Masked Reveal

What it does

When your agent uses it

• Editorial text should reveal word-by-word through an overflow mask as they enter the viewport
• Tasks that involve Web animation and motion

Example prompts

• “/masked-reveal”

What it can do on your machine

Read from SKILL.md and the folder at commit 66624fb. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  No scripts in the folder and no shell commands in SKILL.md (its code samples are javascript, html and css).

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Masked Reveal loads about 990 tokens when it runs. Until then it costs about 57 tokens; SKILL.md has 202 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~57

When it runs · the whole SKILL.md, loaded when a task matches

~990

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from nirholas/three.ws at commit 66624fb, republished under its Apache-2.0 licence (© nirholas). 202 words, ~990 tokens.

name

masked-reveal

description

Create masked staggered word reveals on scroll with GSAP ScrollTrigger. Use when headings, hero copy, section titles, or editorial text should reveal word-by-word through an overflow mask as they enter the viewport.

<h1 class="masked-reveal" data-masked-reveal>
  Design systems that feel alive from the first scroll.
</h1>

.masked-reveal {
  visibility: visible;
}

html.js .masked-reveal[data-masked-reveal] {
  visibility: hidden;
}

html.js .masked-reveal.is-split {
  visibility: visible;
}

.masked-reveal .word-mask {
  display: inline-block;
  overflow: hidden;
  vertical-align: top;
}

.masked-reveal .word {
  display: inline-block;
  transform: translateY(110%);
  will-change: transform;
}

@media (prefers-reduced-motion: reduce) {
  html.js .masked-reveal[data-masked-reveal] {
    visibility: visible;
  }

  .masked-reveal .word {
    transform: none;
  }
}

document.documentElement.classList.add("js");
gsap.registerPlugin(ScrollTrigger);

function escapeHTML(value) {
  return value
    .replace(/&/g, "&")
    .replace(/</g, "&lt;")
    .replace(/>/g, "&gt;")
    .replace(/"/g, "&quot;")
    .replace(/'/g, "&#039;");
}

function splitMaskedReveal(element) {
  if (element.dataset.maskedRevealReady === "true") return;

  const text = element.textContent.trim();
  element.setAttribute("aria-label", text);
  element.innerHTML = text
    .split(/(\s+)/)
    .map((part) => {
      if (!part.trim()) return part;
      return `<span class="word-mask" aria-hidden="true"><span class="word">${escapeHTML(part)}</span></span>`;
    })
    .join("");
  element.dataset.maskedRevealReady = "true";
  element.classList.add("is-split");
}

function initMaskedReveals(selector = "[data-masked-reveal]") {
  if (window.matchMedia("(prefers-reduced-motion: reduce)").matches) return;

  document.querySelectorAll(selector).forEach((element) => {
    splitMaskedReveal(element);
    const words = element.querySelectorAll(".word");

    gsap.set(element, { autoAlpha: 1 });
    gsap.fromTo(
      words,
      { yPercent: 110 },
      {
        yPercent: 0,
        duration: 0.8,
        ease: "power3.out",
        stagger: 0.035,
        scrollTrigger: {
          trigger: element,
          start: "top 82%",
          once: true,
        },
      }
    );
  });
}

initMaskedReveals();

useLayoutEffect(() => {
  const ctx = gsap.context(() => {
    initMaskedReveals("[data-masked-reveal]");
  }, rootRef);

  return () => ctx.revert();
}, []);

© nirholas, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 11 other files in third_party/designcode-agent-skills/agent-skills/web-design/masked-reveal of nirholas/three.ws.

• SKILL.md
• demo/PROMPT.md
• demo/assets/page-01-65695f80-23f9-46ee-8487-cbb6c93cc48b-3840w.webp
• demo/assets/page-02-724142aa-44a6-48d3-9cf3-761e00d05b78-1600w.jpg
• demo/assets/page-03-4734259a-bad7-422f-981e-ce01e79184f2-1600w.jpg
• demo/assets/page-04-005600e5-f6ab-4e59-bc86-eaeb02797dfa-1600w.jpg
• demo/assets/page-05-e534354d-c5f2-4399-a1d9-2f50338e8c47-1600w.jpg
• demo/assets/page-06-fb6415fd-bf4d-4ccf-8e9d-7ab445e99207-1600w.jpg
• demo/assets/source-preview.jpg
• demo/index.html
• demo/preview.jpg
• demo/source.json

Open the folder on GitHubat commit 66624fb

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in nirholas/three.ws, which our catalogue first saw on October 7, 2026.

• MengTo/Skillsagent-skills/web-design/masked-reveal