Launching today
Arcline
Open-source diagram canvas you and your agent edit together.
29 followers
Open-source diagram canvas you and your agent edit together.
29 followers
Arcline is a friendly, local-first diagram canvas for architecture and flow diagrams. Draw by hand, write diagrams as code with Mermaid, D2, Structurizr or OpenFlow DSL, or hand the canvas to your AI agent over MCP. Claude Code, Cursor, VS Code and Codex can read and edit the same document — every change is one undo step. No account, no cloud. Free and open source.
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Hey Product Hunt 👋 I built Arcline because diagrams and code keep drifting apart. Here you can sketch it, write it as code, or let your agent edit it — all on one local-first canvas. No account, no uploads, MIT licensed. Happy to answer anything!
Congrats on the launch, Mohit! Diagrams going out of date as the code changes is a real problem. Having the agent edit the same canvas over MCP, with each change as one undo step, is a really nice touch. Does it keep the diagram-as-code version and the hand-drawn layout in sync when you switch between them?
@shubhanshi_jangid1 thank you for review
I think this will be really helpful for the vibe coders to understand the architecture
@harini_mukesh thank you for review