LangChain Intro

This project is a simple LangGraph application that can receive commands to make a text uppercase or lowercase.

Example: "Make this complete sentence uppercase."

The project showcases a compact but complete setup: graph definition, node composition, and server integration. The goal is to practice core concepts such as graph-based orchestration, modular node design, and local execution of a LangGraph-powered workflow.

Build

npm install

Run this application

npm run dev

Run the tests

npm run tests

Run the LangGraph server

npm run langgraph:serve