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Show HN: Composer – AI architect / MCP for software architecture diagrams (usecomposer.com)
8 points by olivergrabner 80 days ago
Hi everyone!

I built Composer, which is a tool turns your ideas into architecture diagrams. You can also use MCP to turn your EXISTING codebase into a visual diagram!

It connects to all possible tools using MCP (Claude Code, Codex, OpenCode, etc.)

The goal was to make system design easier and to be able to draw out what I wanted to make before I started / to explain to others.

Its currently live at usecomposer.com and free!

I’d love feedback on whether it feels useful for real projects and where it breaks down. :) Thank you

7 comments

This looks pretty good. Any plans to have sub-graphs? So if your app has multiple services, each service would have a separate graph and you link between them?
Thank you! And yes, I was thinking of adding different levels of complexity since it could get messy with alot of nodes.. I’m adding that feature very soon
LGTM!
It looks good. But I have to ask a lot of questions before finishing a diagram. Could we improve it?
Good point! I got alot of feedback like that. I've updated the model to ask less questions and build more before iterations
Solid stuff, love it!
How wonderful!
Looks good to me
Thank you!
LOVE IT!!~ ^^