{"uid":"cap_Mpj_HeH71gD1efx5k8In0","slug":"polymarket-odds-lookup-e19b1a53","name":"Polymarket Odds Lookup","description":"Live prediction market odds, implied probabilities and betting-market data from Polymarket — give a market id or slug, get each outcome with its probability (0-1), volume, liquidity and resolution status.","url":"https://x402-endpoints.onrender.com/polymarket/odds","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":["market"],"properties":{"market":{"type":"string","description":"Polymarket market id or slug, e.g. '2654605' or 'will-it-rain-tomorrow'"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"id":"2654605","slug":"wta-andreeva-vs-day-set-2","active":true,"cached":false,"closed":false,"source":"Polymarket Gamma API (gamma-api.polymarket.com)","volume":"99.98","end_date":"2026-07-01T11:30:00Z","outcomes":[{"name":"Andreeva","price":0.06,"probability":0.06},{"name":"Day","price":0.94,"probability":0.94}],"question":"Set 2 Winner: Andreeva vs Day","liquidity":"1426.8","timestamp":"2026-06-24T14:20:00Z","disclaimer":"Indicative market odds, not investment advice.","resolution_source":null}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":{"p10Cents":"5.0000","medianCents":"5.0000","p90Cents":"5.0000","minCents":"5.0000","maxCents":"5.0000","p95Cents":"5.0000","sampleCount":1,"varies":false,"failureChargeRate":1},"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_jmMTqorAeDyHmquF3YRfq","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches real-time prediction market odds and probabilities for a specific Polymarket market by ID or slug","exampleAgentPrompt":"What are the current Polymarket odds for the market 'will-it-rain-tomorrow' — give me each outcome's probability and the total liquidity?","exampleUseCases":null,"resultDescription":"Returns a structured JSON object with the market question, active/closed status, list of outcomes with names, prices, and probabilities, total liquidity, trading volume, end date, and a timestamp. Also indicates whether data was served from cache and names the source (Polymarket Gamma API). Includes a disclaimer that odds are indicative and not investment advice.","failureModes":["Invalid or non-existent market ID/slug returns an error or empty result","Market may be closed or resolved, returning closed:true with no live odds","Polymarket Gamma API upstream downtime causes fetch failure","Stale or cached data may not reflect the most recent trades if cached:true","Payment failure (insufficient USDC balance) blocks the request entirely before any data is returned"],"whenToPreferThis":"Use this endpoint when you need real-time, structured prediction market probabilities from Polymarket for a specific known market ID or slug. Prefer this over manual web scraping when you need machine-readable probabilities, liquidity, and volume data for downstream agent decisions such as risk assessment or event probability weighting.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:45:32.045Z","isFirstParty":false}