Hello @JamesKF! Thank you for this exceptional piece of script; I must say, you’ve triggered my interest too, and I’m trying to implement it in my Vault.
Following the instructions, everything seems to be working fine, but when I run the scripts (after choosing title, autor, recommender and comment) this show up:

Should I change some part of the script? I’ve simply copied the “script_googleBooks_quickAdd.js”
Thanks 