Trouble connecting webhook to Google Pub/Sub

Webhooks and Events
1

I’m having trouble connecting a Webhook to a Google Pub/Sub topic, directly from Shopify, not an app. I’m using the webhookSubscriptionCreate mutation in the Admin API to create the webook. I’m getting this error:

invalid url 'pubsub://aerobic-form-381218:ShopifyWebhooks'

I can create a webhook to an https:// endpoint with no problem.
I believe the format of the URI is supposed to be:

pubsub://project:topic

I assume those are the Google project ID (or name) and Google topic name? No matter what combinations of those I try I’m getting the same error message.

I believe the permissions are set correctly on the Google topic, see screen shot below.

Any ideas?

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image413×442 27 KB

2

I got around this by using the deprecated pubSubWebhookSubscriptionCreate mutation. The documentation still refers to Google Pub/Sub as the recommended approach, so hope that means that only the pubSubWebhookSubscriptionCreate mutation is deprecated, not the facility itself.

Does anyone know for sure?

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3

Hi Mitchell,

We’re in the process of consolidating all of the webhookSubsciption mutations: so to use Google Pub/Sub, up to the latest version (2025-07) you have to use pubSubWebhookSubscriptionCreate and then starting from the next versions (2025-10), you can use webhookSubscriptionCreate but with the uri field for the WebhookSubscriptionInput: the previous callbackUrl field is being deprecated ( not visible yet in the doc but we’re working on making it more obvious WebhookSubscriptionInput - GraphQL Admin)

I hope this helps!

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