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Delx Commerce — Order Book Depth Notional Calculator
x402
Delx Commerce — Order Book Depth Notional Calculator is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Computes the total notional value (in USD or quote currency) across an array of order book price/size ladder levels
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a JSON object containing the schema identifier ('delx/util-ob-depth-notional/v1'), the number of levels used in the computation, and the computed depth_notional value representing the total notional (price × size summed across all provided levels).
Example use cases
Liquidity check before large trade
“I'm about to place a large order and want to know the total notional depth available. Here are the top 5 bid levels: [{price:100.5,size:200},{price:100.4,size:350},{price:100.3,size:500},{price:100.2,size:150},{price:100.1,size:400}]. What's the total notional?”
Market depth monitoring for algo strategy
“My algo needs to track real-time notional depth. Given these current ask levels [{price:50.10,size:1000},{price:50.15,size:800}], what is the total notional depth right now?”
Compare bid vs ask notional imbalance
“I want to check whether bids or asks have more notional depth. Calculate the notional for this bid ladder: [{price:3000,size:2},{price:2999,size:5}] so I can compare it against the ask side.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/ob-depth-notional?utm_source=zero.xyzWhen to prefer
Use this endpoint when you have raw order book price/size ladder data and need to quickly compute the total notional depth without building your own aggregation logic. It is ideal for agents operating in trading, DeFi, or market-making contexts that need a cheap ($0.001), no-signup, pay-per-result microservice for a specific financial computation. Prefer it over rolling your own aggregation when you want verifiable, pay-per-call pricing via x402 on Base or Solana.
Side effects
- Missing or malformed 'levels' array returns a validation error
- Empty levels array may return zero depth notional or an error
- Non-numeric price or size values cause parsing failures
- Payment not included or insufficient USDC causes HTTP 402 response
- Network timeout if Base/Solana payment settlement is slow
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| levels | array | Array of {price,size} ladder levels |
Output
Schema · Response
{
"type": "json",
"example": {
"schema": "delx/util-ob-depth-notional/v1",
"levels_used": 2,
"depth_notional": 498.5
}
}Tags
x402
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