{"uid":"cap_fE823BLlUjG_3uG-bDZq3","slug":"speccy-x402-polymarket-top-markets-d0b9939f","name":"Speccy x402 — Polymarket Top Markets","description":"Top Polymarket prediction markets by 24h volume. Returns up to 50 markets with id, question, slug, volume, volume24hr, liquidity, endDate, outcomes and outcomePrices.","url":"https://api.speccy.cloud/v1/predictions/polymarket","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"],"type":"string"},"queryParams":{"type":"object","properties":{"sort":{"enum":["volume","liquidity","startDate"],"type":"string","default":"volume","description":"Sort field"},"limit":{"type":"integer","default":20,"maximum":50,"minimum":1,"description":"Number of markets (1-50, default 20)"}}}},"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_Jo_7MtldxA8bLfPnsIXI4","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 up to 50 top Polymarket prediction markets ranked by 24h volume, liquidity, or start date, with prices and outcomes.","exampleAgentPrompt":"Show me the top 30 Polymarket prediction markets sorted by 24-hour volume, including their current outcome prices and liquidity.","exampleUseCases":[{"title":"Daily prediction market briefing","prompt":"What are the 20 most actively traded Polymarket markets in the last 24 hours? Show me the questions, outcome prices, and how much liquidity each one has."},{"title":"Finding most liquid markets for trading","prompt":"Which Polymarket prediction markets have the highest liquidity right now? Give me the top 50 sorted by liquidity so I can find the best markets to trade."},{"title":"Tracking trending political or event bets","prompt":"What questions are people betting on most on Polymarket today? Pull the top 25 markets by 24h volume and show me the current yes/no prices for each."}],"resultDescription":"A JSON list of up to 50 Polymarket prediction markets, each containing the market id, question text, URL slug, total volume, 24-hour volume, liquidity, end date, outcome labels (e.g. Yes/No), and current outcome prices as probabilities.","failureModes":["Payment failure: x402 payment of $0.01 USDC not completed or invalid — request rejected","Invalid sort parameter: value outside allowed enum (volume, liquidity, startDate) returns validation error","Limit out of range: value below 1 or above 50 returns validation error","Polymarket data unavailable: upstream API outage may return empty or partial results","Network timeout: slow upstream response from Polymarket data source"],"whenToPreferThis":"Use this endpoint when you need a ranked snapshot of the top Polymarket prediction markets by trading activity, liquidity, or recency — especially useful for market monitoring, trading research, or surfacing trending forecasting questions. Prefer this over scraping Polymarket directly or building your own aggregation; it delivers structured, ready-to-use data including outcome prices for up to 50 markets in a single call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:36:33.231Z","isFirstParty":false}