Hello.

I got asset with one input.

Once I plug geometry into it it scatters points and generate new geometry from those points. However, once I load asset into Unity, I can't see any geometry generated because there is no MeshFilter on it. And when I add it manually I don't know what to specify in MeshFilter mesh field.

If I create similar asset but the geometry on which points are scattered is embedded into it, not plugged thru input, it works as expected, because MeshFilter is generated and data filled properly.

Is there possibility to generate data for MeshFilter from inside of the asset?

I'm not sure I understand what your asset is doing. What kind of input do you give it in Unity? If you try the default GameObject > 3D Object > Sphere does it work?

Maybe upload the an example asset showing what you want to do?