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SundayFactoryX Derivatives Market Data API
x402
SundayFactoryX Derivatives Market Data API is a paid API for AI agents from api.sundayfactoryx.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Returns derivatives market data (e.g. futures, options, funding rates, open interest) for a specified crypto asset (SOL, BTC, or ETH) via a pay-per-call x402 micropayment model.
Price / call$0.01
Success—
StatusUnknown
How this service works
Pay-per-call (x402) market-data + research API for autonomous agents. Paid endpoints return HTTP 402 with an x402 v2 payment challenge; pay in USDC on Base with any x402-aware client.
Output
A JSON object containing derivatives market data for the requested asset (SOL, BTC, or ETH), likely including metrics such as funding rates, open interest, perpetual futures prices, options data, and/or proprietary market signals. The response schema is open-ended (generic object), so specific fields may vary. The call requires a $0.01 USDC micropayment via x402 on Base before data is returned.
Example use cases
Crypto trading agent market check
“Get me the current derivatives market data for BTC — funding rates, open interest, whatever's available — so I can decide whether to open a long position.”
DeFi research on Solana derivatives
“Fetch the latest derivatives data for SOL from SundayFactoryX; I'm writing a research report on Solana perpetuals and need current market signals.”
Automated ETH risk monitoring
“Check the ETH derivatives market right now and flag if funding rates are unusually high or open interest has spiked significantly.”
Technical details
Endpoint
GEThttps://api.sundayfactoryx.com/v1/market/derivativesWhen to prefer
Choose this endpoint when your agent needs real-time or near-real-time crypto derivatives market data (funding rates, open interest, futures/options signals) for BTC, ETH, or SOL, and is operating in a pay-per-call micropayment architecture using x402 on Base. It is well-suited for autonomous trading agents, DeFi research pipelines, or risk-monitoring bots that need lightweight, on-demand data without a subscription. Prefer it over subscription APIs when call frequency is low or cost-per-call economics are preferred.
Side effects
- HTTP 402 returned if x402 payment challenge is not fulfilled (expected flow — requires x402-aware client to complete payment)
- Invalid or unsupported asset symbol returns an error (only SOL, BTC, ETH accepted)
- Network or upstream data provider outage may return 5xx error
- Stale or unavailable market data may result in incomplete response fields
- Payment rejected or underfunded wallet causes failed authentication
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| asset | string | one of: SOL|BTC|ETH |
Output
Schema · Response
{
"type": "object"
}Tags
x402
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