diagram-gen vs codebase-visualizer
diagram-gen is no longer listed on any marketplace we read: these are its last known data, as of 2026‑10‑18.
diagram-gen is a plugin bundle for AI coding tools published by barnburner121. No marketplace we read lists it any more. codebase-visualizer is a plugin bundle for AI coding tools published by belugatempo-dot. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). As of our marketplace pass on 2026-10-21. A plugin in this pair is no longer listed on any marketplace we read, so search engines are asked not to index the page.
Where each is published
| Marketplace |  codebase-visualizer | |
|---|---|---|
| Community marketplace barnburner121/claude-plugin-marketplace | Removed on 2026-10-18 Version: 1.0.0 Forks (GitHub): 0 Stars (GitHub): 3 Not marked · First seen |
Not listed |
| Claude Code: claude-plugins-community | Not listed | Listed Version: 2.0.0 Forks (GitHub): 0 Stars (GitHub): 2 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | diagram-genno longer listed · | codebase-visualizer |
|---|---|---|
| Marketplaces that list it (differs) | 0 | 1 |
| Stars (GitHub) (differs) | 3 | 2 |
| Forks (GitHub) | 0 | 0 |
| Last release | Not published | Not published |
| Where it runs (differs) | On your machine (@barnburner121/plugin-hub-mcp) | Installs as a plugin bundle |
| Transport | Not stated | Not stated |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 2 | 1 |
| Licence | MIT | MIT |
| Repository (differs) | github.com/barnburner121/claude-plugin-marketplace | github.com/belugatempo-dot/codebase-visualizer |
| Changes in the last 7 days (differs) | 2 | 0 |
| First seen (differs) | 2026-10-14 | 2026-10-11 |
Lines where the two differ have a tinted background and bold values. No value is marked better or worse: a plugin no marketplace lists any more is shown with its last known data, which we do not rank against current figures.
What to use instead of diagram-gen
Plugins still listed whose own names, descriptions, tools and skills are closest in meaning to it. Comparable, not endorsed.
-
Generate Mermaid architecture diagrams showing system components, layers, and data flows
-
Automatic creation of codebase diagrams for use in tldiagram.com
-
Create, validate, and render Mermaid diagrams
-
Diagram authoring skills — Mermaid diagrams written to standalone files, rendered with mermaid-cli, and visually checked by a validator subagent before they go into a plan, an MR…
-
Render, validate, encode/decode PlantUML diagram-as-code; 22 diagram types. Free, no auth.
-
Excalidraw diagramming toolkit — say 'diagram this repo' for zero-config architecture diagrams, plus data flows, parameter traces, and PNG/SVG/URL export
What each says it does
diagram-gen
Generate Mermaid/PlantUML diagrams from code
codebase-visualizer
Transform any codebase into an interactive visual HTML guide with animated architecture diagrams, story-mode narrative, data flow animations, and bilingual CN/EN support. Generates a single self-contained HTML file that a 10-year-old can understand.
How to run each
diagram-gen
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
codebase-visualizer As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install codebase-visualizer@claude-communityCommands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: diagram-gen · What it can do: codebase-visualizer · Compare two other plugins
Data comes from public marketplace files in GitHub repositories of their authors. Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.