I vibe coded
https://domainhq.ai entirely in a few days with Opus, as in, this was a secondary focus and I never bothered to write any specs. Halfway through I had to ask it to convert it all to React because it was vanilla HTML and I didn't realize (that is not a flex).
I have a .ai domain that I feel is somewhat premium, and seemed to be getting lowball offers from domain brokers. And those I spoke to didn't seem like they were very up-to-date with market news and trends. Exploring services like Namebio were very limited and expensive; the subscription usage for building this was less than the price of a monthly membership (the domain is a different story!).
Domainhq.ai suggested its own domain to buy with its brainstorm feature, and tracks domain sales and expired domains, with reports generated by Claude as it perpetually analyzes price history over time.
The domain was a bit of an investment but I do like it, and the app itself is running 24-7 on a spare Macbook I wasn't using, so I plan to host it myself without paying for cloud servers, and the LLM features are using my personal subscription rather than API credits.
I do plan to add registrations and paid subscriptions (at a fair price, and will make things robust then); I get the irony here, but I also encourage anybody else who needs a niche tool to play around with their own vibe coding sessions to get something usable. Stuff like this does make me question the longevity of tech as a stable career.