See guide on setting this up easily Send Notifications to Mini App Users
Authorizations
API key to authorize requests
Body
application/json
An array of target FIDs to whom the notifications should be sent. Each FID must be a positive integer. Pass an empty array to send notifications to all FIDs with notifications enabled for the mini app.
Maximum length:
100
The unique identifier of a farcaster user or app (unsigned integer)
Example:
[1, 2, 3]
Filters to apply to the target_fids set. All filters are additive, so only users matching all filters will be notified.
Response
Success