html-video is a local tool that turns HTML, CSS, and data into animated MP4 videos using configurable rendering engines and templates. Coding agents use it to create and export videos on a user's machine, with optional AI-generated soundtracks. The catalogue skills operate the tool and its video-generation workflow.
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 nexu-io/html-video --skill vfx-text-cursorgit clone --depth 1 https://github.com/nexu-io/html-videoWrote 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/nexu-io/html-video/vfx-text-cursor)<a href="https://agentmods.dev/skills/nexu-io/html-video/vfx-text-cursor"><img src="https://agentmods.dev/badge/skills/nexu-io/html-video/vfx-text-cursor.svg" alt="Measured on agentmods" 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 | $0.00028 | $0.01166 |
| Opus 5 | $0.00014 | $0.00583 |
| Sonnet 5 | $0.00006 | $0.00233 |
| Haiku 4.5 | $0.00003 | $0.00117 |
Grade A, and why
vfx-text-cursor 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.
This is a copy
100% identical to vfx-text-cursor — 0 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.
What it actually says
【模板: VFX 文字光标 (Text Cursor)】 【意图】视频开场/Hero 帧 —— 光标在画布上"打字", 文字逐字浮现, 后面拖着彩色像散尾迹 + 定向光斑。Inspired by hyperframes vfx-text-cursor。
【画布】1920×1080, 背景 #06070a 暗哑黑 或 #0a0d12 (有暖偏蓝); 加微妙 vignette。
【内容】
- 一句金句 (中英不限), 居中, 字号 6-8vw, weight 700, 字体
Inter Tight/Source Sans 3/Noto Sans SC。 - 逐字揭示, 每个字符 80ms 间隔; 当前字符后面跟着一个 cursor
▍(或细 vertical bar)。 - 已揭示文字默认白色
#f5f5f7, opacity 1; 即将揭示位置加 chromatic ghost: 一份text-shadow: 2px 0 #ff3b6f, -2px 0 #00d4ff在 reveal 瞬间, 200ms 内收敛回正常。 - 光标本身: 16px 宽矩形, 颜色 = accent (取 1: hot pink
#ff3b6f/ cyan#00d4ff/ amber#ffb547), 闪烁@keyframes1.0s 周期; 后面拖一条 60-120px 的 motion blur trail (径向渐变到透明)。
【光斑 / 射线】
- 在打字位置附近随机生成 3-5 道定向光斑 (light leak): 用
linear-gradient(45deg, transparent, accent20, transparent)的细长矩形 +mix-blend-mode: screen, 不规则角度。 - 当文字打完, 整段文字加 0.5s shimmer sweep (光带横扫)。
【字段】
- 顶部 caption (uppercase letterspace 0.18em, 11px, opacity 0.5): "FRAME 01 · OPENING"。
- 文字底下副标 (24-28px, opacity 0.6): 来源 / 章节。
- 右下角 timecode (
00:03:21mono)。
【设计细节】
- 绝不: 多色彩虹 chromatic (只用 1 个 hot pink + cyan 这种二元像散, 不要 R/G/B 全色)。
- 字体: 西文
Inter TightBold; 中文Noto Sans SCBold; 严禁衬线。 - 动效用
@keyframes+ JS 计时器 (setTimeout逐字), 可被prefers-reduced-motion关闭 (直接显示所有字)。 - 必须用用户提供的金句; 不要捏造。
- 单文件 HTML, 不要外链字体以外的资源。
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.
- 8d ago First seen · 65 lines · 28 tokens per session scan A 62ff80a083bf
vfx-text-cursor is a skill published in the GitHub repository nexu-io/html-video (4,547 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 28 tokens to every session and 1,166 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to vfx-text-cursor, differing in 0 lines, and is treated as a copy.
Other skills, from other repositories
vfx-text-cursor
Cursor light trail, chromatic rays, and directional flares for word-by-word quote reveals in video intros.
vfx-text-cursor
Cursor light trail, chromatic rays, and directional flares for word-by-word quote reveals in video intros.
vfx-text-cursor
A video or hero-frame effect where a cursor reveals a sentence character by character with coloured trails, light streaks, and a final shimmer.
vfx-text-cursor
Cursor light trail, chromatic rays, and directional flares for word-by-word quote reveals in video intros.
frame-glitch-title
Digital glitch, chromatic offset, and data-corruption title frame for video transitions or cyberpunk heroes.
frame-glitch-title
A design template for a glitch-style title frame in Chinese, intended for a video transition, hero image, or cyberpunk graphic. It describes dark backgrounds, distorted lettering, colored offsets, scan lines, noise, and timecode details.