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MacVis — Local-First AI Desktop Assistant

A fully-agentic macOS desktop app that gives AI full access to your Mac — bash, filesystem, web search, and MCP integrations. Bring-your-own-key: Anthropic, OpenAI, OpenRouter, Gemini, Groq, and Ollama. No backend, no telemetry, everything stays on your machine.

Role
Creator & Lead Engineer
Duration
Ongoing (open source)

The Challenge

Cloud agent platforms like ChatGPT and Claude Desktop are powerful but keep all data on remote servers, charge per-message, and can't access local files or run arbitrary Mac commands. Developers needed a local-first alternative with genuine system access.

Approach & Solution

Built a native macOS Electron app with a React + TypeScript frontend. The main process owns all I/O, AI calls, and tool execution — the renderer is pure UI communicating over a typed IPC bridge. Implemented live API key validation that hits each provider's /models endpoint, persistent chat history stored as flat JSON, and a Projects view that auto-discovers code the agent creates.

Results & Impact

  • Full bash/filesystem/web-search access out of the box with zero config
  • Live key validation across 6 providers — Anthropic, OpenAI, OpenRouter, Gemini, Groq, Ollama
  • Persistent memory: every session saved to ~/.macvis/sessions/ and reloaded on launch
  • Projects view auto-discovers and runs agent-created code (HTML, Node, Next.js, Python)
  • MCP-ready with first-class config for GitHub, Supabase, Vercel, Railway, Slack
  • 100% local-first — no analytics, no telemetry, no remote logging

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