Sort:  

I have a feeling that I saw something which said that the authors of posts that are being submitted to @humanbot should have a reputation at or below 55. Is that true or am I getting it mixed up with the 45 or lower rep requirement of @thehumanbot?

there is no REP requirement or any other requirement except that it not be self promotion as far as dropping links off at @humanbot. You may have been confusing it with @thehumanbot, which as I mentioned, is perfectly understandable. The names are confusingly similar