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Lwc Public API Hardening

Category: Content  ·  Sub-category: content-misc  ·  Last updated:
lang:javascript
Use when an LWC exposes `@api` properties, `@api` methods, or design attributes in `<targetConfig>` and you need a defensive, predictable public contract. Covers runtime type coercion (the `@api` decorator does NOT enforce JS types — `recordId` is always a string even if you declared it Number), required-vs-optional `@api` validation in `connectedCallback`, getter/setter pairs for reactive normalisation, design-attribute typing in js-meta.xml (datasource picker, dataType, supported objects, default values, propertyType), kebab-case ↔ camelCase rules, and namespace prefix handling. NOT for component-to-component messaging design (see `component-communication`), NOT for App Builder exposure / surface targeting (see `lwc-app-builder-config`), NOT for Custom Property Editors for Flow (see `custom-property-editor-for-flow`).
Security AStatic scan found no risk patternsHow grading works ›

About this skill (catalog notes)

Lwc Public API Hardening includes 6 code blocks for direct copy-paste. At roughly 2,335 words the SKILL.md is on the longer end of the catalog distribution.

Original author
Pranav Nagrecha
Indexed lastmod
Catalog position
Content · content-misc
Indexed related skills
10

How Lwc Public API Hardening fits the catalog

Lwc Public API Hardening sits in the Content category under the content-misc sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

Activate this skill when an LWC ships @api properties, @api methods, or admin-facing design attributes in <targetConfig> and the public surface needs to be defensive, well-typed at runtime, and survivable against unexpected input from parents, App Builder admins, Flow runtime, or programmatic instantiation. The fundamental thing to internalise: @api is a binding decorator, not a type checker. Anything you declare ends up as whatever JavaScript value the host hands you — most commonly a string, even when you wrote @api recordId; and your IDE shows a string annotation.

What this skill does

Lwc Public API Hardening is a community-contributed Claude Code skill in the content-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/lwc-public-api-hardening/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when an LWC exposes `@api` properties, `@api` methods, or design attributes in `<targetConfig>` and you need a defensive, predictable public contract. Covers runtime type coercion (the `@api` decorator does NOT enforce JS types — `recordId` is always a string even if you declared it Number), required-vs-optional `@api` validation in `connectedCallback`, getter/setter pairs for reactive normalisation, design-attribute typing in js-meta.

Who uses this skill

The Lwc Public API Hardening Claude Code skill is built for content creators, marketers, copywriters, SEO professionals, and editorial teams. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 146,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/lwc-public-api-hardening
curl -L https://claudskills.com/skills/lwc-public-api-hardening/SKILL.md \
  -o ~/.claude/skills/lwc-public-api-hardening/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/lwc-public-api-hardening/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/lwc-public-api-hardening/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\lwc-public-api-hardening\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

Frequently asked questions

How do I install the Lwc Public API Hardening Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/lwc-public-api-hardening/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Lwc Public API Hardening skill do?
Use when an LWC exposes `@api` properties, `@api` methods, or design attributes in `<targetConfig>` and you need a defensive, predictable public contract. Covers runtime type coercion (the `@api` decorator does NOT enforce JS types — `recordId` is always a string even if you declared it Number), required-vs-optional `@api` validation in `connectedCallback`, getter/setter pairs for reactive normalisation, design-attribute typing in js-meta.xml (datasource picker, dataType, supported objects, default values, propertyType), kebab-case ↔ camelCase rules, and namespace prefix handling. NOT for component-to-component messaging design (see `component-communication`), NOT for App Builder exposure / surface targeting (see `lwc-app-builder-config`), NOT for Custom Property Editors for Flow (see `custom-property-editor-for-flow`).
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Lwc Public API Hardening skill?
Use Lwc Public API Hardening when your Claude Code task falls under the Content category — specifically in the content misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Lwc Public API Hardening" or describe the task and let Claude pick). Browse related skills at /category/content/.
What is a Claude Code skill and how does the Lwc Public API Hardening skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Lwc Public API Hardening is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Content category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
Pranav Nagrecha. (2026). Lwc Public API Hardening [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/lwc-public-api-hardening/
BibTeX
@misc{lwc-public-api-hardening-2026,
  author    = {Pranav Nagrecha},
  title     = {Lwc Public API Hardening [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/lwc-public-api-hardening/}
}

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Security scan

Grade A · scanned 2026-07-06 — free static scan against the OWASP Agentic Skills Top 10.

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