This looks great, and the query syntax is fairly easy to pick up (just from the "tips" in the UI - I haven't been able to find the documentation yet). The idea of connecting the parts of the query with pipe characters reminds me of https://stedolan.github.io/jq/

The feature where you can add the queries to a Cloudwatch dashboard seems to be a bit broken at the moment. First, the version of the query that I copied to a dashboard didn't seem to respect the time limit I'd set so instead of looking at the last hour, it was looking at all time - could get accidentally very expensive! Also, I couldn't see a way to show the visualisation (ie the stats graph) on the dashboard - just the raw table of query results, which is not ideal. Hopefully I've missed something, or those niggles will be sorted out soon.

Overall, very impressive!