Whether this distinction is relevant is up to you, but I think we can safely say agents do not lie in the human sense of the word, because they don't intend to deceive (in fact, they aren't capable of "intending" anything in the human sense of the word, much like a BASIC program doesn't "intend" to PRINT "HELLO WORLD").

Our very human minds can perceive intent, because that's what we humans do, which is unrelated to what the agent is actually doing.