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Nearbycoder

Josh Hamilton
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Layoff Log

Week 3: SoloAgent AI harness experiment

Built SoloAgent to understand AI harness internals in modern coding workflows by implementing the workflow stack directly.

2026-03-03 Week 3 building
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TypeScriptElectronReact 19TanStack AInode-ptySQLite

This Week 3 build is SoloAgent, a desktop AI harness experiment for AI-assisted coding workflows.

SoloAgent screenshot

There is no live site yet, only the repository.

What I built

Repo pull-down tool audit

I pulled the repo and inspected the current manifests/docs to verify the tooling.

  • App/runtime: Electron 39, React 19, TypeScript 5, Node.js 22+, SQLite
  • AI runtime: @tanstack/ai, @tanstack/ai-react, @tanstack/ai-openai, @tanstack/ai-client
  • Terminal/diff: node-pty, ghostty-web, @pierre/diffs
  • UI/state: Tailwind CSS 4, Radix UI, lucide-react, motion, zustand
  • Quality/build: electron-vite, Vite, electron-builder, ESLint, Prettier, Vitest
  • External CLIs: Git, GitHub CLI (gh), Codex CLI

Why this mattered

This was a practical way to map where AI harness complexity actually sits: state boundaries, tool-call UX, terminal process management, and git operations that hold up under real project workflows.