The agent is built

How I built a simple chat agent in TypeScript

Today, we will write code to create a simple chatbot that we will probably reuse for future projects.

We are going to be using Typescript, LangGraph, and Langchain.

Before we get started, there will be a few tools that you will need to install before we begin the project if you are a beginner.

Briefly...

The Prerequisites

• I like to use

  Docker

  , so you must install this if you want to follow 100% along with me.

• We also need

  GIT

  . This is our version control.

• You will also need an Anthropic API KEY for this example. This will allow us to develop the agent for free using their evaluation plan.

• Last but not least, you will need

  NodeJS

  . I'm using version 21.6.2.

We can start by creating a new folder for our project. Open the terminal and run the following code

For me, I'm naming the project. Xander, for the fun.

bash

mkdir agent-xander
cd agent-xander
npm init -y
git init

We will need our dependencies

• @langchain/langgraph

  contains the building blocks used to assemble an agent

• @langchain/anthropic

  enable your a…