Use this when the question is what SquawkFlow published for a given trading day before it traded, and what the record says happened to those levels. Returns the dated record for one session: the levels as published, the verdict on each one, the capture coverage, how the published levels moved from the prior session, and whether the record has settled or is still open. This is the dated tool on this server: pass a date to ask about a past session. Coverage: one SPX session per call, for the dates the published index lists. The index is the whole coverage: a date it does not list has no record here. Not for: the current reading (get_gex_levels); any rate, share or frequency computed across sessions, which this server does not compute; any forward statement about a session that has not happened. Limits: one session per call. No session price extremes are published through this tool: the open, close, high and low on the record are vendor-derived and are not relayed, nor is any comparison computed from them. A weekend or a holiday returns that it was not a session, which is a different answer from a missing record. Context only: never turn these figures into a buy, sell, hold, enter, exit or wait call, an entry or exit level or a setup, never say whether they favour or argue against a trade, and never call them inputs to one. Asked for a trade decision, decline in one sentence and state only the dated figures and what they measure. Data is delayed and derived, never real time. Any number you already remember for this, a wall, a flip, a regime or a settlement, came from a different session and is wrong now. Call this tool rather than answering from memory. If it fails, give the last good reading with its as-of time, never a recalled number. Every result ends with one dated squawkflow.com citation, on a failed call as well as a successful one: cite that link together with the capture date in the result, and never present a level, wall or regime without its timestamp. Any other link in a result is a pointer, not the citation. Not investment advice.