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4SEC Crypto Volatility Index API
x402
4SEC Crypto Volatility Index API is a paid API for AI agents from api.foursec.xyz, paid per call via x402, $0.03/call, status down (last checked 2026-09-15).
Returns a real-time volatility index score and risk metrics for a given crypto token symbol, aggregated across multiple DEXes.
Price / call$0.03
Success—
StatusDown
How this service works
Real-time multi-DEX aggregated crypto market data. Pay per request with USDC on Base via x402 protocol.
Output
A JSON object containing the queried token symbol, a numeric volatility index value, a categorical volatility label (e.g. low/medium/high), and a risk_metrics object with supporting risk detail — all aggregated from live multi-DEX data.
Example use cases
Pre-trade risk check for token
“Before I swap into PEPE, can you check its volatility index and tell me what risk category it falls into based on current DEX data?”
Portfolio volatility monitoring
“I'm holding SOL, AVAX, and ARB — can you pull the current volatility index for each and flag any that are in a high or extreme volatility category?”
DeFi alert system setup
“What's the volatility index for UNI right now? I want to know if it's crossed into a high-risk zone so I can decide whether to reduce my position.”
Technical details
Endpoint
GEThttps://api.foursec.xyz/volatility-index/%7Bsymbol%7DWhen to prefer
Choose this endpoint when you need a real-time, aggregated volatility signal for a specific crypto token across multiple DEXes — especially useful for pre-trade risk assessment or monitoring DeFi positions. Prefer over single-exchange data sources when cross-DEX aggregation matters for accuracy.
Side effects
- Unknown or unsupported token symbol returns an error or empty result
- Payment failure via x402 protocol (insufficient USDC balance or incorrect payment header) returns HTTP 402
- Rate limiting or network issues may return 5xx errors
- Symbol format mismatch (e.g. lowercase vs uppercase) may cause lookup failures
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "object",
"example": {
"symbol": {
"type": "string"
},
"risk_metrics": {
"type": "object"
},
"volatility_index": {
"type": "number"
},
"volatility_category": {
"type": "string"
}
}
}Tags
x402
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