An agent plugin of engineering skills, for any language and any project. It runs on Claude Code and on Codex.
It does not replace superpowers.
lanthorn adds skills that superpowers does not cover, and forks a superpowers
skill only when that skill must behave differently. Everything else routes back
to superpowers. skills/using-lanthorn holds the routing table.
| Skill | Use it when |
|---|---|
using-lanthorn |
Any task. It routes to the right skill. |
spec-writing |
Writing or editing a spec, protocol doc, or normative requirement. |
writing-commits |
Writing a commit message or a pull request description. |
A lanthorn is the old spelling of lantern, from the days when the panes were scraped horn rather than glass. You carry one to see the ground you are actually standing on. Every skill here works the same way: read the repository's own history, the project's own declaration, the actual spec, rather than applying a template from memory.
Claude Code:
/plugin marketplace add nau/lanthorn
/plugin install lanthorn@lanthorn
Codex: clone the repository and install it as a plugin. Codex reads
.codex-plugin/plugin.json and loads skills/ from it.
git clone https://github.com/nau/lanthorn
lanthorn expects superpowers to be installed alongside it. Most rows in the
routing table point there. Claude Code declares this in plugin.json and
installs it for you. On other hosts, install superpowers yourself.
| Host | Router loaded automatically |
|---|---|
| Claude Code | Yes. A SessionStart hook injects it. |
| Codex | No. Read skills/using-lanthorn/SKILL.md at the start of a task. |
git clone --recurse-submodules https://github.com/nau/lanthorn
cd lanthorn
claude --plugin-dir . # load it without installing
claude plugin validate . --strict
vendor/superpowers is a submodule holding the upstream text to diff a fork
against. Ordinary installs never fetch it.
CLAUDE.md holds the rules for changing this plugin.
MIT
