Last month I spent some time building nano-harness, a small personal AI harness.
Not a framework, not the final agent platform that will replace everything and save humanity, or whatever people are saying this week.
Just a local-first desktop app to understand how these systems actually work when you stop talking about agents in abstract terms and start connecting the pieces yourself.
That was the real goal. I wanted to learn the shape of the thing. Provider adapters, local state, runs, tool calls, approvals, events, sessions, memory ideas, MCP, skills, all the boring plumbing behind the nice demos.
And like it usually happens, the project went further than planned.
