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.
npx skills add notque/vexjoy-agent --skill frontendgit clone --depth 1 https://github.com/notque/vexjoy-agentWrote 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.
[](https://agentmods.dev/skills/notque/vexjoy-agent/frontend)<a href="https://agentmods.dev/skills/notque/vexjoy-agent/frontend"><img src="https://agentmods.dev/badge/skills/notque/vexjoy-agent/frontend/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.
<a href="https://agentmods.dev/skills/notque/vexjoy-agent/frontend"><img src="https://agentmods.dev/badge/skills/notque/vexjoy-agent/frontend.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00020 | $0.04910 |
| Opus 5.5 | $0.00008 | $0.01964 |
| Sonnet 5.5 | $0.00004 | $0.00982 |
| Haiku 4.5 | $0.00002 | $0.00491 |
Grade A, and why
frontend 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 4d 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.
How it starts
The opening of the file, as written. The whole thing — 332 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Frontend Skill
Four modes: Design (UX copy, design systems, critique, accessibility, handoff, research), Distinctive (surface check, then brand-led visual direction for landing and campaign pages), HTML-Artifact (self-contained HTML generation with 8 shapes), and Three.js (3D web apps in imperative, R3F, or WebGPU paradigms).
Load first for any UI work
Before DESIGN, DISTINCTIVE, HTML-ARTIFACT, or a THREEJS UI overlay (HUD, menu, panel), read skills/shared-patterns/ui-design-judgment.md. Take starting values from ui-design-recipes.md and before/after fixes from ui-design-examples.md in the same folder. The mode references below add depth. Where they conflict with the core doc, the core doc wins. Every default can be overridden; state the reason.
Mode Selection
Classify the request into one mode before loading references.
| Mode | Signals | What to Load |
|---|---|---|
| DESIGN | UX copy, design system, design critique, accessibility, WCAG, design handoff, user research | Design-refs per sub-mode table below |
| DISTINCTIVE | Frontend design, typography, visual identity, anti-cliche, text animation, card effects | references/distinctive-frontend-design-refs/ per step |
| HTML-ARTIFACT | HTML artifact, make HTML, as HTML, rich visualization, interactive document, pptx, deck | references/html-artifact-refs/ per shape |
| THREEJS | Three.js, 3D scene, WebGL, WebGPU, react three fiber, R3F, GLTF | references/threejs-builder-refs/ per paradigm |
DESIGN Mode
Design methodology: UX copy, design systems, critique, accessibility review,
developer handoff, user research synthesis. Always load
references/design-refs/llm-design-failure-modes.md alongside mode-specific
reference.
Sub-mode Detection
| Sub-mode | Signals | Load |
|---|---|---|
| UX-COPY | write copy, button text, error message, empty state, tooltip | references/design-refs/ux-copy.md |
| DESIGN-SYSTEM | design tokens, component library, audit components, theme | references/design-refs/design-systems.md |
| CRITIQUE | review design, critique mockup, design feedback, usability | references/design-refs/design-critique.md |
| ACCESSIBILITY | WCAG, accessibility audit, color contrast, keyboard nav, a11y | references/design-refs/accessibility-review.md |
| HANDOFF | developer handoff, spec sheet, implementation spec, responsive | references/design-refs/design-handoff.md |
| RESEARCH | synthesize research, interview analysis, usability findings | (inline below) |
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.
- agents/html-builder.md 5.8 KB
- assets/base-template.html 495 B
- references/design-refs/accessibility-review.md 13 KB
- references/design-refs/design-critique.md 10 KB
- references/design-refs/design-handoff.md 9.9 KB
- references/design-refs/design-systems.md 9.3 KB
- references/design-refs/llm-design-failure-modes.md 9.1 KB
- references/design-refs/ux-copy.md 9.5 KB
- references/distinctive-frontend-design-refs/animation-patterns.md 11 KB
- references/distinctive-frontend-design-refs/background-techniques.md 10 KB
- references/distinctive-frontend-design-refs/balatro-shader-breakdown.md 15 KB
- references/distinctive-frontend-design-refs/card-shader-patterns.md 11 KB
- references/distinctive-frontend-design-refs/color-inspirations.json 9.4 KB
- references/distinctive-frontend-design-refs/css-audit-patterns.md 4.7 KB
- references/distinctive-frontend-design-refs/font-catalog.json 9.7 KB
- references/distinctive-frontend-design-refs/game-ui-polish.md 6.3 KB
- references/distinctive-frontend-design-refs/honest-placeholders.md 3.2 KB
- references/distinctive-frontend-design-refs/implementation-examples.md 7.7 KB
- references/distinctive-frontend-design-refs/macrostructure-catalog.md 9.3 KB
- references/distinctive-frontend-design-refs/oklch-color-harmony.md 7.3 KB
- references/distinctive-frontend-design-refs/performance-budgets.md 11 KB
- references/distinctive-frontend-design-refs/phase-details.md 4.8 KB
- references/distinctive-frontend-design-refs/pptx-conversion.md 9.7 KB
- references/distinctive-frontend-design-refs/roll-text.md 7.2 KB
- references/distinctive-frontend-design-refs/shader-integration-react.md 17 KB
- references/distinctive-frontend-design-refs/slide-controller.md 9.4 KB
- references/distinctive-frontend-design-refs/text-animation-patterns.md 4.3 KB
- references/html-artifact-refs/design-system.md 10 KB
- references/html-artifact-refs/diagram-layering.md 3.9 KB
- references/html-artifact-refs/infographic-layouts.md 4.9 KB
- references/html-artifact-refs/pdf-export.md 6.0 KB
- references/html-artifact-refs/pptx-export.md 10 KB
- references/html-artifact-refs/shape-diagram-illustration.md 4.3 KB
- references/threejs-builder-refs/advanced-animation.md 12 KB
- references/threejs-builder-refs/advanced-topics.md 11 KB
- references/threejs-builder-refs/build-recipes.md 7.4 KB
- references/threejs-builder-refs/game-architecture.md 10 KB
- references/threejs-builder-refs/game-patterns.md 13 KB
- references/threejs-builder-refs/gltf-loading.md 8.6 KB
- references/threejs-builder-refs/performance-patterns.md 12 KB
- references/threejs-builder-refs/react-three-fiber.md 18 KB
- references/threejs-builder-refs/shader-patterns.md 15 KB
- references/threejs-builder-refs/visual-polish.md 16 KB
- references/threejs-builder-refs/webgpu.md 20 KB
- scripts-distinctive-frontend-design/css_slop_rules.py 15 KB runs code
- scripts-distinctive-frontend-design/tests/test_css_slop_rules.py 6.9 KB runs code
- scripts-distinctive-frontend-design/tests/test_validate_design_advisory.py 3.3 KB runs code
- scripts-distinctive-frontend-design/tests/test_validate_design_macro.py 4.3 KB runs code
- scripts-distinctive-frontend-design/validate_design.py 22 KB runs code
- scripts-html-artifact/assemble-template.py 7.5 KB runs code
- scripts-html-artifact/css_slop_rules.py 15 KB runs code
- scripts-html-artifact/detect-shape.py 7.0 KB runs code
- scripts-html-artifact/fill-template.py 5.5 KB runs code
- scripts-html-artifact/pptx-bridge/__init__.py 490 B runs code
- scripts-html-artifact/pptx-bridge/_pptx_engine.py 26 KB runs code
- scripts-html-artifact/pptx-bridge/extract_slides.py 14 KB runs code
- scripts-html-artifact/pptx-bridge/render_pptx.py 6.9 KB runs code
- scripts-html-artifact/pptx-bridge/run-unified.py 12 KB runs code
- scripts-html-artifact/render-github-issues.py 7.5 KB runs code
- scripts-html-artifact/tests/test_assemble_template.py 29 KB runs code
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.
- 4d ago Changed a77ebfbe3eaa
- 22d ago Changed dcb08b7c5c6f
- 23d ago Changed · +268 lines · -19 tokens per session dbe9341e839d
- 26d ago Changed · -259 lines · +19 tokens per session 76c72467213c
- 27d ago First seen · 323 lines · 20 tokens per session scan A b1eff3b51234
frontend is a skill published in the GitHub repository notque/vexjoy-agent (442 stars, last pushed today), licensed MIT. It adds 20 tokens to every session and 4,910 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-20.
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