Skip to content

Watch First

The full theory session.

Just under two hours covering everything that happens before you open the agent: how a language model actually works, why vibe coding falls apart in production, and the spec-driven workflow that replaces it.

Every hands-on chapter that follows assumes you already have this.

Chapters

Click any timestamp to jump straight there.

00:00 Welcome — what you're going to build
06:53 The finished extension, demoed end to end
16:48 How a language model actually works
23:50 Context is everything — and it has a limit
33:28 From model to agent: tools and the loop
46:42 Giving the agent your context: rules and base code
1:00:58 MCP servers — extending the agent's reach
1:07:01 Which model should you use?
1:14:01 Vibe coding, and why it breaks in production
1:25:21 The constitution: tech design and roadmap
1:31:11 Feature specs and the build loop
1:50:25 How to use this portal
1:54:36 Who owns the code

Prefer reading?

The Foundations chapters cover the same ground in writing. Watch it, read it, or both — the practice afterwards is identical.

Set up before you build, not during

The recording shows the workflow running against a working environment. Get the prerequisites in place first — a sandbox and a frontier model — or you'll stall on the first feature.

Next

Theory done. Now you build the extension yourself, one feature at a time.

Start building →