{"uid":"cap_A9JzXxD6pqVRWp8FtUdsE","slug":"x402-prediction-market-divergence-8387d7be","name":"x402 Prediction Market Divergence","description":"Find prediction-market questions priced differently on Polymarket vs. Kalshi — a cross-platform divergence signal built from data no single-platform competitor has","url":"https://agentx402pay.com/api/prediction-arb?utm_source=zero.xyz","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"],"type":"string"},"queryParams":{"type":"object","properties":{"q":{"type":"string","description":"Optional keyword filter on the matched question text"},"limit":{"type":"string","description":"Max matches to return, 1-25 (default 10)"},"minDivergencePct":{"type":"string","description":"Minimum probability-point divergence to include, 0-100 (default 5)"}}}},"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_fwBHMkcqZsGxA7dWuYTBV","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":"Finds prediction-market questions priced differently on Polymarket vs. Kalshi, surfacing cross-platform probability divergences as arbitrage signals","exampleAgentPrompt":"Find prediction market questions where Polymarket and Kalshi disagree by at least 10 percentage points on the outcome probability — show me up to 15 results related to elections.","exampleUseCases":[{"title":"Cross-platform arbitrage opportunity scanner","prompt":"Show me the top 20 prediction market questions where Kalshi and Polymarket prices diverge by at least 15 percentage points — I want to see where the two platforms disagree the most."},{"title":"Sector-specific divergence research","prompt":"Find prediction markets about cryptocurrency outcomes that are priced differently on Polymarket versus Kalshi, showing any divergence greater than 5 percentage points."},{"title":"Monitoring narrative vs regulated market agreement","prompt":"Pull up to 25 questions where Polymarket and Kalshi show different probabilities on political or economic events — I want to see if the regulated market is pricing things differently than the open market."}],"resultDescription":"A list of matched prediction market questions where Polymarket and Kalshi show divergent pricing, including each platform's current probability/price, the percentage-point divergence, and market identifiers for both platforms. Filtered by optional keyword and minimum divergence threshold, up to the requested result count.","failureModes":["No matching markets found for the given keyword filter — returns empty list","minDivergencePct or limit parameters out of range — may return error or be clamped to bounds","One or both platform data feeds temporarily unavailable — partial or stale results","Question text matching may miss semantically equivalent but differently worded markets across platforms","Rate limiting or payment failure results in 402 or 429 response"],"whenToPreferThis":"Use this endpoint when you need cross-platform prediction market comparison that requires data from both Polymarket and Kalshi simultaneously — no single-platform API provides this divergence signal. Prefer this over querying each platform's API separately when you want pre-computed, ranked divergence scores and want to avoid the complexity of matching questions across platforms yourself.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T12:40:51.951Z","isFirstParty":false,"canonicalSlug":"x402-prediction-market-divergence-8387d7be"}