test.ts

import { AgentExecutor, createOpenAIToolsAgent } from "langchain/agents";
import { pull } from "langchain/hub";
import { ChatOpenAI } from "@langchain/openai";
import type { ChatPromptTemplate } from "@langchain/core/prompts";
import { DallEAPIWrapper } from "@langchain/openai";

// Get the prompt to use - you can modify this!
// If you want to see the prompt in full, you can at:
// https://smith.langchain.com/hub/hwchase17/openai-tools-agent
const prompt = await pull<ChatPromptTemplate>("hwchase17/openai-tools-agent");

const tool = new DallEAPIWrapper({
  n: 1, // Default
  model: "dall-e-3", // Default
  apiKey: openAIKey,
});

const tools = [tool];
  
const llm = new ChatOpenAI({
  model: "gpt-3.5-turbo-1106",
  temperature: 0,
  openAIApiKey: openAIKey,
});

const agent = await createOpenAIToolsAgent({
  llm,
  tools,
  prompt,
});

const agentExecutor = new AgentExecutor({
  agent,
  tools,
});

const result = await agentExecutor.invoke({
  input: "Create the image of a dog",
});

console.log(result);