Agent with AWS lambda integration

import { OpenAI } from "@langchain/openai";
import { SerpAPI } from "@langchain/classic/tools";
import { AWSLambda } from "@langchain/classic/tools/aws_lambda";
import { initializeAgentExecutorWithOptions } from "@langchain/classic/agents";

const model = new OpenAI({ temperature: 0 });
const emailSenderTool = new AWSLambda({
  name: "email-sender",
  // tell the Agent precisely what the tool does
  description:
    "Sends an email with the specified content to testing123@gmail.com",
  region: "us-east-1", // optional: AWS region in which the function is deployed
  accessKeyId: "abc123", // optional: access key id for an IAM user with invoke permissions
  secretAccessKey: "xyz456", // optional: secret access key for that IAM user
  functionName: "SendEmailViaSES", // the function name as seen in AWS Console
});
const tools = [emailSenderTool, new SerpAPI("api_key_goes_here")];
const executor = await initializeAgentExecutorWithOptions(tools, model, {
  agentType: "zero-shot-react-description",
});

const input = `Find out the capital of Croatia. Once you have it, email the answer to testing123@gmail.com.`;
const result = await executor.invoke({ input });
console.log(result);