> For the complete documentation index, see [llms.txt](https://manuscript.knightsoftheeditingtable.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://manuscript.knightsoftheeditingtable.com/extensions/spell-book/license.md).

# 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](/extensions/spell-book/api-reference.md).
{% endhint %}