For Book library component:
where is the code to edit to enable auto accept?
You need in file booklibrary.php at function saveLendRequest
some like below code
Where can i find more info about YAZ(z39.50) protocol
$lend_request = new mosBookLibrary_lend_request($database);
$tmp = $lend_request->accept();
Info in Google
Book Library Pro have in Backend setting file with some set servers (more 300 ) what support YAZ(z39.50) protocol. Search and server select you do exactly like and with amazon.
Also you can add new servers what support YAZ(z39.50)