diff --git a/filters/openpolicyagent/opaserveresponse/opaserveresponse.go b/filters/openpolicyagent/opaserveresponse/opaserveresponse.go
index 64ad14d1f9..e95104dfbe 100644
--- a/filters/openpolicyagent/opaserveresponse/opaserveresponse.go
+++ b/filters/openpolicyagent/opaserveresponse/opaserveresponse.go
@@ -126,9 +126,21 @@ func (f *opaServeResponseFilter) Request(fc filters.FilterContext) {
 	fc.Metrics().MeasureSince(f.opa.MetricsKey("eval_time"), start)
 	if err != nil {
 		f.opa.ServeInvalidDecisionError(fc, span, result, err)
+		return
+	}
 
+	allowed, err := result.IsAllowed()
+	if err != nil {
+		f.opa.ServeInvalidDecisionError(fc, span, result, err)
 		return
 	}
+	span.SetTag("opa.decision.allowed", allowed)
+
+	if allowed {
+		fc.Metrics().IncCounter(f.opa.MetricsKey("decision.allow"))
+	} else {
+		fc.Metrics().IncCounter(f.opa.MetricsKey("decision.deny"))
+	}
 
 	f.opa.ServeResponse(fc, span, result)
 }