Secret blocks are a great way for GMs to keep information hidden from players. In an item's description, for example, you might include some special information about an attack that you do not want your players to see so it doesn't ruin the surprise. Putting that information in a secret block is a great way to hide it from them. Unfortunately, it also means when you use that item, the secret is hidden from everyone in the chat message. This module will show you, the GM, those secrets in the chat message.
Note: Viewing the secret blocks does require that the user be an owner of the actor that generated the message.
Settings
There is a setting to choose whether this behavior works for GMs only (default) or for everyone.
Problems?
No matter what game system you're running, this module will always change some of the code that renders chat message so it stops stripping out secrets. It's possible that may not be enough, which was the case with dnd5e. If you're still not seeing secrets, please visit the project page and file an issue to let me know. We'll see about adding some code specifically for that system to make it work.