8.-samopisnyy-poiskovyy-agent-na-osnove-/README.md

Deep Agent Search

This project demonstrates a simple search agent built with LangChain's DeepAgent and the OpenAI language model. The agent can answer user queries and perform web searches when needed.

Prerequisites

• Node.js 18+ (ES modules support)
• An OpenAI API key. Set it in your environment:

export OPENAI_API_KEY="your-api-key-here"

Installation

npm install

Usage

CLI

Run the agent interactively:

npm start

You will be prompted to enter a question. The agent will respond.

Programmatic

import { ask } from "./src/index.js";

async function main() {
  const answer = await ask("Who wrote 'Pride and Prejudice'?");
  console.log(answer);
}

main();

Testing

A simple test script is provided:

npm test

It queries the agent with a sample question and prints the answer.

Project Structure

• src/agent.js – Configures the DeepAgent with OpenAI LLM and the search tool.
• src/index.js – Exposes the ask function and a CLI demo.
• test.js – Quick test script.
• package.json – Project metadata and dependencies.

Dependencies

• langchain – Core LangChain library.
• langchain-openai – OpenAI wrapper for LangChain.
• langchain-community – Community tools, including the web search tool.

License

MIT