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dotnet/yarp

A .NET toolkit for building high-performance HTTP reverse proxy servers that can be customized for specific deployment needs.

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What is it?

YARP (Yet Another Reverse Proxy) is a toolkit for building reverse proxy servers in .NET on top of the ASP.NET Core infrastructure. It is distributed as a library and project template, so developers assemble their own proxy rather than configuring a fixed binary.

The main design goal is customizability. Its request pipeline and modules can be extended, and routes and clusters can be set through configuration files or through an in-process configuration API. This suits teams that manage proxy configuration from their own backend systems instead of static files.

The project started as a collaboration among internal Microsoft teams that were building reverse proxies for their services. It is developed in the open under the dotnet organization, with getting-started documentation on Microsoft Learn.

Key features

  • 01Built on ASP.NET Core and .NET infrastructure in C#.
  • 02Extensible request pipeline with customizable modules.
  • 03Supports configuration files and a programmatic in-process configuration API.
  • 04Distributed as a library and project template for building custom proxy servers.

Use cases

  • Building a custom reverse proxy or API gateway for .NET services.
  • Routing traffic to backend services with configuration managed by an internal system.
  • Adding custom logic such as authentication or request transformation to proxied traffic.

Quick start

  1. 1

    Read the official getting started docs

  2. 2

    Build the repo on Linux or macOS (the script downloads the .NET SDK)

    build.sh

Things to know

  • It ships as a library and project template, so customizing it requires .NET development knowledge.

Topics

#reverse-proxy#dotnet#csharp#http#aspnet-core#gateway

FAQ

What is yarp?
A .NET toolkit for building high-performance HTTP reverse proxy servers that can be customized for specific deployment needs. YARP (Yet Another Reverse Proxy) is a toolkit for building reverse proxy servers in .NET on top of the ASP.NET Core infrastructure. It is distributed as a library and project template, so developers assemble their own proxy rather than configuring a fixed binary.
Is yarp free to use? What license does it have?
yarp is open source under the MIT license. Check the license terms before using it in commercial products.
Is yarp still maintained?
Actively maintained. The last commit to yarp was on Oct 19, 2026.
What can I use yarp for?
Building a custom reverse proxy or API gateway for .NET services. Routing traffic to backend services with configuration managed by an internal system. Adding custom logic such as authentication or request transformation to proxied traffic.
How do I install yarp?
Read the official getting started docs Build the repo on Linux or macOS (the script downloads the .NET SDK): build.sh
Where can I get yarp?
The source code and installation instructions are on GitHub: https://github.com/dotnet/yarp

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