Claude Code mod
diagrams
Pins the diagrams Claude draws to a chip above the prompt: expand it in place, open it full screen or in the browser, and see it as a rendered picture
Install
/plugin marketplace add tomasvarga/claude-code-diagrams
/plugin install diagrams@claude-code-diagramsMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L2Writes or runs: runs processes, writes files, writes the clipboard, reads files, reads env vars, reads mod state, draws
- Sees
- mcp__diagrams__show_diagram calls
- Draws in
AbovePromptPane- Hooks
session.startprompt.composeturn.startturn.completetool.callui.closecommand.runui.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
- tomasvarga/claude-code-diagrams
- Folder
.- Marketplace
claude-code-diagrams- Author
- Tomas Varga
- License
- MIT
- Last updated
- 8 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is diagrams?
Pins the diagrams Claude draws to a chip above the prompt: expand it in place, open it full screen or in the browser, and see it as a rendered picture It is a mod for Claude Code, from tomasvarga/claude-code-diagrams on GitHub.
What can the diagrams mod access?
Its widest reach is "writes or runs" (runs processes, writes files, writes the clipboard, reads files, reads env vars, reads mod state, draws). It sees mcp__diagrams__show_diagram calls. It draws in AbovePrompt, Pane. Like any mod, it runs with your permissions.
How do I install diagrams?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add tomasvarga/claude-code-diagrams and then /plugin install diagrams@claude-code-diagrams.
Is diagrams popular?
tomasvarga/claude-code-diagrams has 1 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 8 October 2026.
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