ChatGPT Plugin

Holiday Calendar Builder

Holiday-aware .ics schedules

Brand: KI Katapult

Category: Productivity
Primary Subcategory: Calendar & Scheduling Apps

Integration details

Description

Turns a schedule into a calendar file that skips the right holidays. Lists public holidays for Germany (every state and regional variants such as Assumption Day in Catholic Bavarian communes), Austria and Switzerland, computed with correct movable feasts, plus German school holidays for 2026 to 2028 from the Kultusministerkonferenz. Builds RFC 5545 .ics files with recurring events, holiday exclusions and extra dates off, keeps local time across daylight-saving changes, shows a preview of every occurrence and checks its own output before offering the download. Also checks any .ics file and explains why it won't import. Every holiday result names its source and data date.

Integration type: Plugin
Verification status: Not applicable
Platform: ChatGPT
Category: Productivity
Primary Subcategory: Calendar & Scheduling Apps
Secondary Subcategories: None listed
Brand: KI Katapult
Access: No account required
First tracked: 2026-10-28
Tool count: 3
Market: US

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Primary Subcategory

Competing in ChatGPT Calendar & Scheduling Apps

View Category

Listed in alphabetical order

Primary Subcategory

Agenda HeroComing soonGet notified

Agenda RosaComing soonGet notified

Agenda+ | BusinessComing soonGet notified

Aide Calendar: AI PlannerComing soonGet notified

AutomationsComing soonGet notified

Holiday Calendar BuilderComing soonGet notified

Tools

3 tools agents can invoke

Build an RFC 5545 .ics file from single or recurring events. Recurring events skip the region's public holidays, German school holidays and extra dates off. Returns a download link valid for 60 minutes, the excluded dates with reasons and a preview of the occurrences. Does not write into any calendar account.
List public holidays for Germany (national, per state and regional variants), Austria and Switzerland, with optional German school holidays (2026–2028) from the Kultusministerkonferenz. Each entry has its scope; every result cites its source and data date.
Check an uploaded .ics calendar file against RFC 5545 and explain why it may fail to import: missing properties, unknown time zones, end before start, broken recurrence rules or exclusions, line problems.

FAQs

Holiday Calendar Builder ChatGPT Plugin FAQ

How the directory, categories and Discoverability Score work.

Read the methodology

How do I improve Holiday Calendar Builder's ChatGPT Plugin discoverability?

The levers are the listing surface agents actually read: names, descriptions, keywords, tool metadata, and registry health. Which lever matters depends on where discovery breaks, which is what continuous measurement shows.

What are Holiday Calendar Builder alternatives on ChatGPT?

As of 2026-10-28, Holiday Calendar Builder competes with Agenda Hero, Agenda Rosa, Agenda+ | Business, Aide Calendar: AI Planner, Automations, CalendarBridge, ComingUp Today, Eventful: Make Calendar Events and 9 more in ChatGPT Calendar & Scheduling Apps, ranked by public Discoverability Score.

Where is this profile measured?

This profile uses the geography attached to the latest public registry snapshot: US. Locale tags are intentionally omitted.