Failed queries stats

I'm looking some ElasticSearch metrics to monitor the performance of a cluster. I can use several REST API call to obtain data. Specifically I'm grabbing performance data from these REST end points

curl -XGET http://localhost:9200/_cluster/health?pretty=true
curl -XGET http://localhost:9200/_nodes/stats/jvm?pretty=true
curl -XGET http://localhost:9200/_stats?pretty

I can see in the last REST call the time of a index / get operation. But I don't know if there is a REST point where I can obtain information about failed index / get request (failed because out of memory, bulk queue overflow, ...)

Thanks

This is not tracked by ES.