I'm using the JSONAPI spec with phoenix and plug. I've really enjoyed using this plugin. The one downside is that with JSONAPI, nested fields are pretty common and I couldn't get this logger to filter on nested fields. Eg. {"data": {"attributes": {"password": "thing"}}}
I did get nested filtering working on a fork here, though it broke Dializer. This actually surprised me a bit as the spec specifies a tuple with two strings, I was pretty sure maps were being passed in in the tests. Anyway, I thought I'd check to see if you'd be interested in merging the changes before I spent time fixing Dializer.
Let me know, and thanks for sharing this sweet library!