lean-ux-canvas

Start with the business problem and target user, then work through the eight boxes in order, gating after each one. The skill asks at most three targeted questions when context is missing and proceeds with clearly labelled assumptions.

Box 2 captures measurable business outcomes as numbers with direction, while Box 4 captures user outcomes as feelings or benefits with no metrics. If Box 4 contains a percentage it belongs in Box 2, and if Box 2 contains an adjective it is wrong.

Yes. When PROBLEM_STATEMENT.md and PROTO_PERSONA.md exist upstream, Boxes 1, 3, and 4 are pre-populated from those artifacts with sources shown, and the conversation starts at Box 2 where new decisions are needed.

Ask which assumption, if false, would waste the most work, then classify it as value, usability, feasibility, or viability. Teams typically name a comfortable usability assumption when the value assumption is the one that would sink the initiative.

A valid Box 8 entry requires three things: the method, a pass/fail signal stated in advance, and a timebox. Running a survey is not an experiment; the result must be able to change the plan, such as promoting a different solution on a fail signal.

The canvas is finished when the Box 8 experiment is cheap enough to run this sprint, not when all eight boxes contain text. Boxes 7 and 8 loop until confidence is high enough to build or the assumption is cheap enough to risk.