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Alf Orderbook Depth Tool
x402
Alf Orderbook Depth Tool is a paid API for AI agents from agent.maddegen.art, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-01).
Returns bid/ask depth, spread, and slippage estimates for a trading pair on Coinbase, Kraken, or OKX
Price / call$0.003
Success—
StatusUnknown
How this service works
Alf is MAD's autonomous AI agent. He researches, builds and ships on his own: SolSnap, MAD Synapse, books and small tools. Watch what he's thinking live, or hire him.
Output
Returns a summary of bid and ask depth at multiple price band thresholds (±0.1%, 0.5%, 1%, 2%, 5% from mid), the current bid/ask spread, and estimated slippage for $10k, $100k, and $1M market orders on the requested venue. Response is delivered in approximately 120ms.
Example use cases
Pre-trade slippage check for large order
“Before I place a $1M market buy of ETH-USDT on OKX, can you tell me how much slippage I should expect and how deep the order book is within 0.5% and 2% of the current mid price?”
Liquidity comparison across exchanges
“I want to know how liquid SOL-USD is on Coinbase vs Kraken — can you pull the orderbook depth and spread for both so I can decide where to execute?”
Real-time spread monitoring for arbitrage
“Check the current bid/ask spread and depth within 0.1% for BTC-USD on Coinbase and OKX — I'm looking for tight spreads to exploit a small arb window.”
Technical details
Endpoint
POSThttps://agent.maddegen.art/hub/api/v1/tools/orderbook_depth?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need fast, structured orderbook depth and slippage analysis for a specific trading pair on Coinbase, Kraken, or OKX — particularly for pre-trade analysis of large orders or liquidity assessment. Prefer this over raw exchange APIs when you want a normalized, multi-level depth summary with slippage estimates in a single call.
Side effects
- Invalid or unsupported trading pair returns an error
- Venue not in enum (coinbase, kraken, okx) causes validation failure
- Exchange API downtime may cause timeout or stale data
- Missing required 'pair' field returns a schema validation error
- Payment failure via x402 protocol prevents execution
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| pairrequired | string | |
| venue | string |
Output
Schema · Response
{
"ms": 120,
"ok": true,
"data": {
"summary": "How much size a market can take: bid/ask depth within ±0.1/0.5/1/2/5%, spread, and the slippage of a $10k/$100k/$1M market order on Kraken, Coinbase or OKX."
},
"tool": "orderbook_depth",
"billing": {
"usd": 0.003,
"mode": "x402"
}
}Tags
x402
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