KEY
Keep it — there is no sell value to weigh.
Selling it would not return anything, so there is no reason to get rid of it.
The most direct way to get Library Key is through A Dubious Gift.
A key to Svartrau Cathedral's library.
Quest or activity
Recorded outcome: I found Radu in the abandoned wing of the almshouse – and killed him. He was working for Xanthe and the vrakhir thanked him for his service by turning Radu into some monstrosity. I delivered the grim news to the deacon – he was quite shaken, but still gave me access to the cathedral library.. The binding proves the result-scoped reward, not that every playthrough receives it.
Follow the mapped pickup or quest source first; it is the most predictable route currently listed.
The most direct way to get Library Key is through A Dubious Gift.
QUICK ANSWER
Lock or location use not yet mapped
ITEM DECISION GUIDE
Keep it — there is no sell value to weigh.
Selling it would not return anything, so there is no reason to get rid of it.
WHAT IS IT USED FOR?
That does not mean it has no use later in the game.
See what it is used for →CAN I SAFELY SELL IT?
Selling it would not return anything, so there is no reason to get rid of it.
CAN I GET ANOTHER?
Use the confirmed quest, shop, crafting, or fixed pickup route below.
KNOWN USES
No related quest is currently linked.