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Delx Commerce Spread Percentage Calculator
x402
Delx Commerce Spread Percentage 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).
Calculates the bid-ask spread percentage and midpoint price given a bid and ask price
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 original ask and bid prices, the computed midpoint price (mid), the spread as a percentage (spread_pct), and a schema identifier string (delx/util-spread-pct/v1).
Example use cases
Evaluating liquidity of a trading pair
“I'm looking at a crypto pair with a bid of 49800 and an ask of 50200 — what's the spread percentage and midpoint price?”
Monitoring tightness of FX quotes
“For a forex quote where bid is 1.0820 and ask is 1.0825, can you calculate the spread percentage for me?”
Comparing spreads across multiple assets
“I have bid 205.10 and ask 205.40 for a stock I'm watching — what's the spread as a percentage of the mid price?”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/spread-pct?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a simple, cheap, verifiable computation of bid-ask spread percentage and midpoint from raw price quotes, without needing to integrate a full market data provider. Ideal for agents that receive raw bid/ask quotes from exchanges and need to normalize or filter by spread width on-the-fly.
Side effects
- Missing bid or ask fields results in a validation error
- Non-numeric values for bid or ask cause a parsing error
- Ask price lower than bid price may return a negative or unexpected spread_pct
- Payment failure via x402 (insufficient USDC balance) blocks the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| ask | number | Input field: ask. |
| bid | number | Input field: bid. |
Output
Schema · Response
{
"type": "json",
"example": {
"ask": 100.5,
"bid": 99.5,
"mid": 100,
"schema": "delx/util-spread-pct/v1",
"spread_pct": 1
}
}Tags
x402
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