Is your prompt good enough to build from?

Almost always because the prompt left a gap and the tool filled it with a guess. The eight things this checker looks for are the eight gaps that get guessed at most often: who it is for, the one thing it must do, the screens, what it saves, accounts, what to leave out, working in steps, and telling it you are not a developer.

Whether your prompt contains the eight things a build tool needs, minus points for vague filler words and for being too short to be specific. It cannot tell you whether your idea is any good. That part is still yours.

No. The check runs entirely in your browser using pattern matching, not a model. Nothing you paste leaves your computer, and there is no sign-up.

Add a sentence saying what not to build, and a sentence asking the AI to describe its plan back to you before writing any code. Those two lines prevent more wasted afternoons than everything else combined.