Testing Extism https://github.com/extism/extism
Using the .NET Host SDK: https://extism.org/docs/integrate-into-your-codebase/dotnet-host-sdk/
Sample in repo: https://github.com/extism/extism/blob/main/dotnet/samples/Extism.Sdk.Sample/Program.cs
.NET WASI Support issue w Extism dotnet/runtime#65895 (comment)