bassnova42/arch-diagram-skill is a skill for Claude Code and Codex that reads the structure of a repository or technical document and produces an animated architecture diagram. No latest release version is given, and the README introduces export features for the HTML, PNG, MP4, GIF and Mermaid formats together with a live trace log that shows the workflow.
The tool picks representations such as layers, processing flows or cyclic flows based on the structure of the input, then adds animation to produce the result. Its input is not only technical documents but repositories as well. The README also presents a procedure for opening the result in a headless browser to check whether elements overlap or text overflows. Installation commands and generate, check and export commands are provided; the implementation language is JavaScript and the license is MIT. So the core is not simply a drawing feature but a workflow that reads the structure, outputs it in multiple formats and then inspects the on-screen layout.
That said, the verifiable evidence is limited to the README's descriptions and commands and the repository layout. No separate test path could be confirmed in the repository tree, and nothing in the available information says whether the automatic on-screen check guarantees the structural correctness of the diagram. The layout check of the output is therefore confirmed, but there is insufficient ground to verify accuracy beyond that directly.