{"uid":"cap_k6NXIbCJcXaERqRx0dZfk","slug":"polymarket-crypto-up-or-down-markets-via-2s-io-74ff88ee","name":"Polymarket Crypto Up-or-Down Markets via 2s.io","description":"Polymarket crypto up-or-down markets — the recurring 'Will <asset> be up or down by <time>?' series for BTC, ETH, SOL, SPX and more (hourly/daily). Each event returns its question, dates, USD volume, and the nested Up/Down markets with live outcome prices (implied probability the asset closes higher). Filter count with limit. Read-only mirror of Polymarket's up-or-down tag.","url":"https://2s.io/api/predict/crypto-updown","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","queryParams"],"properties":{"type":{"const":"http"},"method":{"const":"GET"},"queryParams":{"type":"object","properties":{"limit":{"type":"integer","maximum":100,"minimum":1,"description":"Max events (default 20)."}},"additionalProperties":false}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.012","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":"$0.012/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.012","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.012","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_wGuZwwlsdToozhGrDSB_A","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.012","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns live Polymarket prediction market events for 'Will <asset> be up or down by <time>?' series, including question text, dates, USD volume, and nested Up/Down outcome prices (implied probabilities).","exampleAgentPrompt":"Pull the latest Polymarket crypto up-or-down prediction markets — show me the top 20 events with their current Up and Down outcome prices for BTC, ETH, SOL, and SPX so I can see what the market is implying about direction.","exampleUseCases":null,"resultDescription":"A list of up-or-down prediction market events (up to `limit` items), each containing: the event question text (e.g. 'Will BTC be up or down by 1pm?'), start/end dates, total USD trading volume, and nested Up and Down outcome markets with their current live prices (representing implied probability of the asset closing higher or lower).","failureModes":["limit out of range (must be 1–100): request rejected with validation error","Polymarket upstream unavailable: stale or empty response","Network timeout: no response returned","Invalid query parameter type: non-integer limit causes schema validation failure"],"whenToPreferThis":"Use this endpoint when you need live, market-implied directional probability for major crypto assets (BTC, ETH, SOL) or SPX, specifically sourced from Polymarket's recurring hourly/daily up-or-down series. Prefer this over general news or sentiment APIs when you want crowd-sourced, financially-staked probability estimates of price direction rather than analyst opinion or raw price data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:54:30.515Z","isFirstParty":false}