# License

License is not needed for Spell Book to work with Knights of the Editing Table extensions.

License is needed to enable support for non-Knights extensions.\
It works for an unlimited number of extensions.

{% hint style="success" %}
If your favourite extension doesn't support Spell Book, let its developer know about [Spell Book API](https://manuscript.knightsoftheeditingtable.com/extensions/spell-book/api-reference).
{% endhint %}