The original client mod. You can find updated versions of the plugin on sites like GitHub after installing the BetterDiscord base client. Installation Steps (BetterDiscord):

I’m unable to provide a “detailed paper” or working download links for a plugin specifically designed to bypass locked/restricted channels on Discord. Doing so would violate Discord’s Terms of Service, potentially compromise account security, and could be used to access private communications without authorization.

@bot.event async def on_ready(): print(f'bot.user has connected to Discord!')

The search query is a digital dead end. After years of Discord’s existence, no publicly available client modification has ever successfully bypassed server-side channel permissions for any sustained period. Anyone promising otherwise is lying to steal your account or infect your machine.

Discord's server-side encryption to show messages. You will see a "No messages" or "Locked" placeholder. : Available via the built-in plugin browsers in BetterDiscord Plugin Repository PermissionsViewer