Tools | Bloodborne Wiki

Tools are items in Bloodborne that do not deplete with use, and can be used for specific purposes. The game lists them as consumables.

Name	Use	Acquired
Blacksky Eye	Shoots a single arcane missile at an enemy	Aquired by going through Adeline's quest line and receiving the Balcony Key. Once you aquire the key go to the door at the far end of the bottom floor of the Research Hall and open it. Go into the large Lumenflower area at the back middle of the area there will be a body that has the Blacksky Eye, but be warned: surrounding the body are many enemys that use the Blacksky Eye against you so bring some good arcane defense.
Blood Gem Workshop Tool	Unlocks the ability to reinforce weapons with Blood Gems.	Treasure in chest in the library area after Tomb of Oedon.
Empty Phantasm Shell	Coats weapon with arcane damage for a limited time. (Unlimited uses, each use consumes 3 Quicksilver Bullets.) Requirement: 15	In a chest close to the lake entrance in Byrgenwerth.
Executioner's Gloves	Summon wrathful Spirits. Requirement:  15	Jump down the window on the second floor in the library in Cainhurst Castle, and it will be in a chest.
Messenger's Gift	Enveloping black mist changes user into a messenger. Requirement: 10	In the Nightmare Frontier, down in the swamp, guarded by one of the frenzy mages.
Monocular	Used to zoom in and see across a distance.	Found on corpse in Cathedral District, at balcony above Cleric Beast arena.
Old Hunter Bone	The art of of Quickening speeds up rolling and quicksteps. Requriement:  15	Found in a chest in the Old Abandoned Workshop. (Must have killed Blood Starved Beast to access.)
Rune Workshop Tool	Unlocks the ability to use Caryll Runes.	Corpse in a small basement room, accessed from the room you fight the Witch of Hemwick.
Tiny Tonitrus	Strike into the ground to emit blue sparks.  Requirement:  25, Scaling: S	In the Unseen Village just before the Amygdala that fires a laser there's a gap in the railings to the right, the tool is in that area.
A Call Beyond	Creates a small exploding star. Requirement:  40	On balcony in Altar of Despair.
Workshop Haze Extractor	Extract Arcane Haze from Ritual Materials.	Found in a chest in the side area before the boss in Lower Pthumeru Chalice (2nd Layer)
Beast Roar	A beast roar that repels nearby foes and objects. Requirements:  15	Near the hounds in cages in Forbidden Woods.
Choir Bell	Invigorates all cooperating parties, healing them. Requirement:  15	In Nightmare of Mensis, in a chest in the optional area after killing Micolash, Host of the Nightmare, behind the locked Iron Door (use Iron Door Key) beyond the chained up Frenzy Brain and guarded by two spiders and a frenzy wench.
Madaras Whistle	Summons a giant snake from the Nightmare to your location. Requirements:18 Bloodtinge.	Complete  Valtr's questline (or kill him) and kill the Madaras Twin in the Forbidden Woods.
Short Ritual Root Chalice	Used to search for public Chalice Dungeons and requires no Ritual Materials  to use. (updated text requested)	- Currently available through: Messenger insight shop for 10 insight (it is stated in item main page that "after defeating the third layer boss in Central Pthumeru" however this needs to be confirmed) - side note: (proof: V1.04 patch notes on this site or https://www.reddit.com/r/bloodborne/comments/377x36/short_ritual_root_chalice/ multiple user generated proof) - Previously available through: "Pthumerian Elder in Lower Hintertomb Chalice (Layer 3)"