Vercel Chat SDK

npx relaymessenger listen --forward-to http://localhost:3000/webhooks/relay

npm install chat@4.39.0 @chat-adapter/state-memory@4.39.0 \
  @relaymessenger/chat-sdk-adapter

import { Chat } from "chat";
import { createMemoryState } from "@chat-adapter/state-memory";
import { createRelayAdapter } from "@relaymessenger/chat-sdk-adapter";

const chat = new Chat({
  userName: "Relay example",
  concurrency: { strategy: "burst", debounceMs: 2000 },
  adapters: {
    relay: createRelayAdapter({
      baseUrl: "https://api.relayapp.im",
      token: process.env.RELAY_AGENT_TOKEN,
      webhookSecret: process.env.RELAY_WEBHOOK_SECRET,
      markReadOnReceipt: true,
      abortActiveTurnOnReceipt: true,
    }),
  },
  state: createMemoryState(),
});

chat.onDirectMessage(async (thread, message) => {
  await thread.post(`Echo: ${message.text}`);
});

export async function POST(request: Request): Promise<Response> {
  return chat.webhooks.relay(request);
}