# How I can listen pubsub broadcast from outside app?

**URL:** <https://discuss.dev.twitch.com/t/how-i-can-listen-pubsub-broadcast-from-outside-app/17710>\
**Category:** API\
**Created:** [September 17, 2018, 7:08am UTC](https://discuss.dev.twitch.com/t/how-i-can-listen-pubsub-broadcast-from-outside-app/17710 "2018-09-17T07:08:10Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dudich](https://d3ovvz0v2ajtpu.cloudfront.net/user_avatar/discuss.dev.twitch.com/dudich/32/5142_2.png) [@dudich](https://discuss.dev.twitch.com/u/dudich)\
**Post date:** [September 17, 2018, 7:08am UTC](https://discuss.dev.twitch.com/t/how-i-can-listen-pubsub-broadcast-from-outside-app/17710/1 "2018-09-17T07:08:10Z")

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I have some EBS which sends some messages through `https://${apiHost}/extensions/message/${channel_id}`.  
Messages like:  
payload = {  
content\_type: ‘application/json’,  
message: JSON.stringify({ type, data }),  
targets: [‘broadcast’],  
};  
So can I catch this “broadcast” messages by some outside app?

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**Author:** ![BarryCarlyon](https://d3ovvz0v2ajtpu.cloudfront.net/user_avatar/discuss.dev.twitch.com/barrycarlyon/32/253_2.png) [@BarryCarlyon](https://discuss.dev.twitch.com/u/BarryCarlyon)\
**Post date:** [September 17, 2018, 4:22pm UTC](https://discuss.dev.twitch.com/t/how-i-can-listen-pubsub-broadcast-from-outside-app/17710/2 "2018-09-17T16:22:55Z")

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Officially speaking: no

That is outside the design specification for Twitch Extension PubSub.

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<div class="post-metadata">

**Author:** ![system](https://d2opxh93rbxzdn.cloudfront.net/original/2X/0/05909729875cce3b53e59d5561c4d23bb14948fc.png) [@system](https://discuss.dev.twitch.com/u/system)\
**Post date:** [October 17, 2018, 4:22pm UTC](https://discuss.dev.twitch.com/t/how-i-can-listen-pubsub-broadcast-from-outside-app/17710/3 "2018-10-17T16:22:59Z")

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