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Market, outcome, listing

Settlement-equivalent venue listings share canonical market and outcome identities. Prices, position attribution and execution provenance remain listing-specific.

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Equivalence requires matching rules

Matching titles are insufficient. Measurement, source, observation window, boundary conditions and exceptional settlements must agree. A difference in any settlement-relevant rule preserves separate canonical identities. Amendments retain historical mapping and settlement versions. GET /markets?market_id=mkt_fed_dec_2026_cut returns the market’s settlement summary, payout conditions, outcome IDs, listings and family references in items. Add include=EVIDENCE for the supporting settlement evidence. Omit market_id to browse or search markets through the same endpoint.

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Select a side explicitly

An analytical instrument reference supplies exactly one of:
A listing reference also preserves venue identity. An event or market alone cannot silently select YES. NO has its own payout vector; it is not a negative YES holding. Native IDs remain exact text, including long numeric token identifiers. Resolve supported native identity tuples through POST /markets:resolve.

Browse markets

Search by event, family, venue, category or explicit market IDs.