Welcome to Full Stack Friday, serving up the hottest AI developments fresh off the griddle, specifically for PM builders. We've got 2,315 new subscribers since the last send – welcome to the stack! 🥞

The past few weeks were pretty quiet on the AI launch front. No new frontier models dropping. No earth-shattering announcements.

But I've been busy. Really busy. I have a lot of fun stuff to share with you today.

Here's what we're covering:

Let's do this.

This newsletter's sponsor is something I actually use every day:

Nimbalyst → It's the best way for PMs to use Claude Code.

Here's the problem: Claude Code runs in terminal. Which means your options are:

Nimbalyst fixes this. You can edit files with formatting directly. It's what Claude Code should feel like for people who work in documents, not code.

And it's completely free! If you’re already using Claude Code, give it a try.

Or if you have some spare time over the holidays, my Claude Code for PMs course can be completed in about 5 hours — and you'll start the new year with legit superpowers. It’s great in Nimbalyst!

I shipped a lot over the break. Here's the quick rundown:

🔶 Antigravity for PMs - You asked, I delivered. This was the most voted for request with the last Weekly Stack on 12/19, and I shipped it on 12/22. It was a busy weekend, but I wanted to get it out in case people wanted to learn it over the holidays.

I've got tool-in-tool guides for the big three now:

The main one I'm missing is Codex for OpenAI / ChatGPT users. I'll get to it eventually - for now there's my episode with Aakash Gupta that covers it pretty well.

I basically just want to build the things you want!

🔶 Claude Code for Everyone - New launch! A lot of Claude Code concepts aren't PM-specific. They apply to anyone. So I launched CC4E! I originally planned to have core modules on CC4E and PM-specific stuff on CC4PMs, but I've realized that's too confusing.

So to make this easy:
→ Claude Code tailored to PMs (probably most of you): ccforpms.com
→ Claude Code to share with non-PMs: ccforeveryone.com

If you're not sure which to do, my official rec for this newsletter is CC4PMs - it already has has more advanced content like the Nano Banana Pro integration.

Next week I'm launching an end-to-end vibecoding guide! All the way through to deployment with a real working link. Deployment is hard so it's rarely covered, but I'm pretty sure we can do this.

🔶 Product in Seattle - If you live in Seattle, I'm trying to bring some life into the kind-of-dead product scene here. So I launched Product In Seattle!

My goal is to build a network of the people, sponsors, and venues to make it easier for anyone to host PM events. Join! Or share with anyone you know in Seattle.

Here's what matters for everyone: I built this entire site - SEO, analytics, newsletter, everything - in a single afternoon with Claude Code. Over 150 signups already.

I've wanted to launch this ever since I moved to Seattle almost two years ago, but I never quite had the activation energy to do it. But these things are more possible than ever now.

Got something you've "always wanted to do"? You might just be a single afternoon and a chat with Claude Code away from making it happen. Things are different now.

🔶 The Full Stack PM website - Also revamped in a few days! I've been launching a lot and won't be slowing down, so I wanted the website to be the home base for everything I'm making. Access to all my materials and courses will find permanent homes there.

This is one of my favorite launches in a while. Just run claude --chrome and Claude Code gets browser superpowers.

It's browser automation via MCP. It can open web pages, click, scroll, read, fill out forms - the whole thing. And it uses your regular browser so you don't need to log into anything again.

It's SLOW, so set it up for tasks you can walk away from. Configuring websites. Data entry. Fighting with customer service...

Speaking of which.

I hate fighting with customer service. HATE it. But I wondered – could Claude Code do it for me?

I was owed money from AT&T. I pointed Claude at the chat, explained the situation, and walked away. It negotiated them up from $60 to $100. Not bad. But I was really owed $300.

Claude suggested I file an FCC complaint. I told it to do it. It did.

A few days later, I got a call from AT&T's Office of the President offering the full amount.

Crazy times.

I posted about this on X. And then bcherny - THE CREATOR OF CLAUDE CODE - quote tweeted it calling it a good use case.

I can die happy.

Why This Matters

Browser automation opens up a lot. The AI can check its own work. Build something, open it in the browser, verify it looks right, click around. This loop is huge for quality and trusting that the AI will actually get it right.

These loops are becoming everything in AI building, as we'll see next.

There's a new workflow pattern blowing up on X called "Ralph Wiggum." Yes, like the Simpsons character.

The core idea: instead of prompting an AI coding agent step by step, you give it a structured list of requirements (like a PRD in JSON format) and let it run in a loop.

Each iteration, it:

The agent chooses the task, not you. You define the end state. Ralph gets there.

If you want to try it, just point your AI agent at this repo and ask it to set you up: https://github.com/snarktank/ralph

Matt Pocock's full guide goes deep on the setup - progress files, feedback loops, Docker sandboxes for safety. Worth reading if you're doing any serious AI coding.

The Meta-Point

Progress in AI right now is happening on multiple fronts at the same time:

So even when there's no big model drop, people are figuring out new ways to use what exists.

Karri Saarinen put it well in this excellent article:

Coding is just the first arena for these kinds of improvements – we still haven't seen this in the PM space, but I am certain the possibility exists.

It's going to take someone with both excellent product sense AND understanding of AI... probably a Full Stack PM 🥞

Which brings me to my final thing:

While I’m becoming an expert at using and teaching the AI tools, I’ve realized I need a deeper understanding of how AI actually works to make the most of this crazy technology and make my own AI stuff.

I’ve been been doing Product Faculty’s AI PM Certification. The combo of great content + practical Build Labs to apply the content has made this one of the best courses I’ve taken.

I was able to get a $500 discount code for readers of the Full Stack PM. Use this link or code CARL to get it.

Next cohort starts 1/26.

This is a meme I found + a fun little story I wrote to accompany it.

2026 is the year of serious shipping. I can feel it.

If you haven't done the Claude Code course yet, now's the time. Module 1 takes about 2 hours: → Claude Code for PMs

Lots of new modules coming soon, so get the foundation down.

Keep building,
Carl