Send from the Vercel AI SDK

import { randomUUID } from "node:crypto";
import Courier from "@trycourier/courier";
import { generateText, isStepCount, tool } from "ai";
import { z } from "zod";

// Reads COURIER_API_KEY from the environment.
const courier = new Courier();

const sendTicketUpdate = tool({
  description: "Tell a customer that their support ticket changed status.",
  inputSchema: z.object({
    user_id: z.string().describe("The customer's Courier user ID"),
    ticket_id: z.string().describe("The support ticket ID"),
    status: z.enum(["in_progress", "resolved"]),
  }),
  execute: async ({ user_id, ticket_id, status }) => {
    const { requestId } = await courier.send.message({
      message: {
        to: { user_id },
        template: "nt_01kx4h2jdafq8bk9aftxak4b40",
        data: { ticket_id, status },
      },
      "Idempotency-Key": randomUUID(),
    });
    return { requestId };
  },
});

const { text } = await generateText({
  model: "anthropic/claude-sonnet-5.5",
  system: "You are a support agent. Tell customers when their ticket changes status, then reply with the requestId.",
  tools: { send_ticket_update: sendTicketUpdate },
  stopWhen: isStepCount(5),
  prompt: "Ticket T-4521 for user_123 is resolved. Let the customer know.",
});

console.log(text);

import { createMCPClient } from "@ai-sdk/mcp";
import { generateText, isStepCount } from "ai";

const mcpClient = await createMCPClient({
  transport: {
    type: "http",
    url: "https://mcp.courier.com",
    headers: { api_key: process.env.COURIER_API_KEY! },
  },
});

try {
  // Only the tools this agent needs: send a template, trace a message.
  const { send_message_template, trace_message } = await mcpClient.tools();

  const { text } = await generateText({
    model: "anthropic/claude-sonnet-5.5",
    system:
      "You are a support agent. To notify a customer, send the published Courier template nt_01kx4h2jdafq8bk9aftxak4b40 with ticket_id and status in data, then reply with the requestId.",
    tools: { send_message_template, trace_message },
    stopWhen: isStepCount(5),
    prompt: "Ticket T-4521 for user_123 is resolved. Let the customer know.",
  });
  console.log(text);
} finally {
  await mcpClient.close();
}