Task

Smile

2 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.

Surface Scenarios x402 REST usage

When to use: book reval on an IV surface under F/rate/time/vol shocks with sticky moneyness|strike|fixed_vol. Vol order: interpolate → volAbs → volRel → smileTwist*k. Greeks are sticky-σ BS Greeks (not smile bump deltas)...

derivatives-pricer-production.up.railway.app Crypto & Payments 6 calls / 30d checked 2026-10-26

0.15 USDC per call per call

Price From Surface x402 REST usage

When to use: you already have an IV surface (k,T,σ) and need to price options on it — not invert premiums and not scalar σ. Interpolates total variance w=σ²T bilinear in log-moneyness k=ln(K/F); wingRule=flat_vol. Return...

derivatives-pricer-production.up.railway.app Crypto & Payments 6 calls / 30d checked 2026-10-26

0.08 USDC per call per call

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