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Delx Commerce — Bid-Ask Spread Calculator (BPS)
x402
Delx Commerce — Bid-Ask Spread Calculator (BPS) is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-01).
Calculates the bid-ask spread in basis points (BPS) given a bid and ask price, returning mid price and spread metrics.
Price / call$0.003
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 original bid and ask prices, the calculated mid price, the raw spread (ask minus bid), and the spread expressed in basis points (bps), along with a schema identifier string.
Example use cases
Market tightness check for algo trader
“My algo is looking at a stock with a bid of 99.75 and an ask of 100.25 — what's the spread in basis points and what's the mid price?”
Options desk spread monitoring
“Can you calculate the spread in bps between a bid of 50.10 and an ask of 50.40 so I can see how liquid this options contract is?”
Crypto pair spread comparison
“I'm comparing liquidity across pairs — the bid is 0.0821 and the ask is 0.0835, what's the spread in basis points?”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/spread-bps?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, verifiable, pay-per-call computation of bid-ask spread in basis points without signing up for a service or maintaining API keys. Ideal for agents operating in trading, DeFi, or financial analytics contexts that need on-demand spread calculations with micropayment settlement in USDC.
Side effects
- Missing bid or ask field returns validation error
- Non-numeric values for bid or ask cause a bad request response
- Ask price lower than bid price may return unexpected or negative spread values
- Payment failure via x402 protocol returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| ask | number | Ask price for spread calculation. |
| bid | number | Bid price for spread calculation. |
Output
Schema · Response
{
"type": "json",
"example": {
"ask": 100.5,
"bid": 100,
"mid": 100.25,
"schema": "delx/util-spread-bps/v1",
"spread": 0.5,
"spread_bps": 49.8753
}
}Tags
x402
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