Jconsole supports a plugin API to add custom tabs (see CR 6179281). Scripting console is an interactive (REPL - Read-Eval-Print-Loop) console tab for jconsole. With script console, user can run arbitrary script interactively or by batch (by loading it from a script file). Jconsole plugin API's JConsoleContext will be exposed as a built-in variable to script engine. Using this, script engine can support arbitrary set of built-in functions for scripts to operate. For example, with JavaScript, top-level functions may be added to assist M&M functionality in scripts.