Create file .liquid

[Good]

How to create a new file with extension .liquid?
And how can I update the layout / theme.liquid file to include the file I created earlier?

I searched and looked a lot at the API and found nothing explanatory or that I could have any results ...

I look forward to some help, thanks!

Using api..

[oscprofessional]

Hello Good,

Follow this screens:

[Good]

@oscprofessional Yes, but I want to do this automatically using API .. thanks for your time.

[Jason]

Look into the assets API. There's examples in the docs that should point you in the right direction.

https://help.shopify.com/en/api/reference/online-store/asset#update-2019-07