# Realtime for developers Keep every view up to date. Publish live events to the right people. [Get started](/dashboard/signup?returnTo=%2Fdashboard%2Fw%2Frealtime) [Contact Sales](/demo?product=realtime) [Read customer stories](/customers) [Explore Enterprise](/enterprise) - [Airwallex](/customers/airwallex) - [Glovo](/customers/glovo) - [Zillow](/customers/zillow) - Uber - [Binance](/customers/binance) - Adobe - Meta - PayPal - Pinterest - Square - [Al Jazeera](/customers/aljazeera) - [Aramex](/customers/aramex) - [Bazaar Technologies](/customers/bazaar) - [ComparaOnline](/customers/compara) - [Emma](/customers/emma) ## Connect your app. Keep every view in sync. Inspect your app with MCP or CLI. Publish live events from your server. Connect the right clients to the right application state. **MCP**: `Bird MCP` ```json https://mcp.bird.com ``` ## Your app changes. Every view follows. Approve access. Publish a change. Keep connected views in sync. Harbor backendServer ORDER 42 Packed Fulfillment update order-updated `{ id: 42, status: "shipped" }` private-order-42 Event accepted by Realtime Subscription authorization Maya · Order 42 Approved Another customer Refused Your backend checks who can join. harbor.example / orders / 42 harborYour account YOUR ORDER ORDER 42 · MAYA CHEN ### The everyday set. Shipped Your order is on its way. Live Confirmed Packed Shipped Live event received No refresh needed 1Authorize the subscription 2Accept the published event 3Update the connected view Inspect the access decision Your backend checks the signed-in user’s access to order 42 before signing this connection and channel. The refused customer receives no order payload. Publication acceptance is separate from asynchronous client receipt. [Private channels](/docs/guides/realtime/private-channels)[Authorization contract](/docs/guides/realtime/authorizing-channels) Maya’s second browser tab Same member ID Harbor operationsLive workspace TODAY’S ORDERS Ready for dispatch. MC AL Order Customer Status #42 Maya Chen Ready #43 Alex Lee Packed #44 Sam Kim Preparing Maya Alex 2 members 3 connections Maya has two tabs open. She appears once. Close Maya’s extra tab ### Know who’s here. One person can have several connections. Show each member once, and update presence when their first tab joins or their last one leaves. [Explore presence](/realtime-api/features/presence) Latest eventCache channel 09:40 Confirmed Replaced 09:41 Packed Replaced 09:42 Shipped Latest New connection Current state received ORDER 42 The everyday set. Shipped What if the cache is empty? Handle `bird:cache_miss` by loading current state from your application database. The cache can expire; it does not replay the full event history. ### Catch up to now. A new subscriber receives the latest cached event. Bring the screen up to date without replaying every earlier change. [Explore cache channels](/docs/guides/realtime/cache-channels) ## Explore Realtime. From the first event to shared application state. Connect the pieces you need. [Realtime API Publish live events to subscribed application clients.](#integrate)[Private channels Restrict live updates to subscriptions your backend approves.](/docs/guides/realtime/private-channels)[Presence Show the members participating in a live experience.](/realtime-api/features/presence)[Encrypted channels Keep supported event payloads readable only to authorized endpoints.](/docs/guides/realtime/encrypted-channels)[Client events Share typing and other transient events between authorized clients.](/docs/guides/realtime/client-events)[Cache channels Give a new subscriber the latest published state.](/docs/guides/realtime/cache-channels)[Public channels Share live information intended for every visitor.](/docs/guides/realtime/public-channels)[Webhooks React to channel activity from your backend.](/realtime-api/features/webhooks)[User targeting Send a live update to a specific member.](/docs/guides/realtime/sending-events-to-a-member)[Connection management Understand and control the live connections in an application.](/docs/guides/realtime/connection-lifecycle) ## Scale without losing control. Organize teams in workspaces, control API access, and trace changes through audit logs. Harbor Organization Workspaces Production Sandbox ### Delivery agent API key · Customer operations team Active Permissions Access Email Read & write SMS Read & write WhatsApp Read Read & write AL Alex Lee Admin Permissions updated ### Audit log Production API key updated Alex Lee · 09:42:18 UTC Workspace Production Resource Delivery agent WhatsApp Read Read & write Succeeded [Workspaces](/docs/guides/workspaces)[Team roles](/docs/guides/users-teams-roles)[API authentication](/docs/guides/authentication) [Explore Enterprise](/enterprise) Examples: [MCP](/de-de/realtime-api.mcp.md) · [TypeScript](/de-de/realtime-api.ts.md) · [Python](/de-de/realtime-api.py.md) · [Go](/de-de/realtime-api.go.md) · [PHP](/de-de/realtime-api.php.md) · [cURL](/de-de/realtime-api.curl.md) ## Start with Realtime. Build across channels with Bird. [Get started](/dashboard/signup?returnTo=%2Fdashboard%2Fw%2Frealtime) · [Contact Sales](/demo?product=realtime) [Email](/email-api) · [SMS](/sms-api) · [WhatsApp](/whatsapp-api) · [Apple Messages](/apple-messages-api) · [Voice](/voice-api) ## Related resources - [Send your first realtime event](/docs/get-started/send-your-first-realtime-event) (docs) - [Build your first integration](/learn/paths/integration) (course) [Get an implementation brief](/learn/workspace?topic=realtime)