Nutlope/hallmark

npx skills add nutlope/hallmark -g

`-g` installs for every project; leave it off to install into the current one. Needs Node 18 or later. The browser checks (`sloplint --render`, screenshots) also need `npm i -g puppeteer-core` and Chrome; without them the static checks still run. | Harness | Lands in | Invoke | | --- | --- | --- | | Claude Code | `~/.claude/skills/hallmark` | `/hallmark ` or describe a new build | | Codex CLI | `~/.agents/skills/hallmark` | `$hallmark ` or describe a new build | | Cursor | finds the copies above | `/hallmark ` or describe a new build | | OpenCode | finds the copies above | `/hallmark ` or describe a new build | - **One harness only:** `npx skills add nutlope/hallmark -g --agent claude-code` (or `codex`, `opencode`, `cursor`, `github-copilot`). - **As a Claude Code plugin:** `/plugin marketplace add nutlope/hallmark`, then `/plugin install hallmark@hallmark` (invoked as `/hallmark:hallmark`). - **From a clone:** `node skills/hallmark/scripts/install.mjs` validates every theme and reference before it copies; `install-hook.mjs` adds an edit-time Floor check to Claude Code. - **Lint any page:** `node skills/hallmark/scripts/sloplint.mjs --render`. - **If it does not fire on its own,** name it: *use hallmark to build ...*.