There are a couple of preferences associated with the Remote Agent:
Defines the remote protocols that are active. Available protocols are,
WebDriver BiDi (
1), and CDP (
2). Multiple protocols can be activated
at the same time by using bitwise or with the values. Defaults to
in Nightly builds, and
Limits the Remote Agent to be allowed to listen on loopback devices, e.g. 127.0.0.1, localhost, and ::1.
Defines the verbosity of the internal logger. Available levels
are, in descending order of severity,
Fatal. Note that the value is
Defines whether long log messages should be truncated. Defaults to true.
By default remote protocols attempts to set a range of preferences deemed
suitable in automation when it starts. These include the likes of
disabling auto-updates, Telemetry, and first-run UX. Set this preference to
false to skip setting those preferences, which is mostly useful for internal
Firefox CI suites.
The user preference file takes precedence over the recommended preferences, meaning any user-defined preference value will not be overridden.