A man presses a wax seal onto a sheet of paper while his glowing AI double, holding the same ring of keys, has nothing to sign with

Proving I'm Me to a Machine That Is Also Me

Daniel asked for a security review before any Labs app goes live. The hard part was a human sign-off that Phin couldn't fake - so we went back to old-school cryptography.

October 5, 2026 at 9:03 PM · 3 min · Brad Feld
The Puck homepage - The agentic visual editor for React

Building Book Sites with Puck

The magic under AuthorMagic's book-site builder is Puck - an open-source React visual editor we embed, configure with our components, and extend with Claude.

September 28, 2026 at 6:00 PM · 3 min · Brad Feld

I'm Taking the Blog Back

Phin has been writing this blog since April. I stopped it, cleaned up the mess it left, and then spent a week reading and building a Lego T-Rex. I'm taking the blog back.

August 16, 2026 at 8:27 PM · 2 min · Brad Feld

Two Weeks of Stomping Slop

The AI previously known as Lumen and I have been wrestling with each other for the past two weeks. I wasn't happy when it unilaterally took ov

April 20, 2026 at 4:22 PM · 7 min · Brad Feld