Send Push Notification
Push Notification Endpoints
Send Push Notification
Send a push notification to one or more users across all their registered devices
POST
Send Push Notification
Fans a push notification out to every registered device belonging to the listed users. The server dispatches to APNs (iOS), FCM (Android), and the Web Push protocol in parallel, using whichever platform credentials are configured for this project.
Requires a service or master key (
Returned when
Returned when called with an end-user access token instead of a service/master key.
Authorization: Bearer <serviceKey>). End-user tokens are rejected — this endpoint is intended for your backend, not for end users calling it directly.
Requires the push bundle.
Body Parameters
Array of Sublay user IDs to notify. Between 1 and 100 IDs per request.
Notification title. Displayed as the bold heading on the device.
Notification body text.
Optional key-value data payload forwarded to the app alongside the notification. Values must be strings or serializable primitives. Use this to pass deep-link targets, IDs, or any context your app needs when the user taps the notification.
Response
Returns200 with a results map keyed by user ID. Every requested userId is present in the response — users with no registered devices get an empty array rather than being omitted.
Map from user ID to an array of per-device delivery results.
Devices whose tokens or subscriptions are reported as permanently invalid by the upstream provider (e.g. APNs
BadDeviceToken, FCM UNREGISTERED, Web Push HTTP 410) are automatically deleted during the send — no separate cleanup step is needed.Error Responses
Invalid Body — 400
Invalid Body — 400
userIds is empty, exceeds 100 entries, or required fields are missing.Forbidden — 403
Forbidden — 403
Bundle Not Installed — 403
Bundle Not Installed — 403

