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A Combo or parlay is one combined obligation. Its payout is not the sum of independent leg payouts. Rook analyzes listed Combos and newly composed tickets using supported venue settlement rules.

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Compose an analytical market

POST /markets:compose requires at least two selected legs, a venue and a supported settlement_convention_id.
The convention above is illustrative. An integration must select an actually supported venue/product convention; there is no default product-of-legs assumption.

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Keep exceptional settlements

Voids, cancellations, pushes and product-specific exceptions can change how a ticket pays. Unsupported rules fail explicitly. Relationship findings can explain impossible or redundant legs under the supported scope. The response returns a private analytical market for your account, coverage, versions and findings. It does not fabricate a venue listing, create a tradable instrument at the venue or submit an order.

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Cross-family tickets

When a Combo couples several families, its columns use compatible joint scenario tuples. It is not duplicated into separate additive family rows. Exact extrema and vectors require supported bounded joint analysis; oversize or unsupported scope is rejected explicitly. Use the resulting outcome reference in payout queries or candidate evaluation, then pass quoting and execution to your desk’s venue or broker integration.