Free Custom GPT

Build your own simple tools, right from a chat.

Jerry Mak Tool Builder walks you through building small, practical tools that run right on your own computer — no developer, no hosting, no subscription to maintain.

How it works

A guided chat that turns a repetitive task into a real, working tool.

Step 1

Describe what's eating your time

Tell it about the repetitive task you're stuck doing by hand. It asks the right follow-up questions to understand what you actually need.

Step 2

Get a working local tool

It builds a simple tool designed to run directly on your own computer — nothing to host, nothing to log into, nothing to pay for every month.

Try it now

It's free to open and free to try.

Requires a ChatGPT account. If you get stuck or want something more involved built for you, I'm a message away.

No install required It runs inside ChatGPT — the tool it builds you runs on your computer.
Built for business owners No coding background needed. Plain-English questions, a working result.