{"uid":"cap_lf6Fm_ElVD-91ZgxPUyfX","slug":"openrelay-polymarket-markets-69f6fa93","name":"OpenRelay Polymarket Markets","description":"List active Polymarket prediction markets, sortable by volume or liquidity. Returns question, prices, outcomes, end date.","url":"https://openrelay.hggfffdfy687.workers.dev/tools/polymarket/markets","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"limit":{"type":"integer","default":20,"maximum":100,"minimum":1},"order":{"enum":["volume","liquidity"],"type":"string","default":"volume"},"active":{"type":"boolean","default":true}}},"responseSchema":{"type":"json"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_mX51LFAIFrBkjlqWMq-mE","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Lists active Polymarket prediction markets sortable by volume or liquidity, returning question text, outcome prices, and end dates.","exampleAgentPrompt":"Show me the top 50 active Polymarket prediction markets sorted by volume — include the question, current outcome prices, and closing dates.","exampleUseCases":[{"title":"Tracking hot political prediction markets","prompt":"What are the 20 most actively traded Polymarket markets right now? Sort them by volume and show me the questions and current odds."},{"title":"Finding liquid markets to trade","prompt":"Pull up the top 30 Polymarket markets sorted by liquidity so I can see which ones have the tightest spreads and best depth."},{"title":"Daily prediction market briefing","prompt":"Give me a rundown of the top 10 active Polymarket questions by volume today — show the outcomes, prices, and when each market closes."}],"resultDescription":"Returns a list of active Polymarket prediction markets, each with the market question text, possible outcome prices (e.g. YES/NO probabilities), end date, and trading volume or liquidity metrics. Up to 100 markets per call, defaulting to 20.","failureModes":["Invalid limit value (outside 1–100 range) returns a validation error","Invalid order enum value (not 'volume' or 'liquidity') causes a request error","Polymarket upstream outage may return empty results or a 5xx error","No active markets found returns an empty list"],"whenToPreferThis":"Use this endpoint when you need a live, ranked snapshot of Polymarket's active prediction markets — especially when you want to surface trending questions or find liquid markets to analyze. Prefer this over scraping Polymarket directly because it is structured, pay-per-call, and agent-friendly with a clean JSON response.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:37:17.407Z","isFirstParty":false}