A utilities and services package for OpenAI in .NET (streaming, structured, etc.).

Installing the package

Install the package using the following command:

dotnet add package kvandijk.AI

Setup

Environment variables

Create a deployment in Azure OpenAI and set the following environment variables in your development environment or hosting platform:

• OPENAI_ENDPOINT: Your OpenAI endpoint URL.
• OPENAI_DEPLOYMENT: Your deployment name for the OpenAI model.
• OPENAI_EMBEDDING_DEPLOYMENT: Your deployment name for the OpenAI embedding model.
• OPENAI_KEY: Your OpenAI API key.

Program.cs

Add the following line to your Program.cs file to register the completion service:

builder.Services.AddCompletionService();

How to use

Example streaming completion

await foreach (var chunk in service.GetCompletionStreamAsync("Write a short story of 100 words.")) { Console.Write(chunk); }

Example structured completion

var typed = await service.GetStructuredCompletionAsync<ClassificationResult>("""" Categorise: 'Invoice from Contoso for Q3 services'. Categories: invoice, receipt, contract, other. Include 1-3 short reasons.Return as JSON. """"); Console.WriteLine(System.Text.Json.JsonSerializer.Serialize(typed, new System.Text.Json.JsonSerializerOptions { WriteIndented = true }));