{"uid":"cap_dT_4I5WDBrscNwjNdPLw7","slug":"prediction-market-event-multi-outcome-polymarket-db43cd73","name":"Prediction Market Event (Multi-Outcome) – Polymarket","description":"A full multi-outcome Polymarket event (e.g. every candidate in an election) as one ranked probability list, by exact event slug -- instead of stitching together each candidate's individual binary market via /prediction-markets search. Polymarket-only. $0.01/call.","url":"https://www.x402financialdata.com/prediction-market-event/:slug","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"pathParams":{"type":"object","required":["slug"],"properties":{"slug":{"type":"string","description":"Polymarket event slug, e.g. next-prime-minister-of-ethiopia"}}},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_JIHmGAVCjN4KKjZtEDeE3","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a ranked probability list of all outcomes for a multi-outcome Polymarket event (e.g. all candidates in an election) given the event slug.","exampleAgentPrompt":"Pull the full ranked probability list for every candidate in the next-prime-minister-of-ethiopia Polymarket event — I want all outcomes in one go, not individual binary markets.","exampleUseCases":[{"title":"Election odds overview for research","prompt":"Give me the current Polymarket probabilities for every candidate in the 2024 US presidential election — I need the full ranked list from the event slug 'presidential-election-winner-2024'."},{"title":"Monitoring a multi-outcome policy vote","prompt":"What are the odds on each possible outcome for the next Fed interest rate decision on Polymarket? Fetch the full ranked list from the event slug 'fed-rate-decision-march-2025'."},{"title":"Comparing candidates in a foreign election","prompt":"Show me all the ranked probabilities for who becomes the next UK Prime Minister on Polymarket using the event slug 'next-uk-prime-minister'."}],"resultDescription":"A ranked list of all outcomes for the specified Polymarket event, each with its current implied probability, ordered from most to least likely. Includes event-level metadata such as the event title and slug. Replaces the need to call individual binary markets and stitch them together manually.","failureModes":["Invalid or misspelled event slug returns a 404 or empty result","Event slug refers to a binary market rather than a multi-outcome event, returning incomplete data","Polymarket event has been resolved or delisted, returning stale or no data","Rate limiting or payment failure results in a 402 or 429 error","Slug format mismatch (e.g. using spaces instead of hyphens) causes lookup failure"],"whenToPreferThis":"Use this endpoint when you need a single, unified probability ranking across all outcomes of a multi-outcome Polymarket event — such as elections with many candidates — and want to avoid manually fetching and aggregating individual binary markets via a search endpoint. Prefer this over the /prediction-markets search route when you already know the exact event slug and need a clean ranked list in one call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:45:04.675Z","isFirstParty":false}