{"uid":"cap_dwi-18zKLyNqyEx6FQRw8","slug":"vextorium-polymarket-markets-c5a34314","name":"Vextorium Polymarket Markets","description":"558 pay-per-call data APIs for AI agents: Solana and EVM on-chain data, tokenized stocks, DeFi, Hyperliquid, economy and official statistics, FX, validation, web and developer tools. Pay in USDC via x402.","url":"https://api.vextorium.com/v1/polymarket-markets?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"limit":{"type":"integer"},"order":{"enum":["volume","liquidity","close"],"type":"string"},"search":{"type":"string"}}},"responseSchema":{"type":"json","example":{"note":"Probabilities implied by the market price; they are not guaranteed predictions. Source: Polymarket.","order":"volume","search":null,"markets":[{"id":"4720686","link":"https://polymarket.com/market/unl-bel-tur-2026-10-02-bel","slug":"unl-bel-tur-2026-10-02-bel","close":"2026-10-02T18:45:00Z","results":[{"option":"Yes","probability_pct":95.5},{"option":"No","probability_pct":4.5}],"question":"Will Belgium win on 2026-10-02?","change_24h":0.32,"liquidity_usd":60172,"volume_24h_usd":2587928,"total_volume_usd":2641418},{"id":"5180164","link":"https://polymarket.com/market/dota2-og-bb4-2026-10-02","slug":"dota2-og-bb4-2026-10-02","close":"2026-10-02T22:45:00Z","results":[{"option":"OG","probability_pct":91},{"option":"BetBoom Team","probability_pct":9}],"question":"Dota 2: OG vs BetBoom Team (BO3) - BLAST Slam Group C","change_24h":0.56,"liquidity_usd":55273,"volume_24h_usd":1136462,"total_volume_usd":1125844}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.004","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":"$0.004/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_68clUXff6evni9xaMcV4b","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches live Polymarket prediction market data including questions, probabilities, liquidity, and volume, with optional search and sorting.","exampleAgentPrompt":"Pull me the top 10 Polymarket markets sorted by volume and show me the current implied probabilities for each outcome.","exampleUseCases":[{"title":"Sports event outcome research","prompt":"Search Polymarket for prediction markets about the Champions League final and show me the current win probabilities for each team."},{"title":"Political event probability lookup","prompt":"What are the top Polymarket prediction markets about the 2026 US midterm elections right now? Sort by liquidity and show me the implied probabilities."},{"title":"Daily briefing on hot prediction markets","prompt":"Give me the 5 most active Polymarket markets by 24-hour volume today, including their questions, outcome probabilities, and how much the probabilities shifted in the last 24 hours."}],"resultDescription":"Returns a list of Polymarket prediction markets, each containing the market question, a direct link to the market, outcome options with implied probability percentages, 24-hour and total trading volume in USD, liquidity in USD, 24-hour probability change, and the market close timestamp. Also echoes back the sort order and any search query used.","failureModes":["Invalid sort order enum value returns validation error","Limit set too high may return empty or truncated results","Search query with no matches returns empty markets array","Polymarket API downtime causes upstream data unavailability","Malformed request body results in HTTP 400"],"whenToPreferThis":"Use this endpoint when you need real-time Polymarket prediction market data — questions, crowd-implied probabilities, volume, and liquidity — for sports, politics, crypto, or any other event. Prefer this over general web search when you need structured, machine-readable probability data directly from Polymarket's markets rather than news articles or commentary about them.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-28T12:39:13.668Z","isFirstParty":false,"canonicalSlug":"vextorium-polymarket-markets-c5a34314"}