Using an intermediate code layer between tyk gateway and api

I want to add an additional code layer between the tyk api gateway and my api endpoints such that all the traffic in between the gateway and the api should go through that .dll or the code layer.

For reference, I am using tyk with my .Net Web API(s)

Hi!

You can use write your own gRPC plugins and use them with Tyk for this purpose: //tyk.io/docs/plugins/supported-languages/rich-plugins/grpc/custom-auth-dot-net/