also integrates with AI SDK for streaming AI responses in real-time. This addresses the traditional pain point of maintaining separate codebases for each chat platform, significantly reducing development overhead for enterprise chatbot deployments.