This exists... but you're going to be disappointed by the answer. It's the tables in the book.
There's no automatic tool like this, because how you want to use it can't be automatic. There is no way to "just" put in the dice rolls, and get the results, because there are many tables linked together, each requiring different rolls be made. At best, there could be a tool that let you input the numbers from a manual roll on just the first table (the "what category of magic item" table), but why would anyone ever create a tool that automated every roll except the first one?
The tables are easy to use. If you don't like or can't use any of the existing automatic item generators, just use the tables manually. They're fast enough that it takes a fraction of the time it takes to look online for something that doesn't exist.