theisegoria

ChatGPT Skill Plugins — Development skill for Claude Code

Development community

Artifact-only ChatGPT skills/plugins for Mermaid diagrams, portable Modelica projects, and portable mind maps.

How to install ChatGPT Skill Plugins

This entry records only its repository, not the path inside it, so there is no exact command to give. Open theisegoria/chatgpt-skill-plugins and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What ChatGPT Skill Plugins does

Artifact-only ChatGPT skills/plugins for Mermaid diagrams, portable Modelica projects, and portable mind maps.

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README

ChatGPT skill plugins

Artifact-only releases of 3 skills-only app plugins for ChatGPT and Codex, with matching standalone skill ZIPs:

Mermaid Diagrams — Author, edit, preview, repair, validate, and optionally render portable Mermaid documents.
Modelica Projects — Create, edit, preview, import, repair, and statically validate portable Modelica projects.
Portable Mind Maps — Author, convert, safely merge, preview, repair, and validate portable mind maps.

The development repository, tests, and Git history are intentionally not published here. Installable runtime files are distributed as ZIP assets on the [latest release](https://github.com/theisegoria/chatgpt-skill-plugins/releases/latest).

Install version 2.1.0

Download and extract `chatgpt-skill-plugins-2.1.0.zip` from the release.

Add the extracted directory as a local marketplace:

codex plugin marketplace add /absolute/path/to/chatgpt-skill-plugins-2.1.0

Install one or more plugins:

codex plugin add mermaid-diagrams@ben-chatgpt-apps
codex plugin add modelica-projects@ben-chatgpt-apps
codex plugin add portable-mindmaps@ben-chatgpt-apps

Restart the ChatGPT desktop app and begin a new task.

Standalone skill ZIPs may instead be extracted so that their top-level skill folder lives under the user's Codex skills directory. Plugin and standalone distributions contain the same audited runtime skill files.

Integrity and validation

Release assets include `SHA256SUMS.txt` and `release-manifest.json`. The archives are deterministic, path-safe, CRC-checked, schema-validated, and checked again after extraction. Static validation does not prove rendering, import, compilation, simulation, numerical correctness, or physical validity.

Policies and support

See `PRIVACY.md`, `TERMS.md`, and `SUPPORT.md` in this repository. The plugins have no developer-operated server or telemetry; external desktop applications retain their own terms.