Cardano CLI Preprod Query UTXO Error

I just called it “playground”, because that’s what they call the thing I get without paying.

I really don’t know if their paid offers are meant to be used for production. I had the impression that it is more an exploration and development tool.

On the other hand: If it is not a huge hype, it probably does not use that much resources.

But still: all keys would be in their system, which is strange.

You say that you are not able to run a node yourself, but you do have a web server, where the website for that mint will be hosted?

Don’t know. You still seem to use cardano-cli. Since that only works locally over a Unix socket file, they would have to give you shell access. Not aware of any service that does that.

As said previously:

Write your application in JS without any callouts to cardano-cli. Use Blockfrost to query the blockchain and submit transactions. I’d run it on a server, but if you want you can also run it at home.