{"uid":"cap_goCSKGL2jMJhi0ZL6ye-L","slug":"hars-zero-signal-api-depth-snapshot-1be4b2bf","name":"HARS-Zero Signal API – Depth Snapshot","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/depth-snapshot?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":"$0.016/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.016","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.016","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_gLLbPFJNpkIs6TopIEePk","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.016","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a depth snapshot of Polymarket prediction markets, providing order book and market intelligence data for AI agents.","exampleAgentPrompt":"Pull me a depth snapshot of current Polymarket prediction markets so I can see order book liquidity across active events.","exampleUseCases":[{"title":"Political market liquidity check","prompt":"Get me a Polymarket depth snapshot for active political markets — I want to see how much liquidity is on both sides of the major election events right now."},{"title":"Crypto trading signal feed","prompt":"Fetch the latest Polymarket depth snapshot so my trading bot can analyze order book depth signals before deciding whether to enter a position."},{"title":"Market research on active predictions","prompt":"Pull a Polymarket depth snapshot and tell me how many markets are currently active and what the order book looks like for the top ones."}],"resultDescription":"Returns a JSON object containing a count of matched markets and an array of market objects with order book depth data for Polymarket prediction markets. The markets array may be empty if no markets match the filter.","failureModes":["Payment not received or x402 protocol handshake fails — returns 402 Payment Required","No markets match the provided properties filter — returns count:0 and empty markets array","Invalid or malformed input properties parameter — may return an error or empty result","Polymarket data source unavailable — may return stale or empty snapshot","Rate limiting or quota exceeded after micropayment issues"],"whenToPreferThis":"Choose this endpoint when you need a point-in-time snapshot of Polymarket order book depth and market listings, especially in an autonomous agent context using USDC micropayments via the x402 protocol. Prefer this over scraping Polymarket directly when you need structured, agent-ready data with predictable pay-per-call pricing on Base or Solana.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T06:39:38.078Z","isFirstParty":false,"canonicalSlug":"hars-zero-signal-api-depth-snapshot-1be4b2bf"}