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Delx Commerce — Order Book Imbalance Calculator
x402
Delx Commerce — Order Book Imbalance 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 order book imbalance ratio from displayed bid and ask sizes at the best quotes
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 with the schema identifier 'delx/util-ob-imbalance/v1', the input bid_size and ask_size echoed back, and an imbalance value — a float representing the normalized difference between bid and ask depth (positive means bid-heavy, negative means ask-heavy, zero means balanced).
Example use cases
Real-time trading signal generation
“I'm watching a stock and the best bid size is 500 and the best ask size is 200 — what's the order book imbalance right now so I can decide whether to go long?”
Market microstructure research
“I need to compute the OBI metric for a set of snapshots. Start with bid size 12 and ask size 8 — give me the imbalance ratio so I can log it to my dataset.”
Automated HFT alert trigger
“My bot sees bid_size of 1000 and ask_size of 150 at the top of book — calculate the imbalance score so I can check if it crosses my threshold to fire an order.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/ob-imbalance?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-use computation of order book imbalance without setting up any SDK or account — ideal for agents that need a single, verifiable microstructure signal from level-1 quote data paid for in USDC on Base or Solana.
Side effects
- Missing bid_size or ask_size fields returns a validation error
- Non-numeric values for sizes cause a 400 bad request
- Both sizes being zero may cause a division-by-zero or undefined imbalance result
- Payment failure via x402 prevents the computation from executing
- Extremely large size values may cause precision issues in the result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| ask_size | number | Displayed size at best ask |
| bid_size | number | Displayed size at best bid |
Output
Schema · Response
{
"type": "json",
"example": {
"schema": "delx/util-ob-imbalance/v1",
"ask_size": 8,
"bid_size": 12,
"imbalance": 0.2
}
}Tags
x402
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