What permissions do users need in order to use Dev Tools?

Elasticsearch 6.5.4, with the matching version of Searchguard. What permissions do I need in order to allow users to use Dev Tools?

I was able to determine cluster:admin/ingest/pipeline/simulate for grok debugger, but I can’t determine what permission or combination of permissions for users to use Console and Search Profiler.

Dev Tools is just a web interface within a browser for curl. It creates requests to ElasticSearch API based on Your input, sends them and presents the response. The permissions needed depend on operation You are trying to run.

So, If You want to use dev tools to run search query, You only need permissions that allow to run the query plus permissions allowing access to Kibana.

Please let me know If You could run a query in a console but were not unable to test it in Search Profiler.