Hi Juan,
it's possible as it's actually what JEvents does, but it's quite complex as we are fully icalendar standard compliant and that implies saving the information about events in several tables in the database and filling lots of fields in a specific way.

My recommendation is that you use CSV import as you can create a PHP function that triggers the import of your data whenever you need, and this way the events will be synced almost at the moment.

My problem with the csv is the server time, I think that doing it directly would be a 30% of the time and resources of the import. All users make events very often. would be faster if I get access to the tables and the format in which they work. Also no discount for gold or silver?

Well, JEvents is licensed under GPL and core version is Free, so just install it and play around with SQL and having in mind the icalendar specification

Regarding the discount, we are in a low prices way so we cannot offer general discounts. We can only afford providing discounts to our members when they renew or upgrade their membership, sorry.

Ok thanks.