For programmers which need to consume C APIs ideally the tool is the standard compiler. Eeverything gets handled at compile time without the need for community-maintained cache of bindings. New language designers start with a C compiler which handles header files, then extend compiler to also parse NewLang files. The in-memory representation is loaded from both source types, without throwing away the C functionality. In NewLang there is some standard namespace and calling convention.

    @importc "stdio.h"
    num : I32 : 123456789
    fd : c:int : c:open(c:"file.txt", c:O_RDONLY)
    :: c:print("file:%d  number:%d\n", fd, num)

But nothing more, everything else is handled by compiler.