PostSharp SDK

PostSharp SDK is our low-level API. It allows to perform low-level modifications of .NET assemblies. Similar tools include Mono Cecil and Fody but PostSharp SDK does actually much more. We believe that PostSharp SDK is the best in its category.


A large part of this API can be used for free with PostSharp Community and it will be enough to achieve anything you could complete with an alternative product. However, to integrate with the aspect weaver, you will need a PostSharp Framework license.


  • PostSharp SDK is for experts. It typically takes weeks before a PostSharp employee becomes productive with this API.
  • PostSharp SDK is poorly documented — yet probably better than alternative tools.
  • We do not provide support on PostSharp SDK.