Claude Code mod
diagram-preview
Show Obsidian vault diagrams (.canvas, Excalidraw, draw.io, BPMN) as SVG in Claude Desktop side panes, with landscape/portrait and zoom
Install
git clone https://github.com/cbruyndoncx/claude-diagrams-renderer-mod.git
claude --plugin-dir ./claude-diagrams-renderer-mod/.The repo has no marketplace file, so load the plugin folder directly with --plugin-dir.
What it can access
- Reach
- L2Writes or runs: runs processes, drives Claude, reads files, reads env vars, reads mod state, draws
- Sees
- mcp__diagram-preview__open calls, Write|Edit calls
- Draws in
Pane- Hooks
session.startcommand.runtool.callui.render
From a static scan of the mod's code by awesome-claude-code-mods. It shows what the code asks for, not a security review.
How Claude Code mods work
- A mod is a plugin with a JavaScript or TypeScript module that runs inside Claude Code (version 2.1.287 or later). It can draw panes beside the transcript, a band above the prompt, buttons and toasts, restyle the spinner and tool rows, and watch or rewrite tool calls and prompts.
- It installs like any plugin: add its marketplace with /plugin marketplace add owner/repo, then /plugin install name@marketplace.
- Check what a mod can reach before installing: it runs with your permissions. Reach goes from drawing only, to reading files, to writing files or running processes, to the network. Run claude plugin validate on a clone to list its hooks and calls without running it.
- Turn one off from the Installed tab in /plugin, or start Claude Code with --safe-mode to skip every customization for a session.
Details
- Repository
- cbruyndoncx/claude-diagrams-renderer-mod
- Folder
.- Author
- BRNCX
- License
- MIT
- Last updated
- 3 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is diagram-preview?
Show Obsidian vault diagrams (.canvas, Excalidraw, draw.io, BPMN) as SVG in Claude Desktop side panes, with landscape/portrait and zoom It is a mod for Claude Code, from cbruyndoncx/claude-diagrams-renderer-mod on GitHub.
What can the diagram-preview mod access?
Its widest reach is "writes or runs" (runs processes, drives Claude, reads files, reads env vars, reads mod state, draws). It sees mcp__diagram-preview__open calls, Write|Edit calls. It draws in Pane. Like any mod, it runs with your permissions.
How do I install diagram-preview?
Clone cbruyndoncx/claude-diagrams-renderer-mod and start Claude Code with --plugin-dir pointing at the mod's folder (.).
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