{"uid":"cap_Qe5H6V-ob87CURQ0I8UFX","slug":"preflight-cross-venue-price-check-cc499e33","name":"PreFlight Cross-Venue Price Check","description":"Pre-trade & pre-sign checks for autonomous agents: everything an agent verifies BEFORE signing a transaction — token due diligence, calldata red-flag decoding, oracle freshness, holder concentration, bridge routing with executable calldata, cross-venue perp funding, gas and price sanity checks. EVM chains: Ethereum, Base, Arbitrum, Optimism.","url":"https://meryol-agenticmarket-x402.hf.space/price/cross/%7Bchain%7D/%7Btoken%7D","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"chain":"base","notes":[],"sources":[{"note":null,"source":"coingecko","price_usd":3120.1},{"note":null,"source":"dexscreener","price_usd":3121.32}],"requested":"eth","spread_bps":12,"median_price_usd":3120.45}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_M4_VkcGOl4xlSfN7FAKY9","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches cross-source token price data including median price, spread in basis points, and per-source quotes for a given token on a specified EVM chain","exampleAgentPrompt":"Before I swap, check the cross-venue price of ETH on Base and tell me the median price and how wide the spread is across CoinGecko and DexScreener.","exampleUseCases":null,"resultDescription":"Returns a JSON object with the chain name, token requested, median price in USD, spread in basis points, and an array of per-source price quotes (e.g. CoinGecko, DexScreener) with individual prices and optional notes. Useful for detecting price inconsistencies before signing a trade.","failureModes":["Unsupported chain or token returns an error or empty sources array","Token not listed on one or more price sources results in partial data","Network timeout if price feeds are slow to respond","Invalid chain or token path parameter returns a 4xx error","Stale or unavailable oracle data may return no sources"],"whenToPreferThis":"Use this endpoint when an AI agent needs to verify a token's price across multiple venues before executing a trade or signing a transaction on an EVM chain (Ethereum, Base, Arbitrum, Optimism). Ideal for pre-trade sanity checks to detect price manipulation, stale oracles, or abnormal spreads. Prefer this over single-source price feeds when cross-venue validation and spread analysis are needed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:30:01.904Z","isFirstParty":false}