All respect to your project.
We are also aware of this free version too: https://github.com/ymgve/bitcoin_fork_claimer

The WS service is for those that don't have the technical understanding or the time to use these tools.
Giving an empty seed that contains fork value to us or anyone else is very sketchy, which is why we have used a non-self moderating thread since the BTG days to show a transparent record of our service: https://bitcointalk.org/index.php?topic=2434261

All the best.