Cantellis
Insights

September 17, 2026 · 4 min read

From brief to working POC in a day

How we turn a problem statement into a clickable proof of concept before any contract is signed.

Proposals describe what might happen. A working prototype shows it. So we start with the prototype.

Step one: the north star

Before anything is built, we write one sentence that says what success looks like and how it is measured. If we cannot write it, we are not ready to build.

Step two: one hypothesis

We pick the single assumption that, if true, moves the north star the most. The POC exists only to make that assumption testable.

Step three: the smallest build

We build the thinnest version that a real user can click through. Not a mockup: working screens, real states, and a flow you can hand to a customer.

Try it yourself

You can run this motion on your own problem on our site. Describe the problem and the blockers, and watch a small working prototype take shape in minutes.

Proof, not promises

Try it on your problem.

Describe what is blocking you and get a small working prototype in minutes.

Build a POC

Talk to the builder

What needs to move?

Send a short brief. The person who reads it is the person who will do the work.

Send a brief