Vibe coding without code skills: the actual build loop explained
This is Part III of Matt Blumberg’s five-part vibe coding series. Part I covered the basics. Part II covered setup. Now comes the part that actually matters: what you do every day when you’re building.
The good news is that the core loop is simple. Once you’ve seen one complete cycle, you’ve seen all of them. The whole job is repeating it a few hundred times.
The Complete Build Cycle
Here is one turn of the crank, start to finish:
- An idea arrives.
- You argue it out in the Project.
- The Project writes you a handoff prompt in one copyable block.
- You paste that prompt into the build tool.
- The build tool writes the code, saves it, and pushes it.
- The live site updates itself.
- You look at it.
That’s the entire loop. No terminal wizardry. No manual deploys. No debugging a dependency tree at midnight. You supply the judgment and the taste. The tools handle the execution.
️ Conventions That Earned Their Place
Blumberg notes that certain conventions emerged the hard way, through building rather than planning. The series does not spell out every one of them in this excerpt, but the structure of the loop itself is the bedrock convention: always run an idea through the Project before touching the build tool.
The handoff prompt that comes out of that conversation is the critical artifact. It captures the decision in a single copyable block so nothing gets lost in translation between your thinking and the code that gets written.
Authentication: The One Thing You Rent, Not Build
One concrete example from the build: authentication. Blumberg’s two apps solved it two different ways, and both approaches were correct for their context.
- App one used the login system built into its database service. Accounts came essentially free, with no custom code needed.
- App two put a single gate in front of the whole site that emails a sign-in link and only accepts a handful of approved addresses. That took an afternoon, and authentication was never a project after that.
The principle behind both choices is the same: use rented pieces built by people who actually own the security problem. Blumberg is direct about why this matters. The security standard required for a properly built auth system is one a vibe coder cannot personally meet. Using an existing service is not laziness. It’s the responsible move.
What This Means for Non-Coders Building Real Things
The loop described here is not a toy workflow. It’s the same basic cycle used across both of Blumberg’s apps, repeated enough times to ship a working product.
The key mental shift is that your job is never to write code. Your job is to have a clear idea, argue it into a precise prompt, and then evaluate the result. The build tool does the writing. You do the thinking and the judgment.
Parts IV and V of the series will continue from here. If you haven’t read Parts I and II, the Startup CEO blog has the full series.
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