Ocelot

Ocelot is a .NET API gateway for service-oriented and microservices systems that need a single point of entry. It sits in front of downstream services and works with anything that speaks HTTP(S) on platforms supported by ASP.NET Core.

Under the hood it is an ordered set of ASP.NET Core middlewares: requests are shaped from configuration, rebuilt as a downstream request, sent on, and the response is mapped back to the client. Core capabilities include routing, request aggregation, metadata, delegating handlers, and middleware injection for custom behavior.

Ocelot targets net8.0, net9.0, and net10.0 and installs as a NuGet package or through the .NET CLI, dropping into an existing ASP.NET Core application. It is released under the MIT License.