About Custos

Custos (Latin for “guardian”) helps people notice sensitive financial information before sharing it with AI services, then choose to block, redact, generalize or allow it. The person whose data is at stake makes the disclosure decision. Custos is local-first and candid about the limits of browser-based protection.

Last updated: 6 November 2026. Starter text — have it reviewed for your actual operations before public launch.