# Services from ical.openverbs.com on Zero

> ical.openverbs.com serves 3 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/ical.openverbs.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/ical.openverbs.com/health.json

## Services

- [iCal RRULE Expander](https://www.zero.xyz/c/ical-rrule-expander-26f716d7/llms.txt): $0.002/call via x402. Expands an RFC 5545 RRULE recurrence rule string into a list of concrete occurrence datetimes, with an optional human-readable description of the recurrence pattern.
- [iCal Parser – ical.openverbs.com](https://www.zero.xyz/c/ical-parser-ical-openverbs-com-bda360d1/llms.txt): $0.002/call via x402. Parses raw iCalendar (.ics) text into structured calendar event objects including summary, start/end times, location, RRULE recurrence rules, and attendees.
- [iCal Create (.ics Generator)](https://www.zero.xyz/c/ical-create-ics-generator-72b26473/llms.txt): $0.002/call via x402. Generates a valid .ics calendar file from event fields such as summary, start/end time, location, and description.

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)