# Services from api.sundayfactoryx.com on Zero

> api.sundayfactoryx.com serves 7 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/api.sundayfactoryx.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.sundayfactoryx.com/health.json

## Services

- [SundayFactoryX Derivatives Market Data API](https://www.zero.xyz/c/sundayfactoryx-derivatives-market-data-api-f42e72d6/llms.txt): $0.01/call via x402. 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.
- [SundayFactoryX Volatility Surface API](https://www.zero.xyz/c/sundayfactoryx-volatility-surface-api-e451c34a/llms.txt): $0.03/call via x402. Returns the implied volatility surface (term structure and skew) for a financial asset as market data
- [SundayFactoryX Cross-Venue Perpetuals Market Data](https://www.zero.xyz/c/sundayfactoryx-cross-venue-perpetuals-market-data-5ca1d2ed/llms.txt): $0.001/call via x402. Returns aggregated perpetual futures market data across multiple trading venues for autonomous agent consumption, paid via x402 micropayment in USDC on Base.
- [SundayFactoryX Equity Volatility API](https://www.zero.xyz/c/sundayfactoryx-equity-volatility-api-9471fb45/llms.txt): $0.03/call via x402. Returns current market volatility data for equities via a pay-per-call x402 micropayment endpoint
- [SundayFactoryX Signals Forecasts Endpoint](https://www.zero.xyz/c/sundayfactoryx-signals-forecasts-endpoint-bf64887d/llms.txt): $0.05/call via x402. Returns market signal forecasts for autonomous agents via a pay-per-call x402 USDC-gated REST API
- [SundayFactoryX Solana On-Chain Data API](https://www.zero.xyz/c/sundayfactoryx-solana-on-chain-data-api-7aa47468/llms.txt): $0.03/call via x402. Returns on-chain Solana market data and research signals for autonomous agents via pay-per-call x402 micropayment.
- [SundayFactoryX Research Telemetry Endpoint](https://www.zero.xyz/c/sundayfactoryx-research-telemetry-endpoint-4b8a7fd8/llms.txt): $0.005/call via x402. Returns market data and research telemetry signals for autonomous agents via a pay-per-call x402 micropayment model on Base/USDC

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

- [Zero catalog index](https://www.zero.xyz/llms.txt)