Cross Domain · protocol

WebSub

WebSub is a W3C Recommendation defining an open protocol for real-time publish/subscribe notifications over HTTP. Subscribers register with a hub to receive content updates from publishers without polling.

www.w3.org/TR/websub/The standard

2018First published

9providers in the catalog

Also known as PubSubHubbub, PuSH.

Providers that carry WebSub 9

These providers' own APIs.json profiles carry WebSub as a tag — the provider's statement that the standard is part of what it does. APIs.io has not verified the implementation on this page; the de facto profiles on this site are where that measurement exists. Ordered by Kin Score.

OneSignalexemplar · 76.3 Novuexemplar · 71.6 Knockexemplar · 68.6 Azure SignalR Servicedeveloping · 50.0 Sportradarthin · 37.5 Courierthin · 35.0 NotificationAPIthin · 34.6 Airshipthin · 26.5 Pushwooshemerging · 22.0

Reading

PubSubHubbub for APIs 2011-02-23
Real-Time Notification Layer Within Your API 2013-03-15
The Value of API Driven Events 2017-09-27
Understanding Events Across Your API Platform In Real Time 2018-01-08
What Are Some Resources For Understanding the World of Event-Driven APIs? 2020-07-16

Read from the API Evangelist standards directory. Provider links come from the catalog's own identity tags and are rebuilt nightly. If this page is wrong about a standard or a provider, say so.