tool-design-sprint-prototype-plan

Run this skill Thursday morning after Wednesday's storyboard is signed off. It produces a role plan assigning Maker, Stitcher, Writer, Asset Collector, and Interviewer, a prototype brief with a fidelity bar, a Five-Act interview script, a trial-run checklist, and a participant confirmation tracker, all within a 90-minute timebox.

The five canonical roles from the Sprint book are Maker (builds prototype surfaces), Stitcher (connects them into a flow), Writer (writes copy), Asset Collector (sources images and sample data), and Interviewer (drafts and runs the Five-Act script). On a 4-person team, Maker and Stitcher typically merge while Interviewer stays dedicated.

The Five-Act interview consists of Welcome (5 min), Context (5-10 min), Intro (5 min), Tasks (20-30 min), and Debrief (5-10 min). The act sequence is fixed; only the Tasks act is heavily customized with open-ended tasks derived from the storyboard.

No. The skill only produces the Thursday-morning planning artifact; the actual prototype build in Figma, Keynote, paper, or other media is craft work the team owns for the rest of Thursday. Using it to build the prototype is explicitly out of scope.

Do not use it if Wednesday's storyboard is not locked, since the prototype has no spec without it. Also avoid it if the team plans to skip the Thursday trial run, or if Friday participant cancellations have shrunk the cohort below four, which requires pausing the sprint.

The participant confirmation tracker re-confirms all five Friday slots Thursday morning. Cancellations trigger buffer-slot activation, and if the cohort shrinks below four participants, the sprint pauses to decide whether to postpone Friday or accept a reduced-evidence test.