link-checker SKILL.md skillA
link-checker from seaworld008/commonly-used-high-value-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add seaworld008/commonly-used-high-value-skills/link-checker@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- seaworld008/commonly-used-high-value-skills
- Path
openclaw-skills/link-checker/SKILL.md- Versions recorded
- 4
- Latest version
- v1.0.0, committed Jul 27, 2026
- First version recorded
- Mar 15, 2026
- Size
- 7,686 bytes
- Repository stars
- 74
- License
- MIT
Use when checking URL availability, dead links, redirect chains, suspicious domains, documentation link health, or link-risk evidence before publishing.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Link Checker 当任务包含外部链接清单、邮件/文档 URL 安全检查时使用。Link Checker 是一款全方位、多维度的链接健康度与安全性审计工具。它不仅能发现 404 等失效链接，还能深入探测重定向背后的潜在威胁（如钓鱼攻击、恶意软件下载），确保 Agent 与外部互联网交互时的绝对安全。 ## 安装 ```bash npx clawhub@latest install link-checker ``` ## 触发场景 - **对外发布前检查**：在发布新的文档（Docs）、博客文章（Blog）或落地页（Landing Page）前，确保其中引用的所有内外部链接均为有效且可达。 - **疑似钓鱼链接检测**：在处理邮件或 Slack 消息中的未知 URL 时，利用 Link Checker 进行“先行探测”。 - **SEO 优化与维护**：定期对现有网站进行全量扫描，修复会导致搜索引擎降权的“断链”。 - **审核运营素材**：在广告投放或邮件营销前，核对跳转链路是否正确，避免预算浪费。 - **代码库依赖核对**：检查 `package.json` 或 `README.md` 中引用的项目主页、许可协议链接是否依然有效。 ## 核心检查项 - **HTTP 状态码与超时**：识别 404 (Not Found), 403 (Forbidden), 500 (Server Error) 等基本可达性问题。 - **重定向路径分析 (Redirect Chain)**：追踪 301/302 跳数。如果跳转次数超过 5 次，标记为高风险或潜在的重定向循环。 - **协议安全性 (SSL/TLS)**：强制检查是否支持 HTTPS，是否存在证书过期或不安全的 TLS 版本。 - **域名信誉与可疑特征**：检测同形异义词攻击（Homograph Attack，如 `googIe.com` 使用大写 i 代替小写 l）、异常子域名（如 `login.paypal.com.secure-auth.xyz`）。 - **页面内容一致性**：检查最终跳转页面的标题（Title）是否与原始链接描述相符。 ## 结果建议 - **阻断 (Block)**：检测到确凿的恶意链接、病毒库匹配项或无法修复的证书错误。 - **人工复核 (Review)**：链接可达但域名信誉低，或重定向到了意外的第三方平台。 - **通过 (Pass)**：链接有效、安全且符合内容上下文。 - **输出修复方案**：若发现 301 永久重定向，自动生成替代的最新 URL。 ## 触发条件 / When to Use - **邮件/文档摘要任务**：当 Agent 准备从某个外部链接提取内容前。 …
Read the whole file at its exact version.
How to install
mdr add seaworld008/commonly-used-high-value-skills/link-checker@sha256:1ad3d11001bb0156The line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_iqinp3i2bonhjmd2)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Mar 15, 2026 and Jul 27, 2026, about one every 45 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-07-27 | 2bd5c24 | 7,686 B | A | view · diff |
| v1.0.0 | 2026-06-29 | eafe326 | 7,640 B | A | view · diff |
| v1.0.0 | 2026-03-27 | 0b34652 | 7,460 B | A | view · diff |
| git:20260315.6b52f6a | 2026-03-15 | 6b52f6a | 733 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (7686 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
seaworld008/commonly-used-high-value-skills · 74 stars · license MIT · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_iqinp3i2bonhjmd2 GET https://markdownregistry.com/api/v1/resolve?ref=seaworld008/commonly-used-high-value-skills/link-checker GET https://markdownregistry.com/api/v1/blob/1ad3d11001bb0156a26babb26fabc45671cfb3d5bbd4124aa241583f44513c7f
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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