{"uid":"cap_kces01YDYskwL00-h8_Eq","slug":"polymarket-trending-markets-by-tag-20521122","name":"Polymarket Trending Markets by Tag","description":"Top Polymarket prediction markets by 24h volume. Tags: crypto, sports","url":"https://oussapi.duckdns.org/api/v1/polymarket/trending","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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":["tag"],"properties":{"tag":{"type":"string","description":"Market tag: crypto or sports"},"limit":{"type":"integer","description":"Max markets (1-25)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_U9Pm2zfQZ2VvAwCrkddeQ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the top Polymarket prediction markets ranked by 24-hour trading volume, filtered by tag (crypto or sports)","exampleAgentPrompt":"What are the top 10 trending crypto prediction markets on Polymarket right now by 24-hour volume?","exampleUseCases":[{"title":"Trending sports betting markets today","prompt":"Which sports prediction markets are people betting on the most on Polymarket right now? Show me the top ones by volume in the last 24 hours."},{"title":"Hottest crypto markets on Polymarket","prompt":"What are the hottest crypto prediction markets on Polymarket today? I want to see what people are trading the most in the last 24 hours."},{"title":"Most active Polymarket markets overview","prompt":"Give me a rundown of the most active sports markets on Polymarket right now — I want to know where all the action and liquidity is today."}],"resultDescription":"A ranked list of up to 25 Polymarket prediction markets (filtered by 'crypto' or 'sports' tag) sorted by 24-hour trading volume, including market titles and volume-related metadata.","failureModes":["Missing required 'tag' query parameter returns an error","Invalid tag value (anything other than 'crypto' or 'sports') returns an error","Limit out of range (less than 1 or greater than 25) returns a validation error","Upstream Polymarket API unavailability causes fetch failure","Payment of 0.005 USDC not included or rejected causes 402 response"],"whenToPreferThis":"Use this endpoint when you need real-time trending Polymarket prediction market data filtered specifically by crypto or sports category and ranked by recent 24-hour volume. Prefer this over general market search when you want the most active/liquid markets in a specific tag rather than searching by keyword or event.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T17:26:34.135Z","isFirstParty":false}