Build AI agents
without lock-in

import "dotenv/config";
import { Agent, run, defineTool, ClaudeProvider } from "@mehularora/stark-kit";
import z from "zod";

const provider = new ClaudeProvider();

const weatherTool = defineTool({
  name: "getWeather",
  description: "Get the current weather for a city.",
  parameters: z.object({
    city: z.string().describe("The name of the city"),
  }),
  execute: async ({ city }) => {
    return `The weather in ${city} is sunny and 22°C.`;
  },
});

const agent = new Agent({
  name: "WeatherBot",
  provider,
  instructions: "You are a helpful assistant. Keep answers brief.",
  tools: [weatherTool],
});

const response = await run({ agent, messages: "What's the weather in Tokyo?" });

if (response.status === "complete") {
  console.log(response.content);
}