Promptski was a web app designed to help users write better prompts. You'd paste in a rough prompt, and the tool would suggest improvements to make it clearer, more specific, and more likely to produce the output you wanted.
The project explored the meta-problem of prompt engineering: how do you write a good prompt when you're still learning what makes prompts work? Promptski aimed to bridge that gap by providing actionable suggestions rather than abstract advice.
The deployment is currently offline. The source code remains available on GitHub for anyone interested in the approach.