Does it support parameter keys ?

[SeleDreams]

Hi, I have the goal of developping an open source facial motion capture software for vtubers relying on models created via COA Tools rather than Live2D with the goal of giving an open source Live2D alternative for vtubers to avoid the live2d monopoly in the industry, however, there are some things I am wondering about.
Blender COA tools relies on a boneset for body movement, and does have mesh deformation support, however I am wondering about the key parameters. a bit comparable to the shape keys of 3d model that basically rely on a value to change the position of vertices
Live2D relies a lot on these parameters to allow for facial capture by linking these settings to movements of the head making it easier to reproduce the facial expressions on the character.
Does Blender COA support it and can export it to a format I could then read in Godot Engine ?