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prototype

Use when asked to prototype one design question through a cheap logic or UI experiment, including button-driven state-model checks. Not for polished artifacts: use polished-web-prototype.

.devin/skills/prototype/SKILL.md

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# Prototype

## Contract

| Field | Bound contract |
|---|---|
| Trigger | Explicit model invocation: one design question needs a cheap logic or UI experiment, including a state-model, logic, or data-shape question a human checks by pressing buttons and watching state change, even when the driver is a non-developer. |
| Authority | Reversible local: writes throwaway prototype artifacts and their verdict on a throwaway branch off main; may fold the validated decision into the named real-code target as a working-tree edit the user commits through their normal flow; rollback is abandoning the throwaway branch or restoring its commits. Never push, delete existing work, or change production rendering. No remote mutation. |
| Side effect | Write one throwaway prototype artifact and its verdict off the main branch; that branch is the evidence, not a delivery target. |
| Done | The question is answered in one line and the decision is folded into the real work. |

## Inputs

- Question (required): the design question being answered, drawn from the user's prompt or surrounding code. If the question is genuinely ambiguous and the user is reachable, ask before routing.