That is, they require good taste and opinionated API design first, porting skills second. The SDK for each language ends up being substantially different.
Frontier models are not very good at this yet. I've tried. Ultimately I couldn't justify the effort when there are other workflow engines out there.
Unfortunately it appears someone vibe-coded a port of the Java SDK for .NET and namesquatted the `Dbos.Transact` package on NuGet [1], making it look like an official SDK. It's also not a very good port, mirroring the Java implementation instead of using idiomatic C#.
If you ever plan on releasing a .NET library, I suggest opening up a dispute resolution [2] with the owner (it really is just an email to the guy, CCing NuGet support) and reserving the `Dbos` prefix [3].
[1]: https://www.nuget.org/packages/Dbos.Transact/0.0.0-alpha.0.4... [2]: https://learn.microsoft.com/en-us/nuget/nuget-org/policies/d... [3]: https://learn.microsoft.com/en-us/nuget/nuget-org/id-prefix-...