Use Nuntly from the AI SDK

import { anthropic } from '@ai-sdk/anthropic';
import { createMCPClient } from '@ai-sdk/mcp';
import { Experimental_StdioMCPTransport } from '@ai-sdk/mcp/mcp-stdio';
import { generateText, isStepCount } from 'ai';

const apiKey = process.env.NUNTLY_API_KEY;
if (!apiKey) throw new Error('Set NUNTLY_API_KEY before you start the agent.');

const nuntly = await createMCPClient({
  transport: new Experimental_StdioMCPTransport({
    command: 'npx',
    args: ['-y', '@nuntly/sdk-mcp@2'],
    env: { NUNTLY_API_KEY: apiKey },
  }),
});

try {
  const { text } = await generateText({
    model: anthropic('claude-sonnet-5-5'),
    tools: await nuntly.tools(),
    stopWhen: isStepCount(5),
    prompt: 'Send a one-line status email from hello@yourdomain.com to you@example.com.',
  });
  console.log(text);
} finally {
  await nuntly.close();
}