Choose by described combat function
If you are comparing tools by their recorded function, start with ranged Shuriken, shield-breaking Axe, and far-reaching Spear descriptions.
Loaded Shuriken Loaded Axe Loaded SpearProsthetic tools, combat arts, skills, and upgrades. Explore how the equipment and progression systems work.

If you are comparing tools by their recorded function, start with ranged Shuriken, shield-breaking Axe, and far-reaching Spear descriptions.
Loaded Shuriken Loaded Axe Loaded SpearIf fire, explosive flashes, or rapid sword-linked attacks are relevant to your reading, compare the Flame Vent, Firecracker, and Sabimaru entries.
Flame Vent Shinobi Firecracker SabimaruIf you are reviewing tools described for movement, protection, or utility, consult Mist Raven, Umbrella, Divine Abduction, and Finger Whistle.
Mist Raven Loaded Umbrella Divine Abduction Finger WhistleChoose a topic to see how it works, where it helps and what to consider.
A small ranged weapon that throws shuriken. The listed upgrade names include Spinning Shuriken, Phantom Kunai, Gouging Top, Sen Throw, and Lazulite Shuriken.
Understand this choiceA device that sends out a wave of fire, attacks enemies, and leaves the wielder’s weapon coated in fire.
Understand this choiceA heavy axe that deals punishing blows and can completely break wooden shields and an enemy’s guard.
Understand this choiceA Prosthetic Tool fitted with Robert’s Firecrackers that releases an explosive flash.
Understand this choiceA tool fitted with Gyoubu’s Broken Horn that performs far-reaching thrust attacks and drags enemies toward the wielder.
Understand this choiceA Prosthetic Tool loaded with a Mist Raven feather, with Aged Feather and Great Feather variants listed as upgrades.
Understand this choiceAn indestructible iron-ribbed umbrella fitted to the Prosthetic Arm; using it costs Spirit Emblems.
Understand this choiceA blade-based Prosthetic Tool that allows a quick series of attacks together with the sword.
Understand this choiceA large-fan Prosthetic Tool that costs Spirit Emblems to use, with Double Divine Abduction and Golden Vortex listed as upgrades.
Understand this choiceA Prosthetic Tool created by fitting a slender finger to the Prosthetic; Mountain Echo and Malcontent are listed as upgrades.
Understand this choiceThe upgrade page says progression proceeds through a tree: each upgrade requires a previous upgrade, and access can also depend on materials and game progression.
The upgrade page says Gyoubu Oniwa must be defeated to obtain the Mechanical Barrel used to upgrade Prosthetic Tools.
The source says fully upgrading all tools in one playthrough is impossible because the full upgrade requirement is 10 Lapis Lazuli while only 6 can be acquired per playthrough, subject to its stated ending condition.
A reference to ten named Prosthetic Tools and their source-described functions in Sekiro: Shadows Die Twice. The sources also describe installation, upgrades, and upgrade progression generally. They do not provide detailed effects for every named upgrade path, combat arts, or skills.