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 tranfu-labs/tranfu-skills --skill write-social-preview-headgit clone --depth 1 https://github.com/tranfu-labs/tranfu-skillsWrote 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/tranfu-labs/tranfu-skills/write-social-preview-head)<a href="https://agentmods.dev/skills/tranfu-labs/tranfu-skills/write-social-preview-head"><img src="https://agentmods.dev/badge/skills/tranfu-labs/tranfu-skills/write-social-preview-head/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/tranfu-labs/tranfu-skills/write-social-preview-head"><img src="https://agentmods.dev/badge/skills/tranfu-labs/tranfu-skills/write-social-preview-head.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 | $0.00204 | $0.01892 |
| Opus 5 | $0.00102 | $0.00946 |
| Sonnet 5 | $0.00041 | $0.00378 |
| Haiku 4.5 | $0.00020 | $0.00189 |
Grade A, and why
write-social-preview-head scanned grade A with 1 finding 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 9d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -L -I https://example.com/ How it starts
The opening of the file, as written. The whole thing — 135 lines — stays where its author put it; the contents beside it link to each section on GitHub.
编写社交分享 Head
核心规则
社交分享场景优先保证爬虫能在初始 HTML 的 <head> 里直接读到完整预览信息，不依赖客户端 JS 注入，不依赖浏览器容错，也不要把 favicon 当作唯一 icon 来源。
对 Lark/飞书这类 IM 预览，图像优先级按 og:image > twitter:image > body 首张大于 100x100 的图片 > 空处理。因此页面 head 必须把 OG/Twitter 主图写完整，并提供 icon/touch icon/manifest 的一致资源链路。
Head 编写清单
每个需要被分享的 HTML 页面都要显式写这些标签：
<title>Page Title</title>
<meta name="description" content="Short page description" />
<link rel="canonical" href="https://example.com/page/" />
<meta property="og:type" content="website" />
<meta property="og:site_name" content="Site Name" />
<meta property="og:locale" content="zh_CN" />
<meta property="og:url" content="https://example.com/page/" />
<meta property="og:title" content="Page Title" />
<meta property="og:description" content="Short page description" />
<meta property="og:image" content="https://example.com/og-image-1200x630-YYYYMMDD.png" />
<meta property="og:image:secure_url" content="https://example.com/og-image-1200x630-YYYYMMDD.png" />
<meta property="og:image:type" content="image/png" />
<meta property="og:image:width" content="1200" />
<meta property="og:image:height" content="630" />
<meta property="og:image:alt" content="Readable image alt text" />
<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:title" content="Page Title" />
<meta name="twitter:description" content="Short page description" />
<meta name="twitter:image" content="https://example.com/og-image-1200x630-YYYYMMDD.png" />
<link rel="image_src" href="https://example.com/og-image-1200x630-YYYYMMDD.png" />
<link rel="shortcut icon" href="/favicon-YYYYMMDD.ico" sizes="32x32" type="image/x-icon" />
<link rel="icon" type="image/png" sizes="32x32" href="https://example.com/favicon-32x32-YYYYMMDD.png" />
<link rel="icon" type="image/png" sizes="16x16" href="https://example.com/favicon-16x16-YYYYMMDD.png" />
<link rel="apple-touch-icon" sizes="180x180" href="https://example.com/apple-touch-icon-YYYYMMDD.png" />
<link rel="apple-touch-icon-precomposed" sizes="180x180" href="https://example.com/apple-touch-icon-YYYYMMDD.png" />
<link rel="manifest" href="https://example.com/manifest.json" />
What ships with it
5 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.
- 9d ago First seen · 135 lines · 204 tokens per session scan A ec2075cbdc45
write-social-preview-head is a skill published in the GitHub repository tranfu-labs/tranfu-skills (2 stars, last pushed 2d ago), licensed MIT. It adds 204 tokens to every session and 1,892 once invoked, about $0.0010 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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