Author, import, safely edit, preview, repair, and validate deterministic Mermaid diagrams and multi-diagram Markdown, including architecture, Gantt, timeline, and Kanban builders, with optional local rendering when requested.
Install
- 1Add it in ChatGPT
Open Plugins in the ChatGPT sidebar (web or desktop), search for “Mermaid Diagrams” and select +. You'll be asked to sign in to any connected service on first use. Then type @ in a chat to call it.
Skills 1
- Mermaid Diagrams
Author, edit, and preview Mermaid documents
Things to ask
- “Turn this architecture into a validated multi-diagram Mermaid document with a structural preview.”
- “Safely edit one marked Mermaid fence in this Markdown file without changing the surrounding bytes.”
- “Create a portable Gantt, timeline, or Kanban diagram for this plan.”
Disconnect or uninstall
- 1In ChatGPT
Disconnect an account in Settings → Apps or Plugins. To remove the plugin itself, open Mermaid Diagrams in the Plugin Directory and select Uninstall plugin. Uninstalling can disconnect every account connected through it, and plugins your workspace installs may not offer the option.
- 2In Codex
Run /plugins in the Codex CLI, select the plugin and uninstall it, or press Space to turn it off.
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