These APIs are called "helper" API calls due to the fact they are built on the CORE Blockchain API calls and are geared to making the process of adding and reading metadata, from both PDF and DOCX files, much easier by leveraging a single api call and having no background understanding of how the metadata is stored in the files.
All of the calls can be tested on the right hand side of this screen by clicking the "Try it out button" and using the files provided below. The DOCX file will be used with the /analyzeDocx route and the PDF file will be used with the /analyze route.
Documents for article
STANDARD RESIDENTIAL LEASE AGREEMENT1_SmartDoc.docx