I get what you're trying to do, but the first impression I get when opening the site is "this site is asking for credentials to connect to my database for me".

I get what you're trying to do, but the first impression I get when opening the site is "this site is asking for credentials to connect to my database for me". It doesn't have the look of a "quick utility" website to generate a command. I like crontab.guru as an example of a "quick utility" site that I go to frequently with an intuitive UX. I think if your site had the "generated command" front-and-center, maybe even pre-generated with a command already, the site's goal might feel more obvious upfront.