Hallmark
Design skill for Claude Code, Codex, Cursor and OpenCode that builds web pages from a set of fifty visual themes, then checks the result in a real browser for the usual signs of AI-made design. It can also redesign or just audit an existing page.
Test results
Run with our skill harness: the skill alone in a throwaway project, invoked by name, and the real output file checked. Skills are tested in Claude Code and Cursor only so far.
| Client | Result | Last passed | What we checked |
|---|---|---|---|
| Claude Code 2.1.296 (Claude Code) | Passed Tested 2026-10-28 | 2026-10-28 | hallmark: {'html with token': True, 'bakery named': True, ':root custom properties': True, 'no transition: all': True, '>=3 sections': True}; file=index.html |
| Cursor 2026.10.22-27dcf5f | Passed Tested 2026-10-28 | 2026-10-28 | hallmark: {'html with token': True, 'bakery named': True, ':root custom properties': True, 'no transition: all': True, '>=3 sections': True}; file=index.html |
Skill version: github.com/Nutlope/hallmark @ 8f6969f8 (2026-10-28).
Earlier runs:
- Cursor, 2026-10-28: failed (task (timeout); output_check)
Get it
The skill’s files and install instructions are in its repository: github.com/Nutlope/hallmark.