BlenderKit supports by now sculpting and painting brushes.

Check your brush is working perfectly (has proper alpha, spacing,...).

Generate preview:

  • you can use a multiresolution plane or sphere for sculpting brushes.
  • Make a brushstroke, possibly as simple as possible, as big as possible.
  • Save your rendered image.
  • Go back to sculpt mode with the brush, go to options -> appearance, and check custom icon ON, and set path to your preview image.

Now you can fill in the tags for the brush in BlenderKit upload - brushes, and upload your brush for validation.

You can speed up the creation of new brushes by using brushes from BlenderKit, just changing the alpha of them.