Show HN: Tesseract – 3D architecture editor with MCP for AI-assisted design

Hey HN. I'm David, solo dev, 20+ years shipping production systems. I built Tesseract because AI can analyze your codebase, but the results stay buried in text. Architecture is fundamentally visual — you need to see it, navigate it, drill into it. So I built a 3D canvas where AI can show you what it finds. Tesseract is a desktop app today (cloud version coming) with a built-in MCP server. You connect it to Claude Code with one command: claude mcp add tesseract -s user -t http http://localhost:7440/mcp I use it for onboarding (understand a codebase without reading code), mapping (point AI at code, get a 3D diagram), exploring (navigate layers and drill into subsystems), debugging (trace data flows with animated color-coded paths), and generating (design in 3D, generate code back). There's also a Claude Code plugin (tesseract-skills) with slash commands: /arch-codemap maps an entire codebase, /arch-flow traces data paths, /arch-detail drills into subsystems. Works with Claude Code, Cursor, Copilot, Windsurf — any MCP client. Free to use. Sign up to unlock all features for 3 months. It's early but stable. I've been dogfooding it on real projects for weeks and it's ready for other people to try. Demo video (1min47): https://youtu.be/YqqtRv17a3M https://youtu.be/YqqtRv17a3M Docs: https://tesseract.infrastellar.dev/docs https://tesseract.infrastellar.dev/docs Plugin: https://github.com/infrastellar-dev/tesseract-skills https://github.com/infrastellar-dev/tesseract-skills Discord: https://discord.gg/vWfW7xExUr https://discord.gg/vWfW7xExUr Happy to discuss the MCP integration, the design choices, or anything else. Would love feedback.