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 JasonxzWen/harness-hub --skill web-artifacts-buildergit clone --depth 1 https://github.com/JasonxzWen/harness-hubWrote 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/jasonxzwen/harness-hub/web-artifacts-builder)<a href="https://agentmods.dev/skills/jasonxzwen/harness-hub/web-artifacts-builder"><img src="https://agentmods.dev/badge/skills/jasonxzwen/harness-hub/web-artifacts-builder/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/jasonxzwen/harness-hub/web-artifacts-builder"><img src="https://agentmods.dev/badge/skills/jasonxzwen/harness-hub/web-artifacts-builder.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 | $0.00043 | $0.00638 |
| Opus 5 | $0.00022 | $0.00319 |
| Sonnet 5 | $0.00009 | $0.00128 |
| Haiku 4.5 | $0.00004 | $0.00064 |
Grade A, and why
web-artifacts-builder 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 10d 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
4 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.
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.
- 10d ago First seen · 76 lines · 43 tokens per session scan A e462fff19c27
web-artifacts-builder is a skill published in the GitHub repository JasonxzWen/harness-hub (72 stars, last pushed 1mo ago), with no licence file. It adds 43 tokens to every session and 638 once invoked, about $0.0002 per session on Opus 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 2026-08-30.
Other skills, from other repositories
moai-design-tools
Design tool integration specialist covering Figma MCP, Pencil renderer, and Pencil-to-code export. Use when fetching design context from Figma, rendering Pencil designs, or exporting to React/Tailwind code.
landing-page-generator
Generates high-converting Next.js/React landing pages with Tailwind CSS. Uses PAS, AIDA, and BAB frameworks for optimized copy/components (Heroes, Features, Pricing). Focuses on Core Web Vitals/SEO.
fintech-frontend-engineer
Use when building React applications or components in a fintech context, implementing financial dashboards, transaction histories, payment flows, or data-heavy UIs, working with Tailwind CSS, optimising for SEO (meta tags, structured data, Core Web Vitals), improving page load performance, handling sensitive financial…
frontend-code-reviewer
Use when reviewing a frontend diff, pull request, or code snippet for correctness, React patterns, TypeScript strictness, accessibility violations, performance regressions, CSS architecture, and test quality. Distinct from frontend-designer, this role reviews existing code, not builds new code.
frontend-designer
Use when building UI components, designing layouts, writing CSS, working with React or other frontend frameworks, improving accessibility, optimizing web performance, or any task involving the visual and interactive layer of a web application.
rn-styling
Use when styling React Native + Expo components: choosing between StyleSheet/NativeWind/inline, wiring NativeWind v4 from DESIGN.md tokens, handling Flexbox in RN (column-by-default, not row), safe-area insets, dark mode, responsive design with useWindowDimensions, optimized images via expo-image, performant lists via…