This is an older thread, but as I recently stumbled upon it and encountered some confusion, in the hopes it clarifies this topic a bit, here's my experience. I've used the previously suggested search (ie, including '| alert.track=1' ) and found that as of this writing in (Splunk 9.0.4), alert.track=1 seems to mean that the 'action' of 'Add to Triggered Alerts' is enabled for that particular alert, and because that specific 'Add to Triggered Alerts' action isn't available for Reports, one can conclude it is in fact an Alert. Conversely, though, alert.track=0 isn't exclusive to Reports, and an Alert can use other actions aside from 'Add to Triggered Alerts', like email/slack/etc and in that case alert.track=0. In fact, that 'Add to Triggered Alerts' action isn't listed in the 'actions' field in the search results, only alert.track=1. So to summarize alert.action=1 does explicitly mean Alert, but alert.action=0 does not exclude it from being an Alert. Unsure if this functionality changed at some point in the years since this question was asked. Depending on one's interpretation of OP's question, alert.track value may or may not be relevant. In any case, thanks to all who responded as this has helped me a great deal in solving my own requirements.
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