{"uid":"cap_3fZ-fXEazpq6QDw8FeFtz","slug":"santyvv-data-order-execution-check-acf2cb03","name":"santyvv-data Order Execution Check","description":"Market and on-chain data, paid per call in USDC on Base through the x402 protocol. No accounts, no API keys. Sources are public data providers; the value added here is keyless access, edge caching, multi-source fallback and normalised responses.","url":"https://x402.santyvv.com/api/execution/check?utm_source=zero.xyz","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":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"par":"BTCUSDT","lado":"venta","libro":{"fuente":"mexc","mejor_ask":118438.9,"mejor_bid":118432.1,"spread_bps":0.57,"precio_medio":118435.5,"niveles_visibles":100},"orden":{"base":0.2113,"completa":true,"quote_usd":25000,"solicitada":{"quote_usd":25000},"slippage_bps":11.24,"precio_efectivo":118302.4,"costo_vs_medio_usd":28.1,"niveles_consumidos":6,"porcentaje_del_libro":1.36,"profundidad_libro_usd":1843200.55},"avisos":["Calculado sobre los 100 niveles publicos de mexc; una orden mayor que la profundidad visible queda subestimada.","El tamano maximo se corta en el primer nivel que rompe el objetivo de slippage (no reparte el nivel frontera)."],"motivos":["Ejecutable dentro del objetivo declarado."],"veredicto":"ok","tamano_maximo":{"base":1.0842,"quote_usd":128400.9,"cortado_por_precio":true,"slippage_objetivo_bps":25}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","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":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_wOOWDSZTLoyGNjUrMhZ7r","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Walks a live order book level-by-level to return an ok/ajustado/riesgo verdict with effective price, slippage in bps and USD, book depth consumed, and maximum safe order size before submitting a trade.","exampleAgentPrompt":"Before I place my order, check if selling $25,000 worth of BTCUSDT on MEXC is safe — I want to know the effective price, slippage in bps, and the maximum size I can sell without blowing past 25 bps slippage.","exampleUseCases":[{"title":"Pre-trade slippage check for large buy","prompt":"I'm about to buy $80,000 worth of ETHUSDT — can you check the live order book and tell me what effective price I'd get, how much slippage I'd pay in bps and dollars, and whether the order gets a green light or a warning?"},{"title":"Finding optimal order size within slippage budget","prompt":"I want to sell BTC but I can't exceed 15 bps of slippage. Can you walk the order book and tell me the maximum dollar amount I can sell right now while staying within that budget?"},{"title":"Venue comparison before quoting a fill","prompt":"Before I quote a fill to my client for $50,000 of BTCUSDT, run a pre-trade check on the order book and give me the verdict — effective price, slippage, and how much of the visible book I'd consume."}],"resultDescription":"Returns a JSON object with a verdict field (ok / ajustado / riesgo), the effective execution price, slippage in basis points and USD, percentage of the visible book the order consumes, number of order book levels consumed, best bid/ask, spread in bps, mid price, and the maximum order size (in base and quote USD) that still fits within the declared slippage target — along with explanatory motivos and avisos arrays.","failureModes":["Order size exceeds visible book depth — slippage will be underestimated and an aviso is returned","Invalid or unsupported trading pair returns an error","Payment not attached or insufficient USDC — HTTP 402 response","Order book data unavailable for the requested venue — endpoint may return an error or stale data","Malformed query parameters result in a 400-level error"],"whenToPreferThis":"Use this endpoint when you need a real-time, per-order pre-trade analysis without downloading the full order book yourself. It is ideal for sizing orders to fit within a slippage budget, validating a fill before quoting it to a counterparty, or comparing execution cost across venues. Prefer it over generic market data feeds when you need a concrete verdict (ok/ajustado/riesgo) with actionable reasons rather than raw book data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T06:32:45.436Z","isFirstParty":false,"canonicalSlug":"santyvv-data-order-execution-check-acf2cb03"}