{"uid":"cap_YMpalYsqLFpID59TTN3qe","slug":"mavrin-divergence-signals-api-f1a61f29","name":"Mavrin Divergence Signals API","description":"Kalshi and Polymarket US research data for agents. Free market search and coverage, odds from 0.004 USDC, and x402 payments on Base.","url":"https://api.mavrin.app/api/v1/divergence/signals","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":{"limit":{"type":"string","description":"max rows, up to 500"},"since":{"type":"string","description":"unix timestamp lower bound"},"underlying":{"type":"string","description":"category filter, e.g. sports, crypto"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"count":1,"signals":[{"ts":1787960682.01,"edge":0.006,"kind":"cross-venue-lock","side":"yes","size":3,"price":0.994,"category":"sports","basisRisk":null,"market_id":"mlb-champ-2026-yankees","confidence":0.3}]}},"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_1FtkWoM8_va2maYkUy203","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 cross-venue arbitrage and divergence signals between Kalshi and Polymarket prediction markets, including edge, confidence, price, and side for each signal.","exampleAgentPrompt":"Pull the latest cross-venue divergence signals from Mavrin for sports markets — give me up to 50 signals since yesterday and tell me which ones have the highest edge.","exampleUseCases":[{"title":"Sports market arbitrage scanning","prompt":"Show me the most recent divergence signals for sports prediction markets on Mavrin — up to 100 results — and flag any with an edge above 0.01."},{"title":"Crypto prediction market monitoring","prompt":"Check Mavrin for any cross-venue divergence signals in crypto prediction markets since 48 hours ago, and tell me the confidence and edge on each one."},{"title":"Real-time arbitrage alert for agents","prompt":"Scan Mavrin's divergence signals right now with no category filter and a limit of 500 — I want to see every cross-venue lock opportunity currently available across all markets."}],"resultDescription":"Returns a JSON object with a count and an array of signal objects. Each signal includes a unix timestamp, edge size, signal kind (e.g. cross-venue-lock), yes/no side, position size, price in USDC, category, basis risk (nullable), market ID, and a confidence score between 0 and 1.","failureModes":["Invalid or missing 'type' or 'method' in input object returns a 400 validation error","'limit' exceeding 500 is silently clamped or rejected","'since' timestamp in wrong format returns no results or an error","No signals found for the requested category or time range returns an empty signals array","x402 payment failure results in a 402 response requiring USDC payment on Base","Rate limiting or quota exceeded returns a 429 error"],"whenToPreferThis":"Choose this endpoint when you need structured, machine-readable arbitrage or divergence signals between Kalshi and Polymarket, rather than raw market data or odds. It is ideal for agents that need to identify mispricing, execute cross-venue strategies, or monitor prediction market inefficiencies programmatically. Use it over general market search endpoints when you specifically want pre-computed edge and confidence metrics per signal.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:39:56.589Z","isFirstParty":false}