Render
LeoYeAI/openclaw-master-skills
Deploy and operate apps on Render (Blueprint + one-click Dashboard deeplink, same flow as Codex render-deploy).
A skill your agent uses when reviewing templates, rendered HTML, or shared components related to Check for broken links.
MITAuto-check passed
Install Link Checker
$ npx skills add thedaviddias/Front-End-Checklist --skill link-checker -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install thedaviddias/Front-End-Checklist link-checker --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/link-checker .claude/skills/link-checker && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "link-checker" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/link-checker into .claude/skills/link-checker/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "link-checker", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/link-checkerType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add thedaviddias/Front-End-Checklist --skill link-checker -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install thedaviddias/Front-End-Checklist link-checker --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/link-checker .agents/skills/link-checker && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "link-checker" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/link-checker into .agents/skills/link-checker/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "link-checker", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add thedaviddias/Front-End-Checklist --skill link-checker -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install thedaviddias/Front-End-Checklist link-checker --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/link-checker .cursor/skills/link-checker && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "link-checker" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/link-checker into .cursor/skills/link-checker/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "link-checker", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/thedaviddias/Front-End-Checklist.git --path skills/link-checker--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add thedaviddias/Front-End-Checklist --skill link-checker -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install thedaviddias/Front-End-Checklist link-checker --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/link-checker .gemini/skills/link-checker && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "link-checker" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/link-checker into .gemini/skills/link-checker/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "link-checker", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install thedaviddias/Front-End-Checklist link-checkerInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add thedaviddias/Front-End-Checklist --skill link-checker -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/link-checker .github/skills/link-checker && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "link-checker" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/link-checker into .github/skills/link-checker/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "link-checker", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add thedaviddias/Front-End-Checklist --skill link-checker -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install thedaviddias/Front-End-Checklist link-checker --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/link-checker .opencode/skills/link-checker && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "link-checker" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/link-checker into .opencode/skills/link-checker/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "link-checker", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
link-checker- GitHub stars
- 74k
- Token cost
- ~408 tokens
- SKILL.md length
- 158 words
- Files
- 2 (incl. references)
- Skills in repo
- 390
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when reviewing templates, rendered HTML, or shared components related to Check for broken links.
- Reviewing templates
- SKILL.md covers Quick Reference, Check, Fix and Explain, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Shared components related to Check for broken links
What it does
Link Checker is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing templates, rendered HTML, or shared components related to Check for broken links. Validate the final browser-facing markup, not just the source framework abstraction.
Its SKILL.md is about 410 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/rule.md`).
The repository describes itself as: 🗂 The essential checklist for modern web development, for humans and AI agents. The licence is MIT.
When your agent uses it
- Reviewing templates
- Shared components related to Check for broken links
Example prompts
- “/link-checker”
What it can do on your machine
Read from SKILL.md and the folder at commit e8d14d0. 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.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
frontendchecklist.io
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
Link Checker loads about 408 tokens when it runs, and up to ~6.8k if it reads all its reference files. Until then it costs about 50 tokens; SKILL.md has 158 words of instructions outside code blocks.
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
Auto-check passed
The automated check found no risky patterns in SKILL.md.
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 thedaviddias/Front-End-Checklist at commit e8d14d0, republished under its MIT licence (© thedaviddias). 158 words, ~408 tokens.
Download SKILL.mdSave it as
.claude/skills/link-checker/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- link-checker
- description
- Use when reviewing templates, rendered HTML, or shared components related to Check for broken links. Validate the final browser-facing markup, not just the source framework abstraction.
- metadata.category
- html
- metadata.priority
- medium
- metadata.difficulty
- beginner
- metadata.estimatedTime
- 15
- metadata.source
- frontendchecklist.io
- metadata.url
- https://frontendchecklist.io/rules/html/link-checker
Check for broken links
Broken links frustrate users, hurt SEO rankings (Google penalizes 404s), and damage credibility—especially for documentation and e-commerce sites.
Quick Reference
- Use lychee, linkchecker, or broken-link-checker npm packages
- Check internal, external, anchor, and mailto links
- Integrate into CI/CD for automatic detection
- Set up regular monitoring for external link rot
Check
Verify that all internal and external links are working properly and don't return 404 errors or redirect to unintended destinations.
Fix
Use automated link checking tools to identify and fix broken links, update redirected URLs, and remove or replace dead links.
Explain
Explain why broken links hurt user experience, SEO rankings, and credibility, and how to implement ongoing link monitoring.
Code Review
Review templates, server-rendered HTML, and shared components that output markup related to Check for broken links. Flag exact elements, attributes, and routes where the rendered HTML violates the rule.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/html/link-checker
© thedaviddias, MIT. 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 1 other file (references) in skills/link-checker of thedaviddias/Front-End-Checklist.
- SKILL.md
- references/rule.md
Open the folder on GitHubat commit e8d14d0
Compare with similar skills
Link Checker next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Link Checker this skillthedaviddias/Front-End-Checklist | 74k | — | ~408 | Automated safety check: Pass | MIT | |
| RenderLeoYeAI/openclaw-master-skills | 2.2k | — | ~4.8k | Automated safety check: Pass | MIT | |
| Linksgridaco/grida | 2.7k | — | ~2.5k | Automated safety check: Pass | Apache-2.0 | |
| Link CheckerCommunity-Access/accessibility-agents | 423 | — | ~1.5k | Automated safety check: Pass | MIT | |
| SEO Aeo Internal Linkingsickn33/agentic-awesome-skills | 47k | 1 repos | ~2.3k | Automated safety check: Pass | MIT | |
| Comment Checkercode-yeongyu/oh-my-openagent | 70k | — | ~160 | Automated safety check: Pass | Custom licence |
Similar skills
Links
gridaco/grida
Write any link or URL so it resolves where it is rendered, not where it lives in the repo.
Link Checker
Community-Access/accessibility-agents
Find vague link text such as click here, read more or a bare URL.
SEO Aeo Internal Linking
sickn33/agentic-awesome-skills
Maps internal link opportunities between pages with relevant anchor text, placement instructions, orphan-page detection, and cannibalisation checks.
Comment Checker
code-yeongyu/oh-my-openagent
A skill your agent uses when Codex needs to understand or respond to automatic comment-checker feedback emitted after an edit-like PostToolUse hook.
Link
nateherkai/AIS-OS
A skill your agent uses when someone asks to link a project, file, folder, or important context into AGENTS.md or their AIOS routing, or says "link this into my AIOS" or "add this to my routing".
More from thedaviddias/Front-End-Checklist
All 390 skills in this repoContent Dates Audit
thedaviddias/Front-End-Checklist
Audits article and blog pages for visible publish dates, Article JSON-LD with datePublished and dateModified, and Open Graph time tags, then fixes what is missing.
FAQPage Schema Markup
thedaviddias/Front-End-Checklist
Adds, checks and fixes FAQPage JSON-LD on pages with visible question-and-answer sections so it matches what readers see and can qualify for rich results.
Favicon Audit and Setup
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Checks that a site's favicon is linked, reachable and large enough for Google search results, and sets up ICO, SVG and Apple touch icon files when they are missing.
Content Freshness Signals
thedaviddias/Front-End-Checklist
Audits article pages for freshness signals, covering the Last-Modified header, Article JSON-LD dateModified and a visible last-updated date, and fixes mismatches.
Geo Meta Tags Audit
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Audits and fixes geo.region, geo.placename and geo.position meta tags on regional pages, noting where they help (Bing) and where they do not (Google).
Improve a Front-End Checklist Rule
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Scores and rewrites a Front-End Checklist rule MDX file against a scored quality rubric, replacing generic stub prompts with specific, actionable ones.
Questions about Link Checker
What does Link Checker do?
A skill your agent uses when reviewing templates, rendered HTML, or shared components related to Check for broken links. Link Checker is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing templates, rendered HTML, or shared components related to Check for broken links.
When should I use Link Checker?
Link Checker fits situations like: reviewing templates; shared components related to Check for broken links.
How do I install Link Checker in Claude Code?
Run `npx skills add thedaviddias/Front-End-Checklist --skill link-checker -a claude-code`. Or copy the skill folder (skills/link-checker in thedaviddias/Front-End-Checklist) into .claude/skills/link-checker in your project. Claude Code loads it when a task matches its description.
How do I install Link Checker in Codex?
Run `npx skills add thedaviddias/Front-End-Checklist --skill link-checker -a codex`. Or copy the skill folder (skills/link-checker in thedaviddias/Front-End-Checklist) into .agents/skills/link-checker in your project. Codex loads it when a task matches its description.
Can I use Link Checker in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add thedaviddias/Front-End-Checklist --skill link-checker -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/link-checker, .gemini/skills/link-checker, .github/skills/link-checker and .opencode/skills/link-checker in your project.
What does Link Checker need to run?
SKILL.md names no scripts, command-line tools or credentials: Link Checker is instructions for the agent only.
Does Link Checker access the network?
SKILL.md names 1 domain. As links in the text: frontendchecklist.io. This is read from the text; nothing was executed.
Is Link Checker safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Link Checker use?
Link Checker is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Link Checker use?
About 408 tokens (SKILL.md is roughly 1.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 6.4k tokens, read only when the agent opens those files.
What are the alternatives to Link Checker?
Skills that share tags, products or a category with Link Checker: Render (LeoYeAI/openclaw-master-skills, 2.2k stars), Links (gridaco/grida, 2.7k stars), Link Checker (Community-Access/accessibility-agents, 423 stars) and SEO Aeo Internal Linking (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Link Checker?
thedaviddias (a GitHub user) maintains it in thedaviddias/Front-End-Checklist, which has 74,421 GitHub stars. The repository holds 390 skills in this directory. The repository was last updated on October 6, 2026.
Source: thedaviddias/Front-End-Checklist on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.