I think a simple Python script that uses our intpacking routines would be helpful.  E.g.

 python intencode.py 123456

 python intdecode.py e305e6d4

(I'm not tied to these script names).  Or perhaps more generally, pack/unpack a set of keys (values) according to a format:

  python  wtpack.py  iiS  123456 321 "a string"

  python  wtunpack.py  iiS  e305e6d483616263