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FusionAuth .NET Core Client

semver 2.0.0 compliant

If you're integrating FusionAuth with a .NET Core application, this library will speed up your development time.

Here's a small Example showing how to use this client: Example.cs

For additional information and documentation on FusionAuth refer to

Refer to the FusionAuth API documentation for request and response formats.

Supported Frameworks

  • .NET Standard 2.0, 2.1
  • .NET Core 2.1, 3.1
  • .NET 5


There are some tests. Most require a running FusionAuth instance.

To run them:

  • cd fusionauth-netcore-client-test/fusionauth-netcore-client-test
  • dotnet build && dotnet test # or, to run only a few
  • dotnet build && dotnet test --filter CorrectlyD

Questions and support

If you have a question or support issue regarding this client library, we'd love to hear from you.

If you have a paid edition with support included, please open a ticket in your account portal. Learn more about paid editions here.

Otherwise, please post your question in the community forum.


Bug reports and pull requests are welcome on GitHub at

If you find an issue with syntax, etc - this is likely a bug in the template. Feel free to submit a PR against the Client Builder project.


The code is available as open source under the terms of the Apache v2.0 License.