gecko-dev/third_party/rust/suggest/README.md

Suggest

The Suggest Rust component powers the Firefox Suggest feature.

This component currently supports the basic Suggest experience only. The basic experience shows suggestions for sponsored and web content from a canned dataset. The component downloads the dataset from Remote Settings, stores the suggestions in a local database, and makes them available to the Firefox address bar. Because matching is done locally, Mozilla never sees the user's query.

The opt-in "Improved Firefox Suggest Experience", which sends user queries to a Mozilla-owned proxy server for server-side matching, is not currently supported.