A simple and very small plugin which provides a command to check whether or not you are in fact op! This allows you to check without having to grant/remove it to/from yourself or others (which tends to only be accessible in console).
The permission for this command defaults to op, however you can also assign the node to trusted users.

Usage:
Use "/amiop [player-name]" or "/isop [player-name]" to check if you or another player is op. By default these commands require being op, however you can also grant them via the below permission node.

Note that offline players aren't supported!
To simply check your own status just do "/amiop" or "/isop".

Permissions added by this plugin:
amiop.check: Allows checking if you are indeed op with the above commands.

This plugin should work on most Minecraft versions, however it has not been tested.