Header Rewrite for Mirrored Services

Hey y'all! I have a stack where I need to mirror requests to several services, and rewrite an authorization header for each mirror. Essentially, I have something sending requests that provide state information, and an arbitrary number of dev boxes that need to be able to see that state, but I need to rewrite the auth header when mirroring to be right for each of the dev boxes. Is this possible currently, or would it require changes to how mirroring works in Traefik? Thanks for any insight you can provide!

I don’t think mirroring has options for that (doc, reference).

You can create your own Traefik plugin in go as middleware, but you probably only have access to request URL and headers, but not to the body of a POST.