Hallmark
#8 in KI-WebentwicklungUnknown · siet 19. Mai 2026 · 2× · tolest 29. Okt. 2026
39
Momentum
Hallmark is an open-source design skill for AI coding agents (Claude Code, Cursor, Codex, OpenCode) that applies a set of rules ("slop-test gates") to keep generated web UIs from looking typically AI-made. The project is built by Hassan El Mghari (Nutlope) and Together AI; the official product site is usehallmark.com and the source code is on GitHub at Nutlope/hallmark.
Momentum-Verloop
01.08.30.10.
Features
| Output Formats | Self-contained HTML + CSS, or in-place edits respecting existing tokens |
| Integrations | npx skills add nutlope/hallmark; Claude Code plugin; Cursor (.cursor/rules); Codex (~/.codex/skills) |
| License | MIT |
| Platform | Claude Code, Cursor, Codex, OpenCode (installed as a skill) |
| Price | Free (open source) |
| Release Date | May 19, 2026 (launch); v1.1 on June 3, 2026 |