# Services from astro.openverbs.com on Zero

> astro.openverbs.com serves 4 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/astro.openverbs.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/astro.openverbs.com/health.json

## Services

- [Sun Position & Solar Event Calculator](https://www.zero.xyz/c/sun-position-solar-event-calculator-c9f12628/llms.txt): $0.004/call via x402. Calculates sun position, sunrise, sunset, and other solar events for a given geographic location and date
- [Moon Phase Lookup](https://www.zero.xyz/c/moon-phase-lookup-0b2ad1da/llms.txt): $0.004/call via x402. Returns the moon phase for a given calendar date and UTC time
- [Astronomy Season Lookup](https://www.zero.xyz/c/astronomy-season-lookup-fd6a6bd0/llms.txt): $0.004/call via x402. Returns the astronomical season (spring, summer, autumn, winter) for a given date and hemisphere
- [Julian Date Converter](https://www.zero.xyz/c/julian-date-converter-e1dabc0f/llms.txt): $0.004/call via x402. Converts a calendar date and time (year, month, day, hour, minute, second) to its Julian Date Number

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)