Vercel Open-Sources Chat SDK for Multi-Platform Bot Development

Vercel

Feb 24, 2026 · Updated Apr 25, 2026

Vercel open-sourced Chat SDK, a TypeScript library for building chatbots across Slack, Teams, Google Chat, Discord, Telegram, GitHub, and Linear from one codebase. It includes AI streaming for LLM responses and JSX cards that render natively per platform.

Vercel open-sourced Chat SDK, a TypeScript library that lets you write chatbot logic once and deploy it across seven platforms - Slack, Microsoft Teams, Google Chat, Discord, Telegram, GitHub, and Linear. Add platform adapters and handle mentions, messages, reactions, buttons, slash commands, and modals through a single event-driven API.

The SDK uses an adapter pattern where each platform has its own package handling webhook parsing, message formatting, and API calls. Rich UI elements like JSX cards and modals render natively on each platform, and built-in AI streaming support lets you pipe LLM responses directly into chat threads. State management runs on Redis for serverless production environments.

Build your chatbot logic once against the event-driven API, then add platform adapters for whichever channels you need — Slack, Teams, Discord, or all seven at once — without rewriting the core logic per platform.

View the full update on chat-sdk.dev

Vercel Developers

@vercel_devFeb 24

You can now write chat bot logic once, and deploy across Slack, GitHub, Teams, and Discord. We're open-sourcing a new Chat SDK, a unified TypeScript library to build for many chat platforms with a single codebase. Now available in public beta. https://t.co/UICfmvl9BR

170

View on X

Every HeadsUpAI update is written based on its original source and reviewed before it's published. Read our editorial standards →

Keep reading

Vercel Chat SDK Adds Web Adapter to Bring Agents into the Browser

Vercel updated its Chat SDK with a new web adapter that allows developers to stream agent responses directly into React applications using the standard useChat hook. This update enables teams to maintain a single backend for AI assistants that live simultaneously on their own websites and third-party platforms like Slack or Messenger.

Chat SDK Adds WhatsApp Adapter for Multi-Platform Agentic Bots

Guillermo RauchMar 15

Chat SDK Adds WhatsApp Adapter for Multi-Platform Agentic Bots

Vercel's Chat SDK now supports WhatsApp, joining Slack, Discord, GitHub, Teams, and Telegram in its adapter lineup. Bots can send messages, reactions, and handle media like images, voice, and stickers — all within WhatsApp's 24-hour messaging window.

AI SDK Adds OpenAI WebSocket Transport for 40% Faster Streaming

OpenAIFeb 23

AI SDK Adds OpenAI WebSocket Transport for 40% Faster Streaming

Vercel's AI SDK added OpenAI WebSocket transport that cuts time to first byte by up to 40%. Swap in a WebSocket fetch adapter and streaming responses arrive faster by skipping repeated connection handshakes.

Vercel Launches Plugin Giving Coding Agents 47+ Platform Skills

Vercel DevelopersMar 19

Vercel Launches Plugin Giving Coding Agents 47+ Platform Skills

Vercel launched a plugin for coding agents that gives Claude Code and Cursor platform-wide knowledge of Vercel's ecosystem. With 47+ specialized skills and three specialist sub-agents, agents can now handle Vercel-specific tasks with far less manual context setup.