Is there a way to set context for schema metadata on schema definition?

so as i’ve disclosed on other topic( i’m working on a library that uses ecto schemas a lot. I’ve been looking for ways to set the context metadata for a schema on the schema definition. Looking at the code doesn’t seem to be possible. i was thinking something like @schema_context just like the @schema_prefix. I understand that I can use Ecto.put_meta/2 for that, but that only works after the schema is already loaded, I wanted to use that to introspect some behavior of the library.