Local.
Processing runs on Cloudflare's European infrastructure. An open-source model (Kimi K2.6), hosted by Cloudflare in Europe. No database. No storage. No application logs.
Private.
Your bank data does not leave your browser in original form. Names, account numbers, and amounts are anonymised locally before anything is sent for analysis. You see exactly what gets transmitted before clicking "Send."
Open source.
The entire codebase is public on GitHub. The anonymisation rules. The Cloudflare Worker. The JSON schemas. Have your IT review.
github.com/rouxdutoit/anonymiser