Can the agent subscribe to VSAM changes instead of polling?

The agent keeps polling a VSAM file for new records. Can it subscribe to changes instead?

Yes, when dataset CDC is enabled for that file. [[product:ol-coreiq|OL CoreIQ]] decodes inserts, updates, and deletes with the catalog layout and publishes structured events. The agent, or a workflow in front of it, consumes the event. CDC is not a second writer on the file, and it does not replace a read API you already published.