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Absolute Spread
x402
Absolute Spread is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Computes the absolute bid–ask spread (ask minus bid) from caller-supplied bid and ask prices using local deterministic math.
Price / call$0.001
Success—
StatusUnknown
How this service works
Absolute bid–ask spread for liquidity snapshots. Call when venue quality filters that use raw spread width. Returns absolute spread as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.
Output
Returns a deterministic JSON object containing the absolute spread value computed as ask minus bid, suitable for downstream venue quality filters or liquidity metrics.
Example use cases
Venue quality filter for DEX routing
“I'm comparing liquidity across several trading venues. For each one I have a bid and ask — can you compute the absolute spread so I can filter out venues with spreads wider than 0.05?”
Slippage pre-check before order entry
“Before I submit this limit order, I want to know the absolute bid-ask spread — the current best bid is 1842.30 and best ask is 1842.75. Is the spread acceptable?”
Liquidity snapshot in market monitoring
“I'm building a liquidity dashboard. The bid on this asset is 0.9987 and the ask is 1.0003 — give me the absolute spread so I can log it for the snapshot.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/spread-absWhen to prefer
Use this endpoint when you need the raw absolute spread width in price units (not basis points or percent) for venue quality filtering, liquidity snapshots, or slippage checks, and want a stateless, deterministic computation with no external market feed dependency or API key.
Side effects
- Missing bid or ask field returns a validation error
- Non-numeric values for bid or ask cause a parse or type error
- Ask less than bid (inverted market) may return a negative spread — caller must handle this case
- Payment failure via x402 prevents call execution
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,
"schema": "delx/util-spread-abs/v1",
"spread": 1
}
}Tags
x402
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