Hallmark: Make AI-built web pages look less generic and template-like

What it does

Hallmark is a skill (a packaged set of instructions an AI coding assistant follows) made by Together AI. For each brief, it picks a page layout plan the creators call a macrostructure, applies one of twenty-one visual themes, and runs 57 checks against common AI design habits, which the creators call slop-test gates, before handing the page back. When no theme fits, it switches to a Custom mode that designs palette, type and layout from scratch.

How to use it

Input → action → output: describe the page you want to your assistant, for example a menu for a tea shop, and Hallmark guides it to produce a self-contained HTML and CSS page. Three extra verbs change the job: audit scores existing code and returns a punch list without editing, redesign keeps your copy and brand but rebuilds the structure, and study pulls the type pairing and colour anchor out of a design you admire.

Common use cases

• Ask for a landing page for a small honey farm and get a single HTML and CSS page with its own layout and theme.
• Run hallmark audit on an existing site's code and get a punch list of generic design patterns, with no files changed.
• Point hallmark study at a design you like and get its layout, type pairing and colour anchor, optionally as a design.md file.