{"uid":"cap_RtPpFGBy1-do1DFrXjZjc","slug":"polymarket-top-25-prediction-markets-feed-06fb2c58","name":"Polymarket Top 25 Prediction Markets Feed","description":"Top Polymarket prediction markets RIGHT NOW: the 25 highest-volume open markets with live odds (outcome probabilities), best bid/ask, spread, last trade price, 24h + total volume, liquidity, 1d/7d price change, end date and event link. Flat JSON, refreshed every 5 minutes. Prediction market odds, Polymarket data, event probabilities, market sentiment. $0.001 per call.","url":"https://x402.ottoai.services/pm-markets","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"data":{"venue":"polymarket","markets":[{"url":"https://polymarket.com/event/fed-decision-in-july-181","slug":"will-the-fed-cut-rates-in-july","spread":0.01,"bestAsk":0.89,"bestBid":0.88,"endDate":"2026-07-29T00:00:00Z","marketId":"516710","outcomes":[{"outcome":"Yes","probability":0.885},{"outcome":"No","probability":0.115}],"question":"Will the Fed cut rates in July?","eventTitle":"Fed Decision in July?","conditionId":"0x86f5b0f1934bb39421651ad2ba0f04494700ba9e95663a5c141a8674c4978c15","liquidityUsd":3395614.54,"volume24hUsd":4821055.2,"lastTradePrice":0.885,"volumeTotalUsd":48348772.09,"oneDayPriceChange":0.015,"oneWeekPriceChange":0.0725}],"generatedAt":"2026-07-10T12:00:00.000Z","marketCount":25,"totalVolume24hUsd":92401882.4},"meta":{"degraded":false,"validUntil":"","generatedAt":"","stalenessSec":0},"status":"success"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_9CpNxh68yttm3zuvuS7jt","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the 25 highest-volume open Polymarket prediction markets with live odds, bid/ask, volume, liquidity, and price change data, refreshed every 5 minutes.","exampleAgentPrompt":"Pull up the top Polymarket prediction markets right now — I want to see the 25 highest-volume open markets with their current odds, bid/ask spreads, and how prices have moved over the past day and week.","exampleUseCases":null,"resultDescription":"A flat JSON object with status, meta (including generatedAt timestamp), and data array containing up to 25 market entries — each with market name, outcome probabilities, best bid, best ask, spread, last trade price, 24h and total volume, liquidity, 1-day and 7-day price change, end date, and a direct link to the event on Polymarket. Data is cached and refreshed every 5 minutes.","failureModes":["Payment failure: 402 response if USDC micropayment not included or insufficient","Stale data: cache may be up to 5 minutes old during refresh cycle","Empty data: no markets returned if Polymarket API is unreachable","Service outage: 5xx if underlying data pipeline is down"],"whenToPreferThis":"Use this endpoint when you need a broad, curated snapshot of the most active Polymarket prediction markets across all topics (politics, sports, crypto, etc.) with full market microstructure data. Prefer the sibling crypto-specific Polymarket endpoint if you only care about BTC/ETH/crypto markets. Prefer this endpoint over manually scraping Polymarket when you need structured, machine-readable odds and volume data in a single call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:47:11.838Z","isFirstParty":false}