Map every path before you build. Answer what you know, copy the prompt, and paste it into Claude or any AI chat to get the happy path, the alternate routes, everything that can go wrong, and a flow diagram.

The flow

Intent and outcome, not the mechanics of how people get there.

Use the real sequence if you have it. Mention any step where people choose between two ways, or where more than one person has to act.

Who and where

Who is this for: one type of user, or a few different personas?Select all that apply
Add details about them

Demographics (age range, language, tech comfort, accessibility needs), goals and needs, pain points, personality traits. The more you share, the sharper the unhappy paths.

What device or touchpoint will they use it on?Select all that apply
Add the specific device and context

If they're moving, multitasking or have their hands full, say so. If the flow spans several touchpoints, say which step happens where.

Is this designed for one region today, or does it need to work globally, now or down the line?Pick one
Name the regions
More context Optional

Named services let the system-failure branches be specific.

Quotas, regional restrictions, pricing tiers, regulatory constraints.

Skip this for a brand-new flow.