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Read release notesCircle’s webhooks are an automated method for apps to receive notifications the moment a transaction is completed or fails to complete. Circle will make a request to your application when an operation is completed. That means your app doesn’t need to poll Circle to know whether an operation has completed in the blockchain—the confirmation will arrive automatically.
For configuring a noti subscriber endpoint, see the Notifications Quickstart.
Through the Circle UI in Sandbox or Production, you can set up Webhoook subscriptions. This can be done by:
Automatic subscription removal
All subscriptions in sandbox are removed after 30 days.
Via Circle’s UI you can view all subscriptions registered to your account on Developer → Subscriptions. Currently, our Sandbox environment permits up to 3 subscriptions and our Production environment supports one.
While viewing subscriptions you are also provided the option to remove subscriptions. This is done by simply selecting kebab on the Endpoint and selecting remove.
All these actions can also be done using Circle’s APIs. See API reference subscriptions for more detail.