Hello Julia! And welcome to the Teneo community 
Thanks for your nice explanation. If I understood you correctly, the integration where the text is extracted from the url provided by the user, should always happen within the Pre-processing Global Script. Having said that, I can think of two different ways of solving this challenge:
- Localized version - Scripted-wise: If the integration method is specific to this situation and involves a small amount of code, you can simply migrate it into this Global script an make use of it at this same point.
- Global version - Solution-wise: in case you plan to make use of this method in a different place and you want to avoid duplication, you can use the code of the integration and create a Helper Class (stored in the Resource section) or on Solution Loaded. This way you can reuse the method across different scenarios.
If possible and wished, feel free to share a more concrete example to facilitate a more comprehensive and tailored proposal.
Hope this helps,
Sofía