post https://api.webflow.com/v2/sites//registered_scripts/inline
Add a script to a Site's Custom Code registry. Inline scripts can be between 1 and 2000 characters.
In order to use the Custom Code APIs for Sites and Pages, Custom Code Scripts must first be registered to a Site via the registered_scripts endpoints, and then applied to a Site or Page using the appropriate custom_code endpoints.
Required scope | custom_code:write