We're using an OAuth integration with Cloudflare on the cloud version of Outerbase where we've partnered with them it ~ a year ago to list your databases and have the ability to run queries against them if you approve it.
Not against this for debugging purposes, but keep in mind going through the REST API is still an order of magnitude slower than having a worker proxy. We are working on fixing that soon, but just in case you wonder why your queries are 1-2s over the REST API.