I built MandoCode, an open source CLI coding agent in .NET that runs against local Ollama models. No API keys, nothing leaves your machine (Ollama cloud models work too if you want them). It reads, edits, searches, plans, and browses the web across your codebase, and it supports MCP and Skills.
Install with dotnet tool install -g MandoCode.
I found semantic Kernel great to give me the ability to just go and build on .NET C#. Lots of more work to do!