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Semantic Kernel

SDKs & frameworks

Microsoft's SDK for AI agents in C#, Python and Java.

Website
Base URL
https://api.ultragpt.pro/v1
API format
OpenAI Chat Completions
Models
Ids, prices & context
Fill the guide with your values

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Setup

  1. 1Register OpenAI chat completion with a custom endpoint https://api.ultragpt.pro/v1.
// dotnet add package Microsoft.SemanticKernel
#pragma warning disable SKEXP0010
var kernel = Kernel.CreateBuilder()
    .AddOpenAIChatCompletion(
        modelId: "grok-4.7",
        endpoint: new Uri("https://api.ultragpt.pro/v1"),
        apiKey: Environment.GetEnvironmentVariable("ULTRAGPT_API_KEY"))
    .Build();
Console.WriteLine(await kernel.InvokePromptAsync("Hello!"));
Tips
  • Any model id from Models works; suffixes like :online (web search) and :nitro work too.
  • Give each tool its own key with a spend limit, so usage shows separately in Activity.
  • Something off? Error codes · Support