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The Oracle page shows a market’s Index Price as it’s calculated, live.

What it shows

  • Index price: the average of the included sources, after outliers are excluded. It updates every second.
  • Mark price, the premium of the mark over the index, and the funding rate per hour.
  • Spread of included sources: how closely the exchanges agree.
  • Last 60 seconds: the index and each source’s price, with included and excluded sources marked.

Sources

The Sources table lists every source exchange, included ones first, then by distance from the index. Each shows its price, its distance vs index, and its status: included or excluded. Constituent exchanges shows the ten spot exchanges the help centre lists, with the ones currently in the index highlighted. Events lists sources moving in or out of the index while the page is open.

Why exclude outliers?

So one venue with a flash crash, an outage or a manipulated print can’t drag the index. A feed that fails the check drops out before the average is taken. See Index Price for the method.

Choosing a market

Pick any market from the selector. The page also names the WebSocket category it reads, if you want the same data in your own code. See API Usage Examples.
The Mark Price is built on top of the index. If a position’s P/L looks surprising, check the index here first.