STX runs as a standard second price auction. STX selects the highest winning bidder based on the highest net bid submitted. The auction process may result in adjustments of the submitted bid price at the exchange’s discretion, but a winning bid will never be charged more than the amount submitted.
The exchange runs on a CPM basis.
Responses must be received within 120ms per auction, or will otherwise be considered to have timed out. High rates of timeouts or other errors may result in receiving a lower frequency of bid requests.
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