agentmods.dev

hallmark

hallmark is a skill for Claude Code, Codex from heyAyushh/stacc. It costs 61 tokens per session (15,290 once invoked), scanned A, a copy of hallmark, MIT.

A design guide for creating or reviewing web pages with more deliberate layouts and visual choices. It focuses on avoiding repetitive, generic page structures and adapting the design to the brief.

In plain words
What is it for?
Use it to design a new page, audit an existing page, redesign a target, or study a visual reference.
Why use it?
It gives coding agents concrete design criteria for spotting or reducing common AI-generated interface patterns.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 3repo 2mo ago A scan 61 tokens copy · 91% MIT

Good fit Use it to design a new page, audit an existing page, redesign a target, or study a visual reference.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/heyayushh/stacc/hallmark
View source ↗ heyAyushh/stacc stacc.fyi
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add heyAyushh/stacc --skill hallmark
Clone the repo
git clone --depth 1 https://github.com/heyAyushh/stacc

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for hallmark

README.md
[![agentmods](https://agentmods.dev/badge/skills/heyayushh/stacc/hallmark/github.svg)](https://agentmods.dev/skills/heyayushh/stacc/hallmark)
Your own site
<a href="https://agentmods.dev/skills/heyayushh/stacc/hallmark"><img src="https://agentmods.dev/badge/skills/heyayushh/stacc/hallmark/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for hallmark

Your own site · 80×15
<a href="https://agentmods.dev/skills/heyayushh/stacc/hallmark"><img src="https://agentmods.dev/badge/skills/heyayushh/stacc/hallmark.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 15,290 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 91% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00061 $0.15290
Opus 5 $0.00030 $0.07645
Sonnet 5 $0.00012 $0.03058
Haiku 4.5 $0.00006 $0.01529

Measured 8d ago against content hash 6e1d38e4d1ff, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

hallmark scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

91% identical to hallmark — 84 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

configs/skills/hallmark/SKILL.md · 555 lines

How it starts

The opening of the file, as written. The whole thing — 555 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Hallmark

A design skill for AI coding assistants. Makes the UIs they generate look made, not generated.

Hallmark is opinionated, short, and boring on purpose. It encodes a tight set of rules — drawn from the consensus of the anti-AI-slop design field (impeccable, kami, Anthropic's frontend-design skill, taste-skill, the Claude cookbook on frontend aesthetics, and the 2026 "tactile rebellion" movement) — and refuses to let the model fall back to the defaults every LLM was trained on.

The differentiator: Hallmark insists on structural variety, not just visual variety. Two pages by Hallmark for two different briefs should not share the same hero → 3-feature → CTA → footer rhythm. They should feel like different sites, not different colour-swaps of the same template. See references/structure.md.

Powered by Together AI.

How to use this skill

Hallmark has one default behaviour and three explicit verbs.

Invocation What it does
(default) The user asked you to design or build something new. Follow the Design flow below.
hallmark audit <target> Read the target, score it against the anti-pattern list, return a ranked punch list. Do not edit.
hallmark redesign <target> [--mood <name>] Take the target's content and intent, then redesign the visual structure inside the existing implementation boundaries unless the user explicitly confirms a full rebuild. New section rhythm, new heading placement, new component voice. Preserve existing routes, component ownership, copy intent, brand, and information architecture; replace only the visual/interaction layer needed for the requested scope.
hallmark study <screenshot | URL> The user pasted or attached an image of a design they admire, or pasted a URL to a live page. Extract the DNA — macrostructure, archetypes, type-pairing, colour anchor — and produce a diagnosis report, then optionally rebuild the user's content using the extracted DNA or emit a portable design.md of the DNA. Detection is automatic: a URL (http:// / https:// prefix) routes to URL mode; anything else routes to image mode. URL mode reads the page's HTML and CSS via WebFetch — it can name exact fonts and exact colour values, but can't judge rhythm. After the diagnosis, the user has three follow-ups: build with the DNA (handoff to default), lock the DNA into a portable design.md (opt-in via "lock the DNA" / "give me a design.md"), or stop at the diagnosis. Never copies pixels. Refuses template-marketplace URLs. Tighter refusal layer for design.md emission than for the diagnosis itself — URL-mode emission requires attestation that the source is the user's own or a public reference for their own brand. Falls back to asking for a screenshot if the URL is auth-walled, a JS-only SPA shell, or otherwise un-readable. Load references/study.md before this verb runs.

Read the full file on GitHub · 555 lines

Files

What ships with it

60 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 555 lines · 61 tokens per session scan A 6e1d38e4d1ff

Subscribe to this mod's changes

hallmark is a skill published in the GitHub repository heyAyushh/stacc (3 stars, last pushed 2mo ago), licensed MIT. It adds 61 tokens to every session and 15,290 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 91% identical to hallmark, differing in 84 lines, and is treated as a copy.

Design and UX
Related

Other skills, from other repositories

webgl-holographic-foil

A self-contained WebGL2 hero: thin-film interference over a crushed-foil surface whose palette shifts with the viewing angle; move the cursor to tilt the film.

nexu-io/open-design · 41 tokens

html-ppt-hermes-cyber-terminal

OpenDesign + BYOK: choosing and wiring your own model, hands-on — cost, quality, and the routing decision. Built as a decision-grade AI literacy deck for engineers, IT, applied-AI teams.

nexu-io/open-design · 53 tokens

html-ppt-taste-brutalist

16:9 HTML deck in tactical-telemetry / CRT-terminal taste. Deactivated-CRT charcoal slides, white-phosphor monospace, hazard-red accent, scanline overlay, ASCII syntax, density over decoration. Distilled from Leonxlnx/taste-skill brutalist-skill (Tactical Telemetry mode).

nexu-io/open-design · 78 tokens

visual-ralph

Visual Ralph orchestration for frontend UI from generated references, static references, or live URL targets, using $ultragoal with built-in visual verdict and pixel-diff evidence until the implementation matches and leaves a reproducible design system.

Yeachan-Heo/oh-my-codex · 52 tokens

accessibility

Consolidated accessibility skill entrypoint for WCAG 2.2, ARIA Authoring Practices, cognitive accessibility, Section 508, EN 301 549, design intent verification, and the Accessibility Planner workflow.

microsoft/hve-core · 47 tokens

make-resume

A Chinese-language tool for creating editable HTML resumes that can be changed in a browser and printed to PDF. It uses available resume templates when they are installed and otherwise provides a simpler fallback.

Hisn00w/ASu-skills · 86 tokens