How to tell if a block at a location is solid or not

[pixlii]

Very simple question and there's probably just some obscure code that I can't find, but how can I tell if a block at a location (or just a material) is solid or not? Trying to make a climbing system where you can only grab onto solid blocks, if that helps at all.

 

[ARMcPro]

use raycasting and set the length to like 0.001 and change the tag to only detect solid blocks

 

[pixlii]

use raycasting and set the length to like 0.001 and change the tag to only detect solid blocks

proof that i'm stupid cuz i didn't think of this