iCal Create (.ics Generator)

x402

iCal Create (.ics Generator) is a paid API for AI agents from ical.openverbs.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-28).

Generates a valid .ics calendar file from event fields such as summary, start/end time, location, and description.

Price / call$0.002

Seller volume →—

Success—

StatusUnknown

How this service works

Build a valid .ics document from event fields (summary, start/end, location, …).

Output

A valid iCalendar (.ics) document as text, containing the VEVENT component populated with the provided fields (summary, DTSTART, DTEND, location, description, UID, URL, PRODID, and calendar name) — ready to be attached to an email, saved to disk, or served as a downloadable file.

Example use cases

Email-ready meeting invite

“Generate an ics file for a meeting called 'Product Kickoff' on July 15th from 2pm to 3:30pm at 'One Market Street, San Francisco' — I want to attach it to an email invite.”

All-day event for shared calendar

“Make an ics file for an all-day company holiday called 'Summer Shutdown' on August 18th so I can share it with the whole team.”

Automated event confirmation workflow

“Build a .ics calendar event for 'Doctor Appointment' starting tomorrow June 12th at 9:00am and ending at 9:30am at 'City Medical Center, 450 Broadway', with the description 'Annual checkup — bring insurance card'.”

Technical details

Endpoint

POSThttps://ical.openverbs.com/v1/create?utm_source=zero.xyz

When to prefer

Use this endpoint when you need to programmatically generate a standards-compliant .ics file from structured event data — e.g. in automated workflows that send calendar invites, confirmation emails with attachments, or any agent that needs to output a downloadable calendar event. Prefer this over manual iCal construction to avoid formatting errors and ensure RFC 5545 compliance.

Side effects

Missing required 'summary' field returns a validation error
Missing required 'start' field returns a validation error
Invalid ISO datetime format for start/end causes a parse error
summary exceeding 1000 characters is rejected
description exceeding 10000 characters is rejected
Payment not included or insufficient (x402) results in a 402 response

Input

Schema · Request body

Field	Type	Description
end	string	ISO end datetime.
uid	string	Event UID. Auto-generated when omitted.
url	string	Event URL.
start	string	ISO start datetime (or date for all-day).
allDay	boolean	Whether this is an all-day event. Defaults to false.
prodId	string	Calendar PRODID. Defaults to a generic openverbs id.
summary	string	Event title.
location	string	Event location.
description	string	Event description.
calendarName	string	Calendar display name.

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