Start or stop live backend streams based on active viewers, sync room attendance to your database, warm empty cache channels on demand, and capture peer events from connected clients. Bird delivers signed HTTP notifications to your server as channel activity changes, so you can pause expensive polling or streaming jobs the moment the last browser tab closes.
Realtime presence webhook
HarborMaya has two tabs
presence-operationsBoth connections belong to the same signed member.
One tab closes
Maya still has a live connection. No member_removed event.
The last tab closes
The member leaves this presence channel.
Deliver the notification
realtime.member_removed identifies the member and channel.
Backend receives a change
200{ "type": "realtime.member_removed", "timestamp": "2026-09-29T09:42:30Z", "data": { "channel": "presence-operations", "member_id": "u_maya" } }
Reconcile room activity
Verify the signed delivery and update the application’s observation of this room.
Realtime presence webhook
HarborMaya has two tabs
presence-operationsBoth connections belong to the same signed member.
One tab closes
Maya still has a live connection. No member_removed event.
The last tab closes
The member leaves this presence channel.
Deliver the notification
realtime.member_removed identifies the member and channel.
Backend receives a change
200{ "type": "realtime.member_removed", "timestamp": "2026-09-29T09:42:30Z", "data": { "channel": "presence-operations", "member_id": "u_maya" } }
Reconcile room activity
Verify the signed delivery and update the application’s observation of this room.
Realtime presence webhook
HarborMaya has two tabs
presence-operationsBoth connections belong to the same signed member.
One tab closes
Maya still has a live connection. No member_removed event.
The last tab closes
The member leaves this presence channel.
Deliver the notification
realtime.member_removed identifies the member and channel.
Backend receives a change
200{ "type": "realtime.member_removed", "timestamp": "2026-09-29T09:42:30Z", "data": { "channel": "presence-operations", "member_id": "u_maya" } }
Reconcile room activity
Verify the signed delivery and update the application’s observation of this room.
Keep identity-level presence separate from individual connections.
Subscribe your server to the specific channel, presence, cache, and client events your application needs to act on.
Occupancy webhooks notify your server when the first subscriber joins a channel and when the last browser tab disconnects, staying quiet while connections arrive and leave in between. Start live data feeds or background polling when someone is watching, stop them when the channel vacates, warm empty cache channels on a cache miss, or enable connection-count updates to track active audience size.
Presence webhooks follow verified user identities across open tabs and mobile devices. Your backend receives a join event when a user's first tab connects and a departure event after their last connection closes, so a page refresh or closed tab avoids marking an active teammate offline. You can also forward client-to-client events to your server to log or act on peer activity inside private and presence rooms.
Choose which event groups a Realtime app sends from the dashboard, and share the same endpoint and signing secret with your workspace messaging webhooks. Deliveries include Standard Webhooks signature headers so your server can verify the raw request payload before queuing background work. Failed deliveries retry with exponential backoff for up to five minutes, and your backend can query live channel state on demand to reconcile current membership or occupancy after a downtime gap.
Pair backend webhook notifications with live online rosters, instant state replay for late joiners, and peer-to-peer client events.
Display live online rosters, deduplicate open tabs under one user identity, and track when members join or leave a room.
→Replay the latest published state to newly connected clients and populate empty caches on demand when a cache-miss webhook fires.
→Broadcast typing indicators, live cursors, and selection changes directly between authorized participants in a room.
→Organize teams in workspaces, control API access, and trace changes through audit logs.
Organization
Harbor
Access stays in its workspace.
Production/API keys
Harbor backend
ActiveAlex Lee
Admin
Today · UTC
Audit log
Organization
Harbor
Access stays in its workspace.
Production/API keys
Harbor backend
ActiveAlex Lee
Admin
Today · UTC
Audit log
Organization
Harbor
Access stays in its workspace.
Production/API keys
Harbor backend
ActiveAlex Lee
Admin
Today · UTC
Audit log