Agent Framework builder for .NET

Use this skill as the entry point for .NET Agent Framework application work. Choose the smallest framework pattern that preserves the required behavior, load only the relevant references, and validate against current APIs instead of relying on remembered preview-era syntax.

Workflow

1. Inspect the existing solution: target frameworks, SDK version, package management (central package management or per-project), and installed Microsoft.Agents.AI.* packages and versions.
2. Choose the simplest matching path from the table below.
3. Resolve design questions only when they materially change the implementation.
4. Read only the linked reference for the selected path.
5. Implement the smallest coherent change and run the narrowest validation that exercises it.

Core abstractions