Albedo Buffer

I know Reshade is for post-processing, but is there any easy way to access the albedo buffer? Since the depth buffer is available, I would assume it's possible, but I haven't been able to find anything online. 

I don't know if I understand you correctly, but if albedo you mean the color data, that's the backbuffer. The same data as you would capture if you take a screenshot.

If you by albedo mean just texture albedo without any other texture effect such as normal map and specular, then that's not something that is accessible through reshade. You have backbuffer and depthbuffer to work with