Show HN: I created a GraphQL calendar API for my app users

We needed to let users in our app schedule meetings and events among themselves. after looking around not wanting to reinvent the wheel, I didn't find a simple solution that did not include the behemoth annoyances of google and outlook calendar syncs etc. So like every developer I decided this was a fun project and created one. this is a graphql based calendar/scheduling project that at the end of the day seemed like a good idea to share, and see if others would find useful as i did. in it's core it's a graph database, node.js, java and C# You can get to the playground after you register. ( everything is free of course )

any feedback 2 or more cents of opinion are greatly appreciated