MediatR.Extensions.Microsoft.AspNetCore.Mvc is an extension that marries MediatR to ASP.NET Core in a way that keeps MediatR totally agnostic of how it is being used, while providing you with tools to shorten the amount of repetitive Mvc controller-related code to a minimun.
Easily configurable, it wraps each MediatR request in a constructed generic controller and provides several flexibility points.
If you have a lot of actions in your controllers reduced to something as rudimentary as...
public async Task<IActionResult> MyRequestAction(MyRequest request)
{
var response = await _mediator.Send(request);
return Json(response);
}... and you want to get rid of them, you may very well give this extension a try.
MediatR.Extensions.Microsoft.AspNetCore.Mvc version 1.0.0 lists MediatR 4.0.0 as a dependency, but it equally supports every version of MediatR up to 5.1.0