--- title: FAQ description: Answers to the most common questions about the Platform API and atoms. "icon": "comments" --- ### 1. What is an OAuth client? - A platform OAuth client enables you communicate with our API and manage your users. - It contains properties such as name, redirect uris and permissions required by your users. ### 2. What is a managed user? - A managed user is just a representation of your user within our database containing basic information like e-mail. - It can be used to manage the setup of integrations such as Google Calendar, your users bookings. availability, etc. - You should store information about the managed users in your database and use the access token to make API calls on their behalf. ### 3. Are a cal.com user and a managed user related? - No, a cal.com user and a managed user are not related in any way. We can consider them as two separate entities. - A "managed user" is completely independent of user accounts on cal.com and you don't need to register users on the cal.com web application. ### 4. What is an access token? - At the time of creating a managed user you'll be provided with an access token and a refresh token. - Each managed user is linked with an access token which helps us in identifying which users scheduling we need to handle. - The access token only lasts for 60 minutes after which you can query the refresh point with your refresh token which will give you a new access token. - Inside of atoms we handle access token refreshing part ourselves, outside of that you may need to handle the refreshing part yourselves. - Refresh tokens should never be exposed to the frontend, keep them secure and only use them on the backend. ### 5. What is an atom? - An atom is a customizable UI component that handles scheduling on behalf of your user. - Everything from the front-end to API calls is being handled by the atom, all you need to is import the atom and drop it in your code. ### 6. What are the minimun setup requirments for using atoms? - You need to have a project that uses React version 18 and above. - At the moment atoms are only supported in React, so there's no way to use them in vanilla js or any other popular framework. ### 7. Can recurring events be rescheduled? - No, at the moment you are only allowed to cancel a recurring event. ### 8. Why toggle animation is not working in the AvailabilitySettings atom? - For the AvailabilitySettings toggle animation to work set the reading direction on the `` element: ```html ... ``` ### 9. What are the authentification methods for making calls to the v2 API? Either of the two: - Setting `Authorization: Bearer ` header where `` is access token of the managed user. - Setting `x-cal-client-id: ` and `x-cal-secret-key: ` where `` is OAuth client id and `` is OAuth client secret. Both can be copied from the dashboard. ### 10. When am I charged and not charged ? - You are charged for scheduled booking only when the booking starts. - If a booking is rescheduled you are still charged once. - If a booking is cancelled then you are not charged for it. ### 11. What happens if there are more bookings than in my plan? - You have to pay overage for each booking that exceeds the amount in your plan.