Thanks, oh I see, Cypher acts as a context selector.
ThoughtDAG addresses the same issue but uses a visual approach: it searches for nodes first, then uses connections or references to determine which content enters the request. I'd love to see how it compares to writing Cypher directly, especially after conversations start branching and merging, if you get a chance to try it.
(prompt)-[:NEXT]->(response)
and can choose a given context by using a path query
MATCH p = (:prompt{id:<>})-[:NEXT*]->(:response{id:<>}) RETURN p
and extract the text from the nodes and format it as the API requires.