C#

Coming Soon

The C# runtime for Prompty v2 is under development. The type system is already generated from the TypeSpec schema — runtime implementation is the next step.

Current Status

The Prompty TypeSpec schema emitter generates C# model classes at runtime/csharp/Prompty.Core/Model/. These provide the typed data model for .prompty files but the runtime pipeline (loader, renderer, parser, executor, processor) is not yet implemented.

What’s Generated

The emitter produces C# classes for all schema types:

• Prompty — root type
• Model, ModelOptions — model configuration
• Connection and subtypes (ApiKeyConnection, ReferenceConnection, etc.)
• Property, ArrayProperty, ObjectProperty — input/output schemas
• Tool and subtypes (FunctionTool, McpTool, OpenApiTool, CustomTool)
• Template, Format, Parser — template configuration

Planned Architecture

The C# runtime will follow the same four-stage pipeline as Python and TypeScript:

1. Renderer — Jinja2-compatible template rendering (Scriban or DotLiquid)
2. Parser — Role marker parsing → message list
3. Executor — Microsoft Foundry SDK / OpenAI SDK integration
4. Processor — Response extraction and structured output

Contributing

If you’re interested in helping build the C# runtime, see the Contributing guide and check the GitHub issues for C#-related tasks.