To install mcpclient, you must first download the corresponding version of fabric with the latest version of mcpclient. Then go to my github repository, go to releases and download the .zip of the latest version of mcpclient. Finally, extract the contents of the .zip into the mods folder of your .minecraft.
The main command is /mcp. You can use /mcp help to see all the information.
By default, the client options menu opens with the right Shift key. You can change this in your keyboard settings.
You need an MCPTool account with the Pro or Partner plan and the application open when using MCPClient. The mcptool API will automatically sync with mcpclient; you can see this in the top left corner under "MCPTool API." Then, you need to enable the options in the Password Tracker menu.