{"uid":"cap_wan76JrMtgCxgUvRYwEw1","slug":"hars-zero-signal-api-breaking-markets-d6345463","name":"HARS-Zero Signal API – Breaking Markets","description":"Polymarket prediction-market intelligence for AI agents. Pay-per-call in USDC via x402 protocol. Multi-chain: Base + Solana.","url":"https://hars.cryptotavern.xyz/paid/breaking-markets?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"object","example":{"count":0,"markets":[]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.008/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_kTuZ0S3JcmTRKSk0oex0n","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.008","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches Polymarket prediction-market intelligence, surfacing breaking or high-signal markets for AI agents via pay-per-call USDC payments.","exampleAgentPrompt":"Pull the latest breaking markets from the HARS-Zero Polymarket signal feed and tell me which prediction markets are trending right now.","exampleUseCases":[{"title":"Political event forecasting monitor","prompt":"Check the Polymarket breaking markets feed and tell me which political events are currently being bet on most heavily — I want to know where the crowd is focused."},{"title":"Crypto news market scanner","prompt":"Pull the latest breaking Polymarket markets and filter for anything crypto or DeFi related — I want to see what prediction markets just opened around recent news."},{"title":"Daily prediction market briefing","prompt":"Give me a morning briefing: fetch the current breaking markets from Polymarket and summarize the top 5 markets by activity so I can decide where to focus my research today."}],"resultDescription":"Returns a JSON object with a count of matching markets and an array of market objects from Polymarket, each representing a prediction market with associated metadata and probability signals. When no matching markets are found, returns count 0 and an empty markets array.","failureModes":["Payment not included or insufficient USDC — 402 Payment Required response","No breaking markets currently available — returns count:0 and empty markets array","Invalid properties filter parameter — may return empty results or error","Network timeout if Polymarket data feed is slow","Rate limiting if too many calls are made in rapid succession"],"whenToPreferThis":"Choose this endpoint when you need real-time Polymarket prediction market intelligence specifically around breaking or trending markets, and you are comfortable with pay-per-call USDC micropayments via the x402 protocol on Base or Solana. Prefer this over building direct Polymarket integrations when you need a simple, agent-ready REST interface without managing exchange credentials or raw API complexity.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T12:46:45.368Z","isFirstParty":false,"canonicalSlug":"hars-zero-signal-api-breaking-markets-d6345463"}