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leonardomso/33-js-concepts/.claude/skills/resource-curator/SKILL.md

resource-curator

Find, evaluate, and maintain high-quality external resources for JavaScript concept documentation, including auditing for broken and outdated links

Source repository stars
66,510
Declared platforms
0
Static risk flags
1
Last source update
2026-08-02
Source checked
2026-08-04

Decision brief

What it does—and where it fits

Use this skill to find, evaluate, add, and maintain high-quality external resources (articles, videos, courses) for concept documentation pages. This includes auditing existing resources for broken links and outdated content.

Best for

  • Adding resources to a new concept page
  • Refreshing resources on existing pages
  • Auditing for broken or outdated links

Not for

  • Tasks that require unconfirmed production actions or broad system permissions.
  • Environments where the pinned source and install steps cannot be inspected.

Compatibility matrix

Platform support, with evidence labels

PlatformStatusEvidenceWhat to check
CodexNot declaredNo explicit evidencePortability before use
Claude CodeNot declaredNo explicit evidencePortability before use
CursorNot declaredNo explicit evidencePortability before use
Gemini CLINot declaredNo explicit evidencePortability before use
Open the compatibility checker

Installation

Inspect first. Install second.

The source command is displayed only when detected. A safe inspection prompt is always available so your agent can explain every action before execution.

Source-detected install commandSource
npx skills add https://github.com/leonardomso/33-js-concepts --skill ".claude/skills/resource-curator"
Safe inspection promptEditorial

Inspect the Agent Skill "resource-curator" from https://github.com/leonardomso/33-js-concepts/blob/16d0d95c02b19df6a8c841f1a0012d7b7367a340/.claude/skills/resource-curator/SKILL.md at commit 16d0d95c02b19df6a8c841f1a0012d7b7367a340. List every install step, command, network request, credential, file read/write, external action, and rollback step. Explain whether it fits my task. Do not install or execute anything until I approve.

Workflow

What the source asks the agent to do

  1. 01

    Phase 1: Audit Existing Resources

    Before adding new resources, audit what's already there:

    Check link accessibility — Does each link return 200?Verify content accuracy — Is the content still correct?Check publication dates — Is it too old for the topic?
  2. 02

    Phase 2: Identify Resource Gaps

    Compare current resources against targets:

    Are there enough resources for beginners AND advanced learners?Is there visual content (diagrams, animations)?Are official references (MDN) included?
  3. 03

    Phase 3: Find New Resources

    Search trusted sources using targeted queries:

    Search trusted sources using targeted queries:
  4. 04

    Phase 4: Write Descriptions

    Every resource needs a specific, valuable description:

    Every resource needs a specific, valuable description:
  5. 05

    Phase 5: Format and Organize

    Use correct Card syntax with proper icons

    Use correct Card syntax with proper iconsOrder resources logically (foundational first, advanced later)Ensure consistent formatting

Permission review

Static risk signals and limitations

Network access

medium · line 193

The documentation includes network, browsing, or remote request actions.

| **Fetch API** | 2017+ | Widespread support |

Network access

medium · line 211

The documentation includes network, browsing, or remote request actions.

<Card title="JavaScript Visualized: Promises & Async/Await — Lydia Hallie" icon="newspaper" href="https://dev.to/lydiahallie/javascript-visualized-promises-async-await-5gke">

Evidence record

Why each signal appears

EvidenceSourceComputedTestedEditorial
SignalValueEvidence typeMeaning
Quality score85/100ComputedDocumentation, specificity, maintenance, and trust rules
Repository stars66,510SourceRepository attention, not individual Skill quality
Compatibility0 platformsSourceDeclared in the catalog source record
Usage guideautomated source guideEditorialGenerated or reviewed according to the visible evidence level

Pinned source

Provenance and original SKILL.md

Repository
leonardomso/33-js-concepts
Skill path
.claude/skills/resource-curator/SKILL.md
Commit
16d0d95c02b19df6a8c841f1a0012d7b7367a340
License
MIT
Collected
2026-08-04
Default branch
master
View the original SKILL.md

Skill: Resource Curator for Concept Pages

Use this skill to find, evaluate, add, and maintain high-quality external resources (articles, videos, courses) for concept documentation pages. This includes auditing existing resources for broken links and outdated content.

When to Use

  • Adding resources to a new concept page
  • Refreshing resources on existing pages
  • Auditing for broken or outdated links
  • Reviewing community-contributed resources
  • Periodic link maintenance

Resource Curation Methodology

Follow these five phases for comprehensive resource curation.

Phase 1: Audit Existing Resources

Before adding new resources, audit what's already there:

  1. Check link accessibility — Does each link return 200?
  2. Verify content accuracy — Is the content still correct?
  3. Check publication dates — Is it too old for the topic?
  4. Identify outdated content — Does it use old syntax/patterns?
  5. Review descriptions — Are they specific or generic?

Phase 2: Identify Resource Gaps

Compare current resources against targets:

SectionTarget CountIcon
Reference2-4 MDN linksbook
Articles4-6 articlesnewspaper
Videos3-4 videosvideo
Courses1-3 (optional)graduation-cap
Books1-2 (optional)book

Ask:

  • Are there enough resources for beginners AND advanced learners?
  • Is there visual content (diagrams, animations)?
  • Are official references (MDN) included?
  • Is there diversity in teaching styles?

Phase 3: Find New Resources

Search trusted sources using targeted queries:

For Articles:

[concept] javascript tutorial site:javascript.info
[concept] javascript explained site:freecodecamp.org
[concept] javascript site:dev.to
[concept] javascript deep dive site:2ality.com
[concept] javascript guide site:css-tricks.com

For Videos:

YouTube: [concept] javascript explained
YouTube: [concept] javascript tutorial
YouTube: jsconf [concept]
YouTube: [concept] javascript fireship
YouTube: [concept] javascript web dev simplified

For MDN:

[concept] site:developer.mozilla.org
[API name] MDN

Phase 4: Write Descriptions

Every resource needs a specific, valuable description:

Formula:

Sentence 1: What makes this resource unique OR what it specifically covers
Sentence 2: Why reader should click (what they'll gain, who it's best for)

Phase 5: Format and Organize

  • Use correct Card syntax with proper icons
  • Order resources logically (foundational first, advanced later)
  • Ensure consistent formatting

Trusted Sources

Reference Sources (Priority Order)

PrioritySourceURLBest For
1MDN Web Docsdeveloper.mozilla.orgAPI docs, guides, compatibility
2ECMAScript Spectc39.es/ecma262Authoritative behavior
3Node.js Docsnodejs.org/docsNode-specific APIs
4Web.devweb.devPerformance, best practices
5Can I Usecaniuse.comBrowser compatibility

Article Sources (Priority Order)

PrioritySourceWhy Trusted
1javascript.infoComprehensive, exercises, well-maintained
2MDN GuidesOfficial, accurate, regularly updated
3freeCodeCampBeginner-friendly, practical
42ality (Dr. Axel)Deep technical dives, spec-focused
5CSS-TricksDOM, visual topics, well-written
6dev.to (Lydia Hallie)Visual explanations, animations
7LogRocket BlogPractical tutorials, real-world
8Smashing MagazineIn-depth, well-researched
9Digital OceanClear tutorials, examples
10Kent C. DoddsTesting, React, best practices

Video Creators (Priority Order)

PriorityCreatorStyleBest For
1FireshipFast, modern, entertainingQuick overviews, modern JS
2Web Dev SimplifiedClear, beginner-friendlyBeginners, fundamentals
3Fun Fun FunctionDeep-dives, personalityUnderstanding "why"
4Traversy MediaComprehensive crash coursesFull topic coverage
5JSConf/dotJSExpert conference talksAdvanced, in-depth
6AcademindThorough explanationsComplete understanding
7The Coding TrainCreative, visualVisual learners
8Wes BosPractical, real-worldApplied learning
9The Net NinjaStep-by-step tutorialsFollowing along
10Programming with MoshProfessional, clearCareer-focused

Course Sources

SourceTypeNotes
javascript.infoFreeComprehensive, exercises
PiccalilliFreeWell-written, modern
freeCodeCampFreeProject-based
Frontend MastersPaidExpert instructors
Egghead.ioPaidShort, focused lessons
Udemy (top-rated)PaidCheck reviews carefully
CodecademyFreemiumInteractive

Quality Criteria

Must Have (Required)

  • Link works — Returns 200 (not 404, 301, 5xx)
  • JavaScript-focused — Not primarily about C#, Python, Java, etc.
  • Technically accurate — No factual errors or anti-patterns
  • Accessible — Free or has meaningful free preview

Should Have (Preferred)

  • Recent enough — See publication date guidelines below
  • Reputable source — From trusted sources list or well-known creator
  • Unique perspective — Not duplicate of existing resources
  • Appropriate depth — Matches concept complexity
  • Good engagement — Positive comments, high views (for videos)

Red Flags (Reject)

Red FlagWhy It Matters
Uses var everywhereOutdated for ES6+ topics
Teaches anti-patternsHarmful to learners
Primarily other languagesWrong focus
Hard paywall (no preview)Inaccessible
Pre-2015 for modern topicsLikely outdated
Low quality commentsOften indicates issues
Factual errorsSpreads misinformation
Clickbait title, thin contentWastes reader time

Publication Date Guidelines

Topic CategoryMinimum YearReasoning
ES6+ Features2015+ES6 released June 2015
Promises2015+Native Promises in ES6
async/await2017+ES2017 feature
ES Modules2018+Stable browser support
Optional chaining (?.)2020+ES2020 feature
Nullish coalescing (??)2020+ES2020 feature
Top-level await2022+ES2022 feature
Fundamentals (closures, scope, this)AnyCore concepts don't change
DOM manipulation2018+Modern APIs preferred
Fetch API2017+Widespread support

Rule of thumb: For time-sensitive topics, prefer content from the last 3-5 years. For fundamentals, older classic content is often excellent.


Description Writing Guide

The Formula

Sentence 1: What makes this resource unique OR what it specifically covers
Sentence 2: Why reader should click (what they'll gain, who it's best for)

Good Examples

<Card title="JavaScript Visualized: Promises & Async/Await — Lydia Hallie" icon="newspaper" href="https://dev.to/lydiahallie/javascript-visualized-promises-async-await-5gke">
  Animated GIFs showing the call stack, microtask queue, and event loop in action. 
  The visuals make Promise execution order finally click for visual learners.
</Card>

<Card title="What the heck is the event loop anyway? — Philip Roberts" icon="video" href="https://www.youtube.com/watch?v=8aGhZQkoFbQ">
  The legendary JSConf talk that made the event loop click for millions of developers. 
  Philip Roberts' live visualizations are the gold standard — a must-watch.
</Card>

<Card title="You Don't Know JS: Scope & Closures — Kyle Simpson" icon="book" href="https://github.com/getify/You-Dont-Know-JS/blob/2nd-ed/scope-closures/README.md">
  Kyle Simpson's deep dive into JavaScript's scope mechanics and closure behavior. 
  Goes beyond the basics into edge cases and mental models for truly understanding scope.
</Card>

<Card title="JavaScript Promises in 10 Minutes — Web Dev Simplified" icon="video" href="https://www.youtube.com/watch?v=DHvZLI7Db8E">
  Quick, clear explanation covering Promise creation, chaining, and error handling. 
  Perfect starting point if you're new to async JavaScript.
</Card>

<Card title="How to Escape Async/Await Hell — Aditya Agarwal" icon="newspaper" href="https://medium.com/free-code-camp/avoiding-the-async-await-hell-c77a0fb71c4c">
  The pizza-and-drinks ordering analogy makes parallel vs sequential execution crystal clear. 
  Essential reading once you know async/await basics but want to write faster code.
</Card>

Bad Examples (Avoid)

<!-- TOO GENERIC -->
<Card title="Promises Tutorial" icon="newspaper" href="...">
  A comprehensive guide to Promises in JavaScript.
</Card>

<!-- NO VALUE PROPOSITION -->
<Card title="Learn Closures" icon="video" href="...">
  This video explains closures in JavaScript.
</Card>

<!-- VAGUE, NO SPECIFICS -->
<Card title="JavaScript Guide" icon="newspaper" href="...">
  Everything you need to know about JavaScript.
</Card>

<!-- JUST RESTATING THE TITLE -->
<Card title="Understanding the Event Loop" icon="video" href="...">
  A video about understanding the event loop.
</Card>

Words and Phrases to Avoid

AvoidWhyUse Instead
"comprehensive guide to..."Vague, overusedSpecify what's covered
"learn all about..."GenericWhat specifically will they learn?
"everything you need to know..."HyperbolicBe specific
"great tutorial on..."Subjective fillerWhy is it great?
"explains X"Too basicHow does it explain? What's unique?
"in-depth look at..."VagueWhat depth? What aspect?

Words and Phrases That Work

Good PhraseExample
"step-by-step walkthrough""Step-by-step walkthrough of building a Promise from scratch"
"visual explanation""Visual explanation with animated diagrams"
"deep dive into""Deep dive into V8's optimization strategies"
"practical examples of""Practical examples of closures in React hooks"
"the go-to reference for""The go-to reference for array method signatures"
"finally makes X click""Finally makes prototype chains click"
"perfect for beginners""Perfect for beginners new to async code"
"covers X, Y, and Z""Covers creation, chaining, and error handling"

Link Audit Process

Step 1: Check Each Link

For each resource in the concept page:

  1. Click the link — Does it load?
  2. Note the HTTP status:
StatusMeaningAction
200OKKeep, continue to content check
301/302RedirectUpdate to final URL
404Not FoundRemove or find replacement
403ForbiddenCheck manually, may be geo-blocked
5xxServer ErrorRetry later, may be temporary

Step 2: Content Verification

For each accessible link:

  1. Skim the content — Is it still accurate?
  2. Check the date — When was it published/updated?
  3. Verify JavaScript focus — Is it primarily about JS?
  4. Look for red flags — Anti-patterns, errors, outdated syntax

Step 3: Description Review

For each resource:

  1. Read current description — Is it specific?
  2. Compare to actual content — Does it match?
  3. Check for generic phrases — "comprehensive guide", etc.
  4. Identify improvements — How can it be more specific?

Step 4: Gap Analysis

After auditing all resources:

  1. Count by section — Do we meet targets?
  2. Check diversity — Beginner AND advanced? Visual AND text?
  3. Identify missing types — No MDN? No videos?
  4. Note recommendations — What should we add?

Resource Section Templates

Reference Section

## Reference

<CardGroup cols={2}>
  <Card title="[Main Topic] — MDN" icon="book" href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/...">
    Official MDN documentation covering [specific aspects]. 
    The authoritative reference for [what it's best for].
  </Card>
  <Card title="[Related API/Concept] — MDN" icon="book" href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/...">
    [What this reference covers]. 
    Essential reading for understanding [specific aspect].
  </Card>
</CardGroup>

Articles Section

## Articles

<CardGroup cols={2}>
  <Card title="[Article Title]" icon="newspaper" href="...">
    [What makes it unique/what it covers]. 
    [Why read this one/who it's for].
  </Card>
  <Card title="[Article Title]" icon="newspaper" href="...">
    [Specific coverage]. 
    [Value proposition].
  </Card>
  <Card title="[Article Title]" icon="newspaper" href="...">
    [Unique angle]. 
    [Why it's worth reading].
  </Card>
  <Card title="[Article Title]" icon="newspaper" href="...">
    [What it covers]. 
    [Best for whom].
  </Card>
</CardGroup>

Videos Section

## Videos

<CardGroup cols={2}>
  <Card title="[Video Title] — [Creator]" icon="video" href="https://www.youtube.com/watch?v=...">
    [What it covers/unique approach]. 
    [Why watch/who it's for].
  </Card>
  <Card title="[Video Title] — [Creator]" icon="video" href="https://www.youtube.com/watch?v=...">
    [Specific focus]. 
    [What makes it stand out].
  </Card>
  <Card title="[Video Title] — [Creator]" icon="video" href="https://www.youtube.com/watch?v=...">
    [Coverage]. 
    [Value].
  </Card>
</CardGroup>

Books Section (Optional)

<Card title="[Book Title] — [Author]" icon="book" href="...">
  [What the book covers and its approach]. 
  [Who should read it and what they'll gain].
</Card>

Courses Section (Optional)

<CardGroup cols={2}>
  <Card title="[Course Title] — [Platform]" icon="graduation-cap" href="...">
    [What the course covers]. 
    [Format and who it's best for].
  </Card>
</CardGroup>

Resource Audit Report Template

Use this template to document audit findings.

# Resource Audit Report: [Concept Name]

**File:** `/docs/concepts/[slug].mdx`
**Date:** YYYY-MM-DD
**Auditor:** [Name/Claude]

---

## Summary

| Metric | Count |
|--------|-------|
| Total Resources | XX |
| Working Links (200) | XX |
| Broken Links (404) | XX |
| Redirects (301/302) | XX |
| Outdated Content | XX |
| Generic Descriptions | XX |

## Resource Count vs Targets

| Section | Current | Target | Status |
|---------|---------|--------|--------|
| Reference (MDN) | X | 2-4 | ✅/⚠️/❌ |
| Articles | X | 4-6 | ✅/⚠️/❌ |
| Videos | X | 3-4 | ✅/⚠️/❌ |
| Courses | X | 0-3 | ✅/⚠️/❌ |

---

## Broken Links (Remove or Replace)

| Resource | Line | URL | Status | Action |
|----------|------|-----|--------|--------|
| [Title] | XX | [URL] | 404 | Remove |
| [Title] | XX | [URL] | 404 | Replace with [alternative] |

---

## Redirects (Update URLs)

| Resource | Line | Old URL | New URL |
|----------|------|---------|---------|
| [Title] | XX | [old] | [new] |

---

## Outdated Resources (Consider Replacing)

| Resource | Line | Issue | Recommendation |
|----------|------|-------|----------------|
| [Title] | XX | Published 2014, uses var throughout | Replace with [modern alternative] |
| [Title] | XX | Pre-ES6, no mention of let/const | Find updated version or replace |

---

## Description Improvements Needed

| Resource | Line | Current | Suggested |
|----------|------|---------|-----------|
| [Title] | XX | "A guide to closures" | "[Specific description with value prop]" |
| [Title] | XX | "Learn about promises" | "[What makes it unique]. [Why read it]." |

---

## Missing Resources (Recommendations)

| Type | Gap | Suggested Resource | URL |
|------|-----|-------------------|-----|
| Reference | No main MDN link | [Topic] — MDN | [URL] |
| Article | No beginner guide | [Title] — javascript.info | [URL] |
| Video | No visual explanation | [Title] — [Creator] | [URL] |
| Article | No advanced deep-dive | [Title] — 2ality | [URL] |

---

## Non-JavaScript Resources (Remove)

| Resource | Line | Issue |
|----------|------|-------|
| [Title] | XX | Primarily about C#, not JavaScript |

---

## Action Items

### High Priority (Do First)
1. **Remove broken link:** [Title] (line XX)
2. **Add missing MDN reference:** [Topic]
3. **Replace outdated resource:** [Title] with [alternative]

### Medium Priority
1. **Update redirect URL:** [Title] (line XX)
2. **Improve description:** [Title] (line XX)
3. **Add beginner-friendly article**

### Low Priority
1. **Add additional video resource**
2. **Consider adding course section**

---

## Verification Checklist

After making changes:

- [ ] All broken links removed or replaced
- [ ] All redirect URLs updated
- [ ] Outdated resources replaced
- [ ] Generic descriptions rewritten
- [ ] Missing resource types added
- [ ] Resource counts meet targets
- [ ] All new links verified working
- [ ] All descriptions are specific and valuable

Quick Reference

Icon Reference

Content TypeIcon Value
MDN/Official docsbook
Articles/Blog postsnewspaper
Videosvideo
Coursesgraduation-cap
Booksbook
Related conceptsContext-appropriate

Character Guidelines

ElementGuideline
Card titleKeep concise, include creator for videos
Description sentence 1What it covers / what's unique
Description sentence 2Why read/watch / who it's for

Resource Ordering

Within each section, order resources:

  1. Most foundational/beginner-friendly first
  2. Official references before community content
  3. Most highly recommended prominently placed
  4. Advanced/niche content last

Quality Checklist

Link Verification

  • All links return 200 (not 404, 301)
  • No redirect chains
  • No hard paywalls without notice
  • All URLs are HTTPS where available

Content Quality

  • All resources are JavaScript-focused
  • No resources teaching anti-patterns
  • Publication dates appropriate for topic
  • Mix of beginner and advanced content
  • Visual and text resources included

Description Quality

  • All descriptions are specific (not generic)
  • Descriptions explain unique value
  • No "comprehensive guide to..." phrases
  • Each description is 2 sentences
  • Descriptions match actual content

Completeness

  • 2-4 MDN/official references
  • 4-6 quality articles
  • 3-4 quality videos
  • Resources ordered logically
  • Diversity in teaching styles

Summary

When curating resources for a concept page:

  1. Audit first — Check all existing links and content
  2. Identify gaps — Compare against targets (2-4 refs, 4-6 articles, 3-4 videos)
  3. Find quality resources — Search trusted sources
  4. Write specific descriptions — What's unique + why read/watch
  5. Format correctly — Proper Card syntax, icons, ordering
  6. Document changes — Use the audit report template

Remember: Resources should enhance learning, not pad the page. Every link should offer genuine value. Quality over quantity — a few excellent resources beat many mediocre ones.

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