https://www.notion.com/help/create-integrations-with-the-notion-api
Notion API integrations – Notion Help Center
With Notion's API, you'll be able to create custom internal integrations. Some of our partners may also require an internal integration token in order to link...
notion api integrationshelp center
https://www.notion.com/help/notion-calendar-integrations
Notion Calendar integrations & API – Notion Help Center
Notion Calendar works with a lot of other tools that you already use in your day to day. It also works seamlessly with Notion 🔌
notion calendarhelp centerintegrationsapi