Fast Sculpt And Paint Assistant, built by sum studio, is a Blender add-on focused on speeding up sculpt and paint work. It maps various sculpt and paint operations to a single key, so triggering them no longer means moving your fingers across the keyboard.
The add-on works with Blender versions 3.1 through 5.0 and is released under the GPL license. Documentation is provided, and a demo video is available.
On the Superhive marketplace it has passed 200 sales and holds a top rating from a small number of reviews, and the listing dates back nearly three years. It's a compact, single-purpose tool aimed at artists who work in Blender's sculpt and paint modes and want fewer keystrokes for common operations.