An assistant reading your rank history could tell you a keyword dropped. It could not tell you what you did that week.
The REST API and the MCP server now carry the notes and events of your charts. Five new MCP tools, thirty in all: list, add, change and delete a note, and compare your visibility or a keyword's rank before and after each note and app update, with any store algorithm update in the same days. The score and rank history endpoints return their events too, so an answer about a move comes with what may explain it.
In practice: tell your assistant you launched on Product Hunt today and it logs the note. Two weeks later, ask it what the launch did.