Onix for Books Implementation

[Daniel Demesmaecker]

I'm writing an app for a non profit organitation that should help them manage the libarary and members.
I'm using SpringBoot with javaFX and everything works fine, but I thought it would be nice that the users (read organitation) could simply provide the isbn number and the data would automaticly be stored in the database instead of heaving to type everything out. So I contacted the Belgian organitation that manages the isbn's and asked if a public database exsist where I can get the information by isbn.
They suggested to use the api from Onix for Book, but I have no Idea how to implement it and can't get my head around the documentation provided.
Anyone used Onix for books already? Could you give me some pointers?

Thanks in advance

[Tim Cooke]

Do you know where that API is available? ONIX for books looks like a description of the data format containing the book information. I could not find where an API exists to query for existing books (I only searched for 30 seconds).

[Daniel Demesmaecker]

No not realy, I asked for it and they replied all the information is on the website. Ass I understand it, its not realy a api, but a header request and response, but I have no idea on how or where