Build a form validation playground
Test validation timing and messaging interactively instead of specifying it in prose.
What this prompt helps you do
An artifact with working validation, each error state, and the timing behaviour it uses.
When to use it
A form's validation rules are specified and their real feel has not been tested.
What to prepare
The goal, relevant source material, constraints, examples, and the decision or action this should support.
How to get a strong result
Test the timing as much as the wording; validation that fires too early is the most common source of frustration.
How to use this prompt
Replace each placeholder with accurate context. Paste the complete prompt into Claude, review the response critically, resolve important questions, and use it as a considered input to the next decision—not as an unchecked final answer.