OKAPI Browser is a fork of one of my other projects (called USOS API Browser), modified so it supports browsing and testing OpenCaching API methods.
Note: The list of available methods is dynamically fetched from the chosen OKAPI server. The screenshot may be outdated.
This application is for testing purposes only. There are tons of WebExceptions
it doesn't even try to catch!
Having that said, I still think that it is quite useful developer tool, especially if you're aiming for a deep understanding on how the OKAPI OAuth authorization actually works.
You can use this deployment site. Please note, that it can be a little ahead or behind the master branch.