After finishing a resume, one developer faced the familiar wall of "what should I actually build?" What followed was a practical framework for validating a side project idea — one built to avoid the trap of endlessly preparing to build without ever shipping anything.
Four criteria for validating a side project idea
The author settled on four filters. First, can it run on free hosting? Spending money before there's any traffic or revenue doesn't make business sense at the earliest stage. Second, keep implementation complexity manageable — high difficulty doesn't make a service good, it just makes maintenance harder. Third, favor low operational overhead and automation — a service doesn't run itself just because it launched; low-effort operations were treated as a non-negotiable design constraint. Fourth, avoid cloning an existing service outright — cloning is fine for practice, but learning product thinking and operations requires something with a genuine point of difference.
Validating with an AI partner
The author turned these four criteria into a set of instructions and used them repeatedly with Claude to brainstorm and stress-test ideas — even asking what could be built with public APIs. Good ideas didn't come easily. The breakthrough came from flipping the question: instead of chasing an impressive concept, start from "what personally annoys me?" and then re-apply the same four filters. Notably, the idea that eventually stuck was the very first one that had come to mind — time spent chasing flashier alternatives was, in hindsight, a detour.
What marketers can take from this
These four criteria map directly onto how to plan a marketing campaign or content experiment. Validating with free or low-cost channels before committing budget, and designing for low operational overhead so an experiment can repeat, are exactly the principles behind disciplined growth experimentation.
Using AI as a brainstorming partner is also worth noting: defining clear criteria (cost, complexity, differentiation) up front, then iterating with AI to narrow down campaign concepts or copy ideas, is a repeatable pattern for any team exploring new ideas. To get help structuring experiments and channel strategy, explore Best Partner's services or get in touch.