This package can automatically add tags to any measurement made. This is done using the tag providers configured in config/open-telemetry.php. A tag providers is any class the implements the Spatie\OpenTelemetry\Support\TagProviders\TagProvider interface.
This tag provider can be resolved when a trace starts by adding it the trace_tag_providers key in the config/open-telemetry.php config file. If that tag provider should be executed before each span (so each time you can Measure::start()), you should add it to the span_tag_providers key in the config file.