needed anytime when calls an API to CRUD a specific person's FB data on their behalf.

obtained via a login dialog, require a person to permit your app

terms

app AT are used to make requests to FB API on behalf of an app, rather than a user. This can be used to modify the parameters of your app, create and manage test users, or read your app's insight

generated using a pre-agreed secret between app and FB. obtain an app AT via server-to-server call

how to generate?

similar to user AT tapi untuk CRUD FB page

obtained by: get a user AT and asking for page permission; then get the page AT via Graph API

how to generate:

client token as an identifier that you can embed into native mobile bin or desktop apps. It isn't a secret identifier, since it is embedded in apps

like app tokens, client tokens make graph API requests on behalf of apps instead od users.

how to generate?