Diagram
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How to make and share diagrams with Claude app

Claude app (Anthropic’s Claude on the web and desktop) can draw architecture diagrams, flowcharts, and sequence diagrams, but on its own they end up as text in the chat or a file only you can open. Connect Diagram once and every diagram Claude app makes becomes a link you can share, which stays current as the diagram changes.

Set up Claude app, freeHow Diagram works

1. Connect Diagram to Claude app

In claude.ai or the Claude desktop app: Customize → Connectors → + → Add custom connector. Name it Diagram, paste this URL, leave Advanced settings empty, and click Add:

https://diagram.la/mcp

Sign in once: After adding it, click Connect next to Diagram: sign in with Google and click Allow.

Works on every Claude plan (Free allows one custom connector). On Team and Enterprise, an org owner adds custom connectors under Organization settings → Connectors.

2. Ask for a diagram

In a new chat, click + → Connectors and turn on Diagram, then describe what you want in plain words. For example:

Claude app draws it and gives you a link.

3. Share the link

Paste it in Slack, a pull request, or a doc. Diagrams start private; add people to the project, share it with your team, or make one public. When it changes, ask Claude app to update it: the link stays the same and every version is kept.

Questions

Is Diagram free to use with Claude app?
Yes. Diagram is free for 5 projects, and there's nothing to install.
Who can see my diagrams?
Only you, until you share. Add people to a project, share it with your team through an org, or make a single diagram public so anyone with the link can open it.
What happens when the diagram changes?
Ask Claude app to update it. The new version lands at the same link, and every earlier version is kept.
Does Claude app need an API key?
No. Claude app signs in to Diagram with your Google account in the browser.

Diagrams in other tools