# Implied Volatility Term Structure for Crypto Options

> Implied Volatility Term Structure for Crypto Options is a paid API for AI agents from x402-services-production.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Returns the implied volatility (IV) term structure for BTC, ETH, or SOL options — ATM IV per expiry date and the front-month IV — so users can assess expected market volatility.

## Facts

- Endpoint: POST https://x402-services-production.up.railway.app/api/options/vol
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/implied-volatility-term-structure-for-crypto-options-c9f4c728
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UVuitGcEZR9mdDjLik5Bm

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability implied-volatility-term-structure-for-crypto-options-c9f4c728 -d '<json body>'
```

Example prompt: What's the implied volatility term structure for ETH options right now — show me ATM IV across all expiries and the front-month IV?

## When to prefer this

Use this endpoint when you need options-market-derived volatility data for BTC, ETH, or SOL — specifically ATM implied volatility across the expiry curve and front-month IV. Prefer this over realized volatility or funding-rate endpoints when the user wants to understand expected future volatility as priced by the options market, or when assessing whether options are cheap or expensive.

## Known failure modes

- Unsupported currency symbol returns an error (only BTC, ETH, SOL accepted)
- Missing required 'currency' field returns a validation error
- Stale or unavailable options market data may cause a timeout or empty expiry list
- Payment not sent or insufficient USDC balance causes a 402 Payment Required response

## How this service works

Implied-volatility term structure: ATM IV per expiry and front-month IV for a currency. Rising IV = rising expected volatility. Send { currency }.

## Output

Returns a structured response with the implied volatility term structure for the requested currency: ATM IV values keyed by expiry date, plus the front-month IV. Rising IV values signal rising expected market volatility. Data is suitable for assessing options market sentiment and hedging conditions.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "currency"
 ],
 "properties": {
  "currency": {
   "type": "string",
   "description": "BTC, ETH, or SOL"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/implied-volatility-term-structure-for-crypto-options-c9f4c728/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-services-production.up.railway.app](https://www.zero.xyz/host/x402-services-production.up.railway.app/llms.txt)