#theo

AI & ML

T3 Code: what Theo's open-source coding-agent app actually is

T3 Code is a free, MIT-licensed control surface for coding-agent harnesses you already pay for, not a harness itself. What it is, how it relates to Theo's separate tstack skills, how to install it, and what the official docs and Theo's videos support.

Michael Narehood·Nov 3, 2026·12 min read