{"uid":"cap_M565qYNB2P6EJXDmF8ibW","slug":"polymarket-markets-feed-via-agentutility-1a29b30a","name":"Polymarket Markets Feed via AgentUtility","description":"Polymarket markets / prediction market data / Polymarket API / list active prediction markets / crypto-settled betting odds / event odds / Polymarket browse. Pulls live Polymarket markets from gamma-api with filter by category, tag, free-text query, minimum liquidity. Returns market question, current YES/NO outcome prices (implied probabilities), 24-hr volume, liquidity, end date. DATA-ONLY — no trading. Useful for agent forecasting research and arbitrage detection.","url":"https://x402.agentutility.ai/polymarket-markets","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"properties":{"tag":{"type":"string","description":"Polymarket tag slug filter, passed through to upstream."},"limit":{"type":"number","description":"1-100. Default 20."},"order":{"enum":["volume24hr","liquidity","endDate","startDate"],"type":"string","description":"Sort field."},"query":{"type":"string","description":"Free-text filter applied to question + description + slug. Case-insensitive substring match against the current page."},"active":{"type":"boolean","description":"Default true. Pass false to include inactive markets."},"closed":{"type":"boolean","description":"Default false. Pass true to include closed markets."},"offset":{"type":"number","description":"Pagination offset."},"category":{"type":"string","description":"Filter by Polymarket category (substring match, e.g. 'Sports', 'Crypto', 'Politics')."},"ascending":{"type":"boolean","description":"Sort direction."},"min_liquidity":{"type":"number","description":"Minimum liquidity in USD."}}},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"count":{"type":"integer"},"markets":{"type":"array","items":{"type":"object","properties":{"id":{"type":"string"},"slug":{"type":"string"},"end_date":{"type":"string"},"outcomes":{"type":"array","items":{"type":"string"}},"question":{"type":"string"},"liquidity_usd":{"type":"integer"},"outcome_prices":{"type":"array","items":{"type":"number"}},"volume_24hr_usd":{"type":"integer"}}}},"attribution":{"type":"string"}}}}}}},"responseSchema":{"type":"json","example":{"count":10,"markets":[{"id":"12345","slug":"will-x-happen-by-y","end_date":"2026-12-31T12:00:00Z","outcomes":["Yes","No"],"question":"Will X happen by Y?","liquidity_usd":12000,"outcome_prices":[0.42,0.58],"volume_24hr_usd":50000}],"attribution":"Data: Polymarket gamma-api. https://polymarket.com"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.005/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_JMOSkY7HJ4NL5_SGlnFdE","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches live Polymarket prediction market data including YES/NO prices, liquidity, volume, and end dates with optional filtering by category, tag, query, or minimum liquidity","exampleAgentPrompt":"Pull the top active Polymarket prediction markets about the 2024 US election with at least $50k liquidity and show me the current YES/NO prices and implied probabilities.","exampleUseCases":[{"title":"Election forecasting research","prompt":"Show me all active Polymarket markets related to the 2024 US presidential election, filtered to those with at least $100k in liquidity, and give me the current YES and NO prices so I can see implied win probabilities."},{"title":"Crypto event arbitrage detection","prompt":"Find Polymarket prediction markets in the crypto category with over $20k liquidity and show me the 24-hour volume and current odds — I want to spot any that look mispriced compared to my own estimates."},{"title":"Upcoming market expiry monitoring","prompt":"Browse Polymarket markets tagged 'economics' that are closing within the next two weeks and have some liquidity — I want to see the current YES/NO prices and end dates so I can track what's about to resolve."}],"resultDescription":"Returns a list of active Polymarket prediction markets, each containing the market question, current YES and NO outcome prices (as implied probabilities between 0 and 1), 24-hour trading volume, total liquidity, and market end/resolution date. Results are filtered according to any supplied category, tag, free-text query, or minimum liquidity parameters.","failureModes":["Gamma API unavailable or rate-limited — returns error with no market data","No markets match the supplied filters — returns empty result set","Invalid or unrecognized category/tag value — may return empty or unfiltered results","Minimum liquidity filter set too high — returns no results if no markets qualify","Payment failure via x402 protocol — request not processed"],"whenToPreferThis":"Choose this endpoint when you need live Polymarket prediction market data including current YES/NO prices and liquidity metrics without executing any trades. Prefer it over scraping Polymarket directly for structured, filtered, agent-ready data. Best suited for forecasting research, probability tracking, arbitrage signal detection, and market monitoring workflows where real-time odds from Polymarket's gamma-api are needed in a programmatic form.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T07:13:29.950Z","isFirstParty":false}