Once available, you can simply upgrade Provider/Riverpod and the devtool to the latest versions, and you should be able to see a new tab in the Flutter devtool. This tab will list all the providers that your application contains and allows you to inspect/edit their state.
This new feature will be part of version 5.0.0 of Provider and 0.14.0 of Riverpod, which will also be null-safe compatible and should be released later this month.
This is still an early preview, but many improvements are planned (such as time-travel). Stay tuned for more information!