Stop guessing how AI works in .NET.
Download the code and run it yourself.
Three complete, working projects - Semantic Search, RAG System, and MCP Server - built with .NET 10 and running entirely on your machine. Plus 5 free Claude Code skills that make Claude write production-grade .NET for you.
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Real AI, running on .NET
Click a capability to watch it run locally.
Now included: 5 free Claude Code skills for .NET
Five Claude Code skills that make Claude write production .NET instead of generic C#: an EF Core query optimizer (N+1, projections, AsNoTracking), a Minimal API scaffolder, an integration-test writer (Testcontainers, no in-memory fakes), a Result-pattern refactor, and a modern .NET code reviewer.
Free and open-source. The full set - 44+ skills, 7 agents & CLAUDE.md templates - lives inside the .NET AI ToolKit community.
Three self-contained modules
Each one is a real, runnable project with a companion article.
Semantic Search in .NET
Build a search that understands meaning, not just keywords. Uses Microsoft.Extensions.AI, Ollama for local embeddings, and pgvector on Neon Serverless Postgres to store and query vectors.
RAG System in .NET
Ground your AI responses in real data. Ingest documents, embed them, retrieve the relevant chunks at query time, and feed them to an LLM - so the AI answers from your data, not from guesswork.
MCP Server in .NET
Expose your .NET services as tools that any AI client can call. GitHub Copilot, Claude, and Cursor connect to your server and use your data - without you rewriting anything per client.
Get the free source code
Enter your email and I'll send you the full source code for all three modules - Semantic Search, RAG System, and MCP Server - ready to clone and run.