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GET
Historical top of book
Lightweight timeseries of best bid, best ask, mid, and spread. Same data as the orderbook endpoint but without the full level arrays. Ideal for charting price history.

Parameters

string
required
Kalshi market ticker (e.g., KXFEDDECISION-26APR-H0).
integer
Start time in Unix ms. Omit with end_time to get latest data.
integer
End time in Unix ms. Omit with start_time to get latest data.
string
default:"1m"
Snapshot interval: 1m or 5m.
integer
default:"100"
Max rows per page (1-200).
string
Cursor from previous response for next page.

Example

Response

best_yes_bid and best_yes_ask are null when the book had no resting orders at sample time. Filter client-side if you only want quoted snapshots.