This is a feature request to support Node 6.3.0's V8 inspector capability (node --inspect) from within the vm module's contexts. For example:

vm.runInNewContext(code, sandbox, {
  inspect: 9999, // same as --inspect=9999
});

If it's not possible to make individual contexts inspectable, it'd also meet our needs to make other contexts inspectable if the parent Node process is running with --inspect. Currently code that runs in other contexts isn't debuggable (ex: debugger statements are ignored).