hi! i'm sorry that you feel that way.
we're aware of the guidelines and thought about it. we decided to go with "Show HN:" for 2 reasons:
1- The API can be tried, the curl examples can be pasted and they work
2- looking at past examples (such as EasyPost), they seem to follow our pattern
for these reasons we didn't see a problem with using the "Show HN" tag :)