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A parlay is a multi-leg bet. There is no standing parlay orderbook. A bettor picks their legs, and the request is broadcast. Market makers price it inside a 3-second window. The bettor then has a minute to take one of the resulting quotes.

Parlay markets are real markets

Once it exists, a parlay market is an ordinary market. It has its own marketHash and behaves like every other market on the exchange. You post an ordinary signed order to it, you choose outcome one or outcome two, and you cancel it the same way. The difference is that a parlay market has legs — an array of underlying single markets and the outcomes the bettor selected for each.

The flow

The request

Makers receive this on the parlay_markets:global channel:
The top-level marketHash is the parlay parent — the market you post orders against. Each entry in legs names an underlying market and which side of it the parlay needs. The full field list (including the requestorId pseudonym) and looking up each leg via GET /markets/find are on Market making parlays.

Betting a parlay

You post an ordinary order on the parlay parent hash — nothing about signing is parlay-specific. See Market making parlays for the field-by-field walkthrough and working code. A parlay taker uses FOK orders only

How a parlay settles early

One VOID leg voids the whole parlay. If any leg is reported void, the parlay is void and everyone gets their stake back. A non-VOID leg going against the parlay decides it early. When one leg is reported as a loss, the parlay cannot win.

Parlay early refunds

Parlay bets are eligible for early capital-efficiency refunds — you can get the stake on a decided position back before the whole parlay has finished settling. A parlay can end one of a few ways: it wins, it loses, or it is voided if any leg comes back void. The early refund kicks in the moment a reported leg takes loss off the table for one side. Once that side can only end up winning or getting voided, it can no longer lose its stake, so the stake is returned right away without waiting for the remaining legs to report. Which side that is depends on what you backed. If you bet against the parlay and one leg goes against it, the parlay can no longer win, so your stake comes back early — and the same in reverse, where whoever is now guaranteed not to lose is refunded as soon as the outcome is locked in. This only returns the stake on the position that’s already decided. Any remaining legs keep reporting, and the parlay finishes settling in the usual way.

Parlay vs single bets

Fees

Parlays use separate rates — makerParlayPayoutFee and takerParlayPayoutFee — at GET /user/fees-v3.

Market making parlays

Listening, pricing and quoting inside the 3-second window.

Parlay requests channel

The request payload, and the window it opens.

Parlay markets

The fields and behaviour of parlay markets.

Time in force

GTC, IOC and FOK, and which of them a parlay accepts.
Last modified on August 11, 2026