Welcome to Countrywise Google Calendar ID API
You can use the (https://github.com/LokeshBoran/google-countrywise-calendar-id/edit/main/README.md) to get list of google calenders.
Google Calendar ID API
This API is use to fetch calendar ID's for google calendar API's, so you can directly pass these ID's as calendarID in different google calendar API i.e. calendars, events
How To Use -
Method: GET
URL: https://lokeshboran.github.io/google-countrywise-calendar-id/data.json