Appreciate everyone's honest feedback here. The consensus is clear: watermarking isn't painful enough to justify an API, especially when Sharp + ChatGPT solves it in 10 minutes, and the no-code market I described doesn't actually want API integration.

This was a 7-hour validation experiment and it worked — I learned the idea doesn't have product-market fit. Killing it now rather than spending weeks marketing something nobody wants.

Thanks for the reality check :)

On to the next one.