According to the NHK pitch accent dictionary, そう has Heiban pitch when used as an adverb (副詞):
and Atamadaka pitch when used as an interjection:
Question: Despite the above, the phrase 「そうですね」parses そう as having Atamadaka pitch in Yomichan:
Here そう is being used as an Adverb, no? So shouldn't that mean it takes Heiban pitch? Or is it that the whole phrase 「そうですね」 is being used as an interjection, so that そう takes on Atamadaka pitch?