# Search Engine Configuration

The search engine configuration is a mapping that is used to determine the
list of search engines for each user. The mapping is primarily based on the
user's region and locale.

## Configuration Management

The configuration is delivered and managed via {doc}`remote settings </services/settings/index>`. There are
{searchfox}`dumps <services/settings/dumps/main/>` of the configuration
that are shipped with the application, for use on first startup of a fresh profile,
or when a client has not been able to receive remote settings updates for
whatever reason.

### Remote Settings Bucket

The remote settings bucket for the search engine configuration list is
`search-config-v2`. The version that is currently being delivered
to clients can be [viewed live]. There are additional remote settings buckets
with information for each search engine. These buckets are listed below.

- [search-config-icons] is a mapping of icons to a search engine.
- [search-config-overrides-v2] contains information that may override engines
  properties in search-config-v2.

## Configuration Schema

The configuration format is defined via a [JSON schema]. The search engine
configuration schema is {searchfox}`stored in mozilla-central <toolkit/components/search/schema/>` and is uploaded to the
Remote Settings server at convenient times after it changes.

An outline of the schemas may be found on the [Search Configuration Schema] page.

[json schema]: https://json-schema.org/
[search configuration schema]: SearchConfigurationSchema.md
[search-config-icons]: https://firefox.settings.services.mozilla.com/v1/buckets/main/collections/search-config-icons/records
[search-config-overrides-v2]: https://firefox.settings.services.mozilla.com/v1/buckets/main/collections/search-config-overrides-v2/records
[search-default-override-allowlist]: https://firefox.settings.services.mozilla.com/v1/buckets/main/collections/search-default-override-allowlist/records
[viewed live]: https://firefox.settings.services.mozilla.com/v1/buckets/main/collections/search-config-v2/records