santyvv-data Order Execution Check

x402

santyvv-data Order Execution Check is a paid API for AI agents from x402.santyvv.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-12).

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.

Price / call$0.1

Seller volume →—

Success—

StatusUnknown

How this service works

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.

Output

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.

Example use cases

Pre-trade slippage check for large buy

“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?”

Finding optimal order size within slippage budget

“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?”

Venue comparison before quoting a fill

“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.”

Technical details

Endpoint

GEThttps://x402.santyvv.com/api/execution/check?utm_source=zero.xyz

When to prefer

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.

Side effects

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

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "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
    }
  }
}

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