Claude Code mod

mermaid-pane

Draws mermaid blocks in Claude's replies as pictures right in the conversation: navy nodes with light-blue borders on a transparent background, download and copy-image buttons.

1 starsPane & dashboard mods Plugin marketplaceValidates on Claude Code 2.1.316 Source

Install

Inside Claude Code
/plugin marketplace add youngOman/pill-mods
/plugin install mermaid-pane@pill-mods

Mods 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, reads files, draws
Draws in
AssistantMessage
Hooks
turn.completeui.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.
Claude Code docs

Details

Repository
youngOman/pill-mods
Folder
mods/mermaid-pane
Marketplace
pill-mods
Author
youngOman
Type
Pane & dashboard mods
Last updated
30 October 2026
Listed in
awesome-claude-code-mods

FAQ

What is mermaid-pane?

Draws mermaid blocks in Claude's replies as pictures right in the conversation: navy nodes with light-blue borders on a transparent background, download and copy-image buttons. It is a mod for Claude Code, from youngOman/pill-mods on GitHub.

What can the mermaid-pane mod access?

Its widest reach is "writes or runs" (runs processes, writes files, reads files, draws). It draws in AssistantMessage. Like any mod, it runs with your permissions.

How do I install mermaid-pane?

Inside Claude Code (v2.1.287 or later), run /plugin marketplace add youngOman/pill-mods and then /plugin install mermaid-pane@pill-mods.

Is mermaid-pane popular?

youngOman/pill-mods has 1 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 30 October 2026.

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