{"uid":"cap_2abyvfbtbqAEz4NvCEWSL","slug":"synthora-prediction-markets-f478366a","name":"SYNTHORA Prediction Markets","description":"SYNTHORA prediction-markets: top prediction markets from Polymarket and Kalshi — implied probability, bid-ask spread, liquidity, volume, open interest and freshness seal (UTC timestamp). Filter with {\"limit\": N, \"source\": \"all|polymarket|kalshi\", \"min_liquidity\": usd}. For autonomous trading, political-risk and allocation agents. $0.05 USDC via x402 on Base. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.","url":"https://api.hergertsynthora.com/v1/prediction-markets?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"limit":{"type":"integer","description":"max markets to return (1-50, default 10)"},"source":{"enum":["all","polymarket","kalshi"],"type":"string","description":"exchange filter"},"min_liquidity":{"type":"number","description":"minimum liquidity in USD (default 1000)"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_1Dmco6RQEBiW4pY6O8PSR","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns top prediction markets from Polymarket and Kalshi with implied probabilities, bid-ask spreads, liquidity, volume, open interest, and freshness timestamps","exampleAgentPrompt":"Show me the top 15 most liquid prediction markets right now from both Polymarket and Kalshi — I want to see implied probabilities, bid-ask spreads, volume, and open interest, filtering out anything under $5,000 in liquidity.","exampleUseCases":[{"title":"Political risk pre-election screening","prompt":"Pull the top 20 prediction markets from Polymarket and Kalshi related to the current election cycle, sorted by liquidity, and only show me markets with at least $10,000 in liquidity so I can assess political risk for my portfolio."},{"title":"Prediction market arbitrage scanning","prompt":"Get me the top 25 markets across both Polymarket and Kalshi right now — I want bid-ask spreads and implied probabilities so I can spot any pricing discrepancies between the two exchanges worth trading."},{"title":"Autonomous trading agent market feed","prompt":"Fetch the 10 most liquid Polymarket markets right now with their implied probabilities, volume, and timestamps so my trading agent can decide where to allocate."}],"resultDescription":"A ranked list of prediction markets (up to the requested limit) including: market name/question, implied probability, bid-ask spread, liquidity in USD, trading volume, open interest, exchange source (Polymarket or Kalshi), and a UTC freshness timestamp indicating when data was last updated.","failureModes":["Upstream failure from Polymarket or Kalshi API returns no charge and an error flag","Invalid source enum value returns a 400 validation error","min_liquidity set too high may return an empty result set","limit out of range (below 1 or above 50) returns validation error","Stale data if upstream exchanges are delayed — check UTC freshness timestamp"],"whenToPreferThis":"Choose this endpoint when you need aggregated, cross-exchange prediction market data combining Polymarket and Kalshi in a single call with unified schema. Prefer it over direct exchange APIs when building political-risk models, autonomous trading agents, or portfolio allocation tools that need normalized liquidity, volume, and probability data with a freshness guarantee. The $0.05 USDC per-call pricing (with first 3 calls free) makes it cost-effective for iterative screening workflows.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T07:08:58.449Z","isFirstParty":false,"canonicalSlug":"synthora-prediction-markets-f478366a"}