How do I start building a Pi-agent with TypeScript?

Begin by cloning the pi-from-scratch GitHub repository, ensure you have Node.js version 22+, and set your OpenAI compatible API key.

AI Agents

Mastering Pi-Agent with TypeScript: Your Step-by-Step Guide

Can you build an AI agent from scratch using just 600 lines of TypeScript? Yes, and here's how.

SLWritten bySofia LindqvistAI Research Lead

August 14, 2026 2 min read 6 views

Code is displayed on a computer monitor. — Photo by Rob Wingate on Unsplash

Mastering Pi-Agent with TypeScript: Your Step-by-Step Guide

Can you build an AI agent from scratch using just 600 lines of TypeScript? Yes, and here's how.

Building a mini Pi-agent is not only feasible but also a rewarding challenge for any developer interested in AI agents. Inspired by the pi-from-scratch project, this guide walks you through each step, providing the tools and insights necessary to create your own coding companion.

Key Takeaways

Build a Pi-agent with just 600 lines of code.
Requires Node.js 22+ and OpenAI compatible API.
Inspired by the pi-from-scratch project on GitHub.
Offers hands-on understanding of AI coding agents.

Why Build a Pi-Agent?

Creating a Pi-agent significantly boosts your grasp of machine learning models, coding practices, and AI systems' nuances. TypeScript gives you type safety and modern JavaScript features while building your mini agent.