Content Research Writer
weapp-tailwindcss/weapp-tailwindcss
Assists in writing high-quality content by conducting research, adding citations, improving hooks, iterating on outlines, and providing real-time feedback on each section.
A skill your agent uses when auditing content pages for citation quality, suggesting authoritative sources to link for factual claims, or reviewing whether a page's external link attributes…
Install External Links
$ npx skills add thedaviddias/Front-End-Checklist --skill external-links -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install thedaviddias/Front-End-Checklist external-links --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/external-links .claude/skills/external-links && 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 "external-links" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/external-links into .claude/skills/external-links/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "external-links", 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/external-linksType 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 external-links -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install thedaviddias/Front-End-Checklist external-links --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/external-links .agents/skills/external-links && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "external-links" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/external-links into .agents/skills/external-links/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "external-links", 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 external-links -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install thedaviddias/Front-End-Checklist external-links --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/external-links .cursor/skills/external-links && 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 "external-links" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/external-links into .cursor/skills/external-links/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "external-links", 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/external-links--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 external-links -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install thedaviddias/Front-End-Checklist external-links --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/external-links .gemini/skills/external-links && 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 "external-links" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/external-links into .gemini/skills/external-links/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "external-links", 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 external-linksInstalls 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 external-links -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/external-links .github/skills/external-links && 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 "external-links" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/external-links into .github/skills/external-links/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "external-links", 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 external-links -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 external-links --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/external-links .opencode/skills/external-links && 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 "external-links" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/external-links into .opencode/skills/external-links/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "external-links", 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
external-links- GitHub stars
- 74k
- Token cost
- ~773 tokens
- SKILL.md length
- 363 words
- Files
- 2 (incl. references)
- Skills in repo
- 390
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when auditing content pages for citation quality, suggesting authoritative sources to link for factual claims, or reviewing whether a page's external link attributes…
- Works in 5 steps: Identify factual claims in the content… → Find the authoritative source (study,… → Add rel="noopener noreferrer" to all… → …
- Auditing content pages for citation quality
- 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
What it does
External Links is an agent skill from thedaviddias/Front-End-Checklist. Use when auditing content pages for citation quality, suggesting authoritative sources to link for factual claims, or reviewing whether a page's external link attributes (nofollow, noopener) are correctly set.
Its SKILL.md is about 770 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`).
It sits in Research & Science, covering Citation management. 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
- Auditing content pages for citation quality
- Suggesting authoritative sources to link for factual claims
- Reviewing whether a pages external link attributes (nofollow
- Noopener) are correctly set
Example prompts
- “/external-links”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Identify factual claims in the content that cite statistics, research, or expert consensus without a source link.
- Find the authoritative source (study, official documentation, government data) and add an inline link.
- Add rel="noopener noreferrer" to all external links for security.
- Add rel="sponsored" to paid or affiliate links; rel="nofollow" to links you cannot vouch for.
- Avoid linking to competitor sites for their main commercial pages; prefer linking to neutral third parties.
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):
web.devfrontendchecklist.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
External Links loads about 773 tokens when it runs, and up to ~1.7k if it reads all its reference files. Until then it costs about 56 tokens; SKILL.md has 363 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). 363 words, ~773 tokens.
Download SKILL.mdSave it as
.claude/skills/external-links/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- external-links
- description
- Use when auditing content pages for citation quality, suggesting authoritative sources to link for factual claims, or reviewing whether a page's external link attributes (nofollow, noopener) are correctly set.
- metadata.category
- seo
- metadata.priority
- medium
- metadata.difficulty
- intermediate
- metadata.estimatedTime
- 10
- metadata.source
- frontendchecklist.io
- metadata.url
- https://frontendchecklist.io/rules/seo/external-links
Add relevant external links
Outbound links to authoritative sources strengthen the credibility of your content and are considered a positive trust signal by Google. Pages that cite their sources rank better for informational queries than those that make unsupported claims.
Quick Reference
- Link out to authoritative sources that support your claims — this demonstrates E-E-A-T and improves credibility
- External links to reputable sites do not hurt your SEO; Google treats them as a trust signal
- Use
rel="noopener noreferrer"on external links; addrel="nofollow"only for untrusted or paid links
Check
For each content page, count the number of external <a href> links pointing to domains other than the current site. Check: (1) Are factual claims backed by links to authoritative sources (government sites, peer-reviewed research, official documentation)? (2) Do all external links have rel="noopener noreferrer" for security? (3) Are paid or sponsored links marked with rel="sponsored" or rel="nofollow"?
Fix
- Identify factual claims in the content that cite statistics, research, or expert consensus without a source link.
- Find the authoritative source (study, official documentation, government data) and add an inline link.
- Add
rel="noopener noreferrer"to all external links for security. - Add
rel="sponsored"to paid or affiliate links;rel="nofollow"to links you cannot vouch for. - Avoid linking to competitor sites for their main commercial pages; prefer linking to neutral third parties.
Example: Replace "Studies show 60% of users abandon slow pages" with:
"According to
<a href="https://web.dev/performance/" rel="noopener noreferrer">Google's web.dev research</a>, 60% of users abandon pages that take over 3 seconds to load."
Show full SKILL.md (109 more words)Show less
Explain
Google uses the context of your outbound links as a signal of content quality. Pages that cite reputable external sources are treated as more trustworthy than those making unsupported assertions. Properly attributed external links also demonstrate E-E-A-T by showing you have researched the topic from primary sources.
Code Review
Parse all <a href> elements with external URLs (different domain than the site). Verify each external link has rel="noopener noreferrer". Flag paid/affiliate links missing rel="sponsored". Count external links per page — flag pages with zero external links in long-form content (>500 words) that contains factual claims.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/seo/external-links
© 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/external-links of thedaviddias/Front-End-Checklist.
- SKILL.md
- references/rule.md
Open the folder on GitHubat commit e8d14d0
Compare with similar skills
External Links 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 |
|---|---|---|---|---|---|---|
| External Links this skillthedaviddias/Front-End-Checklist | 74k | — | ~773 | Automated safety check: Pass | MIT | |
| Content Research Writerweapp-tailwindcss/weapp-tailwindcss | 1.9k | 25 repos | ~3.5k | Automated safety check: Pass | MIT | |
| Systematic Review ScreenerImbad0202/academic-research-skills | 51k | — | ~8.4k | Automated safety check: Pass | Custom licence | |
| NetworkxzLanqing/codex-claude-academic-skills | 4.7k | 15 repos | ~3.2k | Automated safety check: Pass | BSD-3-Clause | |
| Literature Reviewneflibata-feng/MyArxiv-Agent | 126 | 20 repos | ~5.9k | Automated safety check: Notes | MIT | |
| Openalex Databaseneflibata-feng/MyArxiv-Agent | 126 | 12 repos | ~3k | Automated safety check: Pass | Custom licence |
Similar skills
Systematic Review Screener
Imbad0202/academic-research-skills
Screens records for systematic, scoping and rapid reviews against fixed eligibility rules, using two blinded AI reviewers and a third adjudicator, with traceable PRISMA counts.
Networkx
zLanqing/codex-claude-academic-skills
Comprehensive toolkit for creating, analyzing, and visualizing complex networks and graphs in Python.
Literature Review
neflibata-feng/MyArxiv-Agent
Conduct comprehensive, systematic literature reviews using multiple academic databases (PubMed, arXiv, bioRxiv, Semantic Scholar, etc.).
Openalex Database
neflibata-feng/MyArxiv-Agent
Query and analyze scholarly literature using the OpenAlex database.
Citation Verification Guide
Galaxy-Dawn/claude-scholar
Reference guidance for checking every citation in academic writing against canonical sources such as DOI, arXiv, CrossRef and Semantic Scholar, to catch fake or wrong references.
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Related
Categories
Questions about External Links
What does External Links do?
A skill your agent uses when auditing content pages for citation quality, suggesting authoritative sources to link for factual claims, or reviewing whether a page's external link attributes…. External Links is an agent skill from thedaviddias/Front-End-Checklist. Use when auditing content pages for citation quality, suggesting authoritative sources to link for factual claims, or reviewing whether a page's external link attributes (nofollow, noopener) are correctly set.
When should I use External Links?
External Links fits situations like: auditing content pages for citation quality; suggesting authoritative sources to link for factual claims; reviewing whether a pages external link attributes (nofollow; noopener) are correctly set.
How do I install External Links in Claude Code?
Run `npx skills add thedaviddias/Front-End-Checklist --skill external-links -a claude-code`. Or copy the skill folder (skills/external-links in thedaviddias/Front-End-Checklist) into .claude/skills/external-links in your project. Claude Code loads it when a task matches its description.
How do I install External Links in Codex?
Run `npx skills add thedaviddias/Front-End-Checklist --skill external-links -a codex`. Or copy the skill folder (skills/external-links in thedaviddias/Front-End-Checklist) into .agents/skills/external-links in your project. Codex loads it when a task matches its description.
Can I use External Links 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 external-links -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/external-links, .gemini/skills/external-links, .github/skills/external-links and .opencode/skills/external-links in your project.
What does External Links need to run?
SKILL.md names no scripts, command-line tools or credentials: External Links is instructions for the agent only.
Does External Links access the network?
SKILL.md names 2 domains. As links in the text: web.dev and frontendchecklist.io. This is read from the text; nothing was executed.
Is External Links 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 External Links use?
External Links 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 External Links use?
About 773 tokens (SKILL.md is roughly 3.1k 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 946 tokens, read only when the agent opens those files.
What are the alternatives to External Links?
Skills that share tags, products or a category with External Links: Content Research Writer (weapp-tailwindcss/weapp-tailwindcss, 1.9k stars), Systematic Review Screener (Imbad0202/academic-research-skills, 51k stars), Networkx (zLanqing/codex-claude-academic-skills, 4.7k stars) and Literature Review (neflibata-feng/MyArxiv-Agent, 126 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains External Links?
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.