Chat SDK Adds WhatsApp Adapter for Multi-Platform Agentic Bots

Vercel

Mar 15, 2026 · Updated Apr 25, 2026

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.

Chat SDK, Vercel's unified TypeScript SDK for building chat bots across messaging platforms, adds a WhatsApp adapter via the @chat-adapter/whatsapp package. It supports messages, reactions, auto-chunking, read receipts, and multi-media downloads (images, voice messages, stickers). The adapter does not support message history, editing, or deletion — cards render as reply buttons with up to three options and fall back to formatted text. WhatsApp's 24-hour messaging window applies.

Chat SDK's adapter model means teams already on Slack, Discord, Teams, GitHub, or Telegram can extend to WhatsApp through the same single-codebase pattern — no separate bot infrastructure needed for each platform.

Point your existing Chat SDK bot at the WhatsApp adapter and test whether your support or notification flows fit the constraints: no message history and a 24-hour response window favor reactive exchanges over persistent conversations.

View the full update on vercel.com

Vercel Developers

@vercel_devMar 11

Chat SDK now supports WhatsApp. Extend your agentic chat bots with WhatsApp messages, reactions, typing indicators, location sharing, and more using a simple adapter: 𝚊𝚍𝚊𝚙𝚝𝚎𝚛𝚜: { 𝚠𝚑𝚊𝚝𝚜𝚊𝚙𝚙: 𝚌𝚛𝚎𝚊𝚝𝚎𝚆𝚑𝚊𝚝𝚜𝙰𝚙𝚙𝙰𝚍𝚊𝚙𝚝𝚎𝚛() } https://t.co/VO7l9zkdhh

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