{"uid":"cap_DGGM0QdeAczIEaEdfxZzs","slug":"polymarket-midpoint-price-409b8e29","name":"Polymarket Midpoint Price","description":"Midpoint price (implied probability, 0-1) for a Polymarket outcome token from the live order book. Free Polymarket CLOB data. token_id from polymarket-market-detail.","url":"https://proxy.suverse.io/v1/data/polymarket-midpoint-price","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":{}},"type":{"type":"string","const":"http"},"method":{"enum":["POST","PUT","PATCH"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":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":null,"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_pStW3FRmG3lY3_DML9fTV","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":"Returns the midpoint price (implied probability 0–1) for a Polymarket outcome token from the live CLOB order book","exampleAgentPrompt":"What's the current implied probability for Polymarket outcome token 71321057495192610898174985455085197958934673310580272847596498780490842282082? I need the midpoint price from the live order book.","exampleUseCases":[{"title":"Check election outcome probability","prompt":"What's the live Polymarket probability right now for the 'Yes' outcome on the 2024 US presidential election market? Give me the midpoint price for token ID 71321057495192610898174985455085197958934673310580272847596498780490842282082."},{"title":"Monitor a sports prediction market","prompt":"I want to know the current implied odds from Polymarket's order book for whether the Chiefs win the Super Bowl — can you pull the midpoint price for that outcome token?"},{"title":"Arbitrage probability check","prompt":"Pull the live Polymarket midpoint price for both the Yes and No tokens on this crypto price prediction market so I can see if there's a mispricing — token IDs are 12345 and 67890."}],"resultDescription":"A numeric midpoint price between 0 and 1 representing the implied probability of the outcome, derived from the live Polymarket CLOB order book (mid-point between best bid and best ask).","failureModes":["Invalid or unknown token_id returns an error or empty result","Stale or illiquid markets may have wide spreads making the midpoint less reliable","Payment failure (x402) if USDC balance is insufficient","Network or Polymarket API downtime causing fetch failure"],"whenToPreferThis":"Use this endpoint when you need a real-time, live order-book-derived probability for a specific Polymarket outcome token and already have the token_id (obtainable from polymarket-market-detail). Prefer this over scraping Polymarket's UI or using cached data sources when you need the freshest possible implied probability for trading, monitoring, or display purposes.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T13:06:34.179Z","isFirstParty":false}