{"uid":"cap_r5K16TRnXQZdhHJB0TtsO","slug":"vextorium-polymarket-events-42b7d1a9","name":"Vextorium Polymarket Events","description":"Polymarket events with all their markets: elections, Fed decisions, sports, crypto... Each event with the probability of every option (candidate, rate range, team), volume and close date; top by volume or matching a search.","url":"https://api.vextorium.com/v1/polymarket-events?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"required":[],"properties":{"limit":{"type":"integer"},"search":{"type":"string"}}},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":["object","null"],"properties":{"note":{"type":["string","null"]},"events":{"type":["array","null"],"items":{"type":["null","object"],"properties":{"link":{"type":["null","string"]},"slug":{"type":["null","string"]},"close":{"type":["null","string"]},"event":{"type":["null","string"]},"markets":{"type":["array","null"],"items":{"type":["null","object"],"properties":{"slug":{"type":["null","string"]},"option":{"type":["null","string"]},"volume_usd":{"type":["null","number"]},"probability_yes_pct":{"type":["null","number"]}}}},"num_markets":{"type":["null","number"]},"volume_24h_usd":{"type":["null","number"]},"total_volume_usd":{"type":["null","number"]}}}},"search":{},"source":{"type":["string","null"]}}}}}}},"responseSchema":{"type":"json","example":{"note":"Probabilities implied by the market price; they are not guaranteed predictions.","events":[{"link":"https://polymarket.com/event/brazil-presidential-election","slug":"brazil-presidential-election","close":"2026-10-05T03:59:00Z","event":"Brazil Presidential Election","markets":[{"slug":"will-flvio-bolsonaro-win-the-2026-brazilian-presidential-election","option":"Flávio Bolsonaro","volume_usd":13676392,"probability_yes_pct":56.95},{"slug":"will-luiz-incio-lula-da-silva-win-the-2026-brazilian-presidential-election","option":"Luiz Inácio Lula da Silva","volume_usd":14053722,"probability_yes_pct":43.5}],"num_markets":32,"volume_24h_usd":2719744,"total_volume_usd":162530742},{"link":"https://polymarket.com/event/fed-decision-in-october-20260617190323537","slug":"fed-decision-in-october-20260617190323537","close":"2026-10-29T03:59:00Z","event":"Fed Decision in October?","markets":[{"slug":"will-there-be-no-change-in-fed-interest-rates-after-the-october-2026-meeting-20260617190324031","option":"No change","volume_usd":7162734,"probability_yes_pct":82.5},{"slug":"will-the-fed-increase-interest-rates-by-25-bps-after-the-october-2026-meeting-20260617190324032","option":"25 bps increase","volume_usd":6115654,"probability_yes_pct":17.5}],"num_markets":5,"volume_24h_usd":2232441,"total_volume_usd":24244124}],"search":null,"source":"Polymarket"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.004","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_zJF_azYhJVCq1_6ToI2ME","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches current Polymarket prediction market events with market options, probabilities, and trading volumes","exampleAgentPrompt":"What does Polymarket currently predict for the Fed's interest rate decision in October? Show me the top 5 events and their yes/no probabilities.","exampleUseCases":[{"title":"Election odds research","prompt":"What are the current Polymarket odds for the 2026 Brazil presidential election? I want to see which candidates are leading and what percentage chance the market gives each of them."},{"title":"Fed rate decision monitoring","prompt":"Pull the latest Polymarket prediction market data on the Fed's next interest rate decision — I want to see the probability of a rate cut, hold, or hike and how much volume has traded."},{"title":"Crypto event discovery","prompt":"Search Polymarket for any active prediction markets related to crypto or Bitcoin and give me the top 5 by trading volume with their current probabilities."}],"resultDescription":"Returns a list of Polymarket prediction market events, each with the event name, URL slug, closing date, link to Polymarket, and an array of individual market options showing the option label, slug, USD trading volume, and implied probability (as a yes percentage). Also includes total volume, 24-hour volume, number of markets per event, and a disclaimer that probabilities are market-implied, not guaranteed predictions.","failureModes":["No events found for a very narrow or obscure search term","Search query returns unrelated events due to loose text matching","Stale probability data if Polymarket feed is delayed","Rate limit or payment failure (USDC x402 payment rejected)","Empty result set if search parameter matches nothing"],"whenToPreferThis":"Use this endpoint when you need live Polymarket prediction market data — event probabilities, trading volumes, and market options — especially for political, economic, or crypto events. Prefer this over scraping Polymarket directly, or when you need structured JSON output suitable for downstream agent reasoning about crowd-sourced event probabilities.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T18:51:44.826Z","isFirstParty":false,"canonicalSlug":"vextorium-polymarket-events-42b7d1a9"}