possible / how to define a new magic ?

[parmentelat]

Hi there

I was playing with the idea of creating a new magic

something similar to the %%tutor but for git, by targetting this cool sandbox site
https://learngitbranching.js.org/?NODEMO

I know how to create a new extension for a Python kernel - and have actually written my own brew of %%tutor for such kernels here https://github.com/parmentelat//ipythontutor - but am looking for a clue on how to carry out the same within metakernel

I have tried to use the same recipe as with a python kernel, doing e.g.

%load_ext ipythontutor

but already load_ext is not a known magic...

please point me to the relevant doc if I missed it, or otherwise any hint would be most welcome :)

thanks