Work with Claude Code that surprised me the most recently

I’ve been building a new plugin/extension for Bunzee recently, and something Claude Code did genuinely surprised me.

Bunzee takes an idea, analyzes it, and turns it into an IA and wireframe.

But I wanted to take it one step further. Instead of forcing users to continue designing inside Bunzee, I wanted them to be able to export the result directly into Figma as actual nodes — so they could continue working naturally in the tool they already know.

Honestly, our own editor will never be as powerful as Figma.

So I initially asked Claude Code to build an HTML → Figma converter using open-source projects.

We tried about three different versions. But none of them worked well.

• Text would disappear.

• Some elements would break.

• The layout would drift.

• The overall fidelity was just too low.

At some point, the conversion was so bad that it almost felt like there was no point in having the feature to public.

Then I found a Chrome extension that could take almost any website and convert it into Figma nodes.

And I thought: “What if we benchmark this?”

So I gave the name of extension to Claude Code and asked it to analyze how it worked, then rebuild the functionality specifically for Bunzee.

And this is the part that genuinely shocked me.

Claude analyzed the JavaScript and structure of the extension and produced something

that was already roughly 80% of what we needed.

The remaining 20% was mostly testing, finding edge cases, and fixing things that didn't behave correctly.

But the important part was this:

I probably couldn't have built this myself. But give Claude Code a working reference implementation and ask it to understand the underlying behavior and rebuild it for a different product? That feels like a completely different level of development.

And honestly, it left me with a slightly uncomfortable thought:

Are Chrome extensions becoming something that can be copied in a matter of time rather than a matter of engineering? I'm not saying it can perfectly copy everything. There are still plenty of difficult problems, edge cases, and product decisions.

It was exciting. And a little scary.

What have you built recently with coding agent genuinely surprised you ?