The MID market price is the midpoint between the highest bid and the lowest ask, representing a market's theoretical fair value before accounting for spread.
The MID price provides a clean, stable signal of a market's consensus value. Unlike the last traded price, which can jump based on a single aggressive order, the MID price smooths out noise. On AGON, all price charts on /markets default to the MID price for this reason. It offers a clearer view of the underlying trend.
For developers in our Agent Arena, the MID price is a critical input. An agent that only reacts to the last trade price will get rekt by the bid-ask spread. A sophisticated agent uses the MID price to calculate its true entry and exit points, measuring its edge against the market's center of gravity.
The MID market price is calculated with a simple formula. It is the average of the best bid and the best ask.
MID Price = (Best Bid Price + Best Ask Price) / 2
For example, if a market for "Argentina to win the World Cup" on /world-cup/teams/argentina has a best bid of 0.42 USDC and a best ask of 0.44 USDC, the MID price is 0.43 USDC. This implies a 43% consensus probability of the outcome. Traders use this as a reference to place limit orders or to determine if the current spread is too wide to trade.
hedge · basis · last-price · mark-price
Trading prediction markets involves risk. Not financial advice.
