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Basis Percent Calculator
x402
Basis Percent Calculator 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 basis percentage between a futures price and spot price as (future − spot) / spot, enabling carry and premium/discount analysis.
Price / call$0.001
Success—
StatusUnknown
How this service works
Basis percent = (future − spot) / spot for carry checks. Call when cash-and-carry or premium/discount scans from caller prices. Returns basis percent 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
A deterministic JSON object containing the computed basis percentage value as (future − spot) / spot, expressed as a decimal or percentage. No live market data is fetched — the calculation is performed locally from the caller-supplied prices.
Example use cases
Cash-and-carry arbitrage check
“The BTC spot price is 65000 and the quarterly futures are trading at 66200 — what's the basis percent so I can decide if there's a cash-and-carry arb worth running?”
Futures discount scan for hedgers
“Spot is at 3200 and the near-month futures are at 3150 — calculate the basis percent so I know how deeply discounted the futures are relative to spot.”
Carry trade premium monitoring
“I'm tracking a carry trade — spot is 1850 and the perpetual futures are at 1875. Give me the basis percent so I can monitor the premium over time.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/basis-pctWhen to prefer
Use this endpoint when you need a fast, deterministic, serverless computation of basis percent from caller-supplied spot and futures prices — especially in cash-and-carry arbitrage scans, premium/discount monitoring workflows, or any pipeline where you already have the prices and just need the ratio computed reliably without external data dependencies or API keys.
Side effects
- Missing or invalid 'spot' or 'future' fields returns an error
- Spot value of zero causes a division-by-zero error
- Non-numeric inputs may return a validation error
- Payment failure via x402 will prevent response delivery
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| spot | integer | Input field: spot. |
| future | number | Input field: future. |
Output
Schema · Response
{
"type": "json",
"example": {
"spot": 100,
"future": 101.5,
"schema": "delx/util-basis-pct/v1",
"basis_pct": 1.5
}
}Tags
x402
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