Hallmark

Anti-AI-slop design skill: real themes, real photos and a browser lint for machine-made tells

About

Gives your coding agent design taste for landing pages and sites. It builds the page around what the visitor came to do, lays it out in one of 48 material themes (or a custom direction), then lints the result in a real browser against tells that read as AI-made: eyebrows above every heading, tracked-capital labels, one coloured word in a headline, fake forms, a newsletter box at the end of every page. A fresh-context reviewer gets the last word. Also does /hallmark redesign and /hallmark audit on existing pages.

Install

Works with Claude Code, Codex, OpenCode, Cursor, Copilot

Access

High

What this skill's own files let it touch on your machine and accounts. Access isn't a verdict: check the publisher and the security audits too.

Bundles scripts
Runs shell commands
Writes files in your project
Uses the network
No credentials needed

Instructions plus Node scripts: sloplint.mjs (static and rendered page checks), an installer that validates themes, and an optional Claude Code edit-time hook. Rendered checks and screenshots launch a local headless Chrome via puppeteer-core. It can capture screenshots from a URL or dev server you point it at and uses openly licensed Wikimedia Commons photos listed in photos.json. No credentials needed.

Reviewed from source on Oct 24, 2026. Read the files yourself before installing.