A skill is a document your agent reads and then acts on. 178 of them here — copy one to the clipboard for any agent you use, or install it straight into an agent in the 00 app.
A skill teaches your agent to do something. An AI App gives that work a screen the two of you share.
A prompt template is the wording, not a screen: a New Session entry with blanks you fill in — a folder, a date, a few words — and the agent takes it from there.