How to inspect Notification 2.0 topics and consumers on Cumulocity Edge?

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Hi,

I’m using Cumulocity Edge 2025 with Notifications 2.0 and I’m trying to understand the state of the Messaging Service on my Edge instance.

Specifically, I’d like to know:

  • How can I see which consumers exist for a given Notification 2.0 topic/subscription?
  • Is there any REST API that lists active topics, consumers, backlog sizes, unacknowledged messages, etc.?
  • Is there a way to identify and remove stale consumers that were created in the past but are no longer used?

While reading the documentation, I found references to the Administration > Monitoring > Messaging Service view which appears to provide visibility into topics, consumers and backlogs. However, I cannot find this view on my Edge instance.

Is the Messaging Service monitoring UI available on Cumulocity Edge, and if so, how can it be enabled? If it is not available on Edge, what is the recommended way to inspect Notification 2.0 topics and consumers?

Thanks!

2

Hi Wojciech,

The messaging service monitoring UI is not available in Cumulocity Edge version 2025 (in fact, I don’t think it actually existed in the 2025 Cumulocity release as a whole).

However, it’s available in the Cumulocity Edge 2026 release, released earlier this year.

I believe the REST APIs have existed for longer, including in the 2025 release, and are documented at Cumulocity - OpenAPI .

Cheers,

Richard

3

Thanks, Richard.

In addition, note that the monitoring UI is still in Public Preview status. The APIs it uses for things like backlog size, unacknowledged message counts, etc. are not yet publicly documented, and subject to (possibly breaking) changes without warning.

The standard N2.0 APIs that Richard linked to are very stable and fully supported.

Scott