How should I get this value through DDD to async code in Akka HTTP

I'm trying to write an Akka HTTP webservice using domain-driven design but I'm struggling to pass technical data received by the webservice to the code doing the work inside a Future, namely a correlationId sent by the client to my webservice.

My understanding of DDD is that as a choice of implementation, the correlationId shouldn't appear in the domain:

package domain
trait MyRepository {
  def startWork(): Future[Unit]
}

To make it available to my implementation code without it being a parameter of the method, I'm thinking of using thread-local storage like org.slf4j.MDC or a ThreadLocal. However, I don't know if that would work or if several calls to the webservice would be handled by the same thread and overwrite the value.

Here is the implementation:

package infra
class MyRepository(implicit executor: ExecutionContextExecutor) extends domain.MyRepository {
  override def startWork(): Future[Unit] = {
    Future {
      val correlationId = ??? // MDC.get("correlationId") ?
      log(s"The correlationId is $correlationId")
    }
  }
}

And the route in my webservice:

val repo = new infra.MyRepository()
val route = path("my" / "path") {
  post {
    parameter('correlationId) { correlationId =>
      ??? // MDC.put("correlationId", correlationId) ?
      onComplete(repo.startWork()) {
        complete(HttpResponse(StatusCodes.OK))
      }
    }
  }
}

My question is twofold:

• Is my general design sound and good DDD?
• Would using org.slf4j.MDC or a ThreadLocal work or is there a better / more Akka-friendly way to implement it?