Morphing Multi-Tool

Right-clicking a block with the tool morphs it into the tool class that block requires, so the correct harvest tool appears without an inventory swap. Tools that are right-clicked on machines, such as wrenches, are morphed as well. Picking up the multi-tool while it is morphed into another tool changes it back, and dropping it does the same.

The tool holds only one tool class at a time, so it cannot act as two pickaxes or two spades. Modded tools that share a class with vanilla tools, such as hammers and pickaxe excavators, are recognized, and tools with their own class, such as the Thermal Expansion shovel and sickle, work like normal tools. Modded tools with no class can be added to the morph list. The mod is credited to Munchy907 and asks players to refer to it as Morph-O-Tool.

Morphing Multi-Tool is client and server, so the server and every player need it. It is published for Forge only, in a single build, 1.0.0 for 1.12.2, released under the Creative Commons Attribution Non Commercial Share Alike 4.0 license, which is not open source. Source code and an issue tracker are public.