sf-lwc

sf-lwc is a skill for Claude Code, Codex from Jaganpro/sf-skills. It costs 84 tokens per session (1,496 once invoked), scanned A, original, MIT.

A development guide for Salesforce Lightning Web Components, or LWCs, which are reusable interface components built with HTML, JavaScript, and CSS. It covers their data connections, Salesforce styling, accessibility, performance, and tests.

In plain words
What is it for?
Use it to create or edit LWC bundles, connect them to LDS, Apex, or GraphQL, apply Salesforce styling, support Flow or other Salesforce surfaces, and write Jest tests.
Why use it?
It helps structure components correctly and address common concerns such as data loading, user access needs, speed, and automated testing.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to create or edit LWC bundles, connect them to LDS, Apex, or GraphQL, apply Salesforce styling, support Flow or other Salesforce surfaces, and write Jest tests.

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Install with agentmods
npx agentmods add skills/jaganpro/sf-skills/sf-lwc
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Jaganpro/sf-skills --skill sf-lwc
Clone the repo
git clone --depth 1 https://github.com/Jaganpro/sf-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for sf-lwc

README.md
[![agentmods](https://agentmods.dev/badge/skills/jaganpro/sf-skills/sf-lwc/github.svg)](https://agentmods.dev/skills/jaganpro/sf-skills/sf-lwc)
Your own site
<a href="https://agentmods.dev/skills/jaganpro/sf-skills/sf-lwc"><img src="https://agentmods.dev/badge/skills/jaganpro/sf-skills/sf-lwc/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for sf-lwc

Your own site · 80×15
<a href="https://agentmods.dev/skills/jaganpro/sf-skills/sf-lwc"><img src="https://agentmods.dev/badge/skills/jaganpro/sf-skills/sf-lwc.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 84 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,496 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • Socket pass 27 Apr 2026
  • Snyk pass 27 Apr 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00084 $0.01496
Opus 5 $0.00042 $0.00748
Sonnet 5 $0.00017 $0.00299
Haiku 4.5 $0.00008 $0.00150

Measured 11d ago against content hash ec1d0edbf58b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

sf-lwc scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

The scan reads SKILL.md. This mod also ships 18 executable files (assets/basic-component/basicComponent.js, assets/datatable-component/datatableComponent.js, assets/flow-screen-component/flowScreenComponent.js, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/sf-lwc/SKILL.md · 189 lines

How it starts

The opening of the file, as written. The whole thing — 189 lines — stays where its author put it; the contents beside it link to each section on GitHub.

sf-lwc: Lightning Web Components Development

Use this skill when the user needs Lightning Web Components: LWC bundles, wire patterns, Apex/GraphQL integration, SLDS 2 styling, accessibility, performance work, or Jest unit tests.

When This Skill Owns the Task

Use sf-lwc when the work involves:

  • lwc/**/*.js, .html, .css, .js-meta.xml
  • component scaffolding and bundle design
  • wire service, Apex integration, GraphQL integration
  • SLDS 2, dark mode, and accessibility work
  • Jest unit tests for LWC

Delegate elsewhere when the user is:

  • writing Apex controllers or business logic first → sf-apex
  • building Flow XML rather than an LWC screen component → sf-flow
  • deploying metadata → sf-deploy

Required Context to Gather First

Ask for or infer:

  • component purpose and target surface
  • data source: LDS, Apex, GraphQL, LMS, or external system via Apex
  • whether the user needs tests
  • whether the component must run in Flow, App Builder, Experience Cloud, or dashboard contexts
  • accessibility and styling expectations

1. Choose the right architecture

Use the PICKLES mindset:

  • prototype
  • integrate the right data source
  • compose component boundaries
  • define interaction model
  • use platform libraries
  • optimize execution
  • enforce security

2. Choose the right data access pattern

Need Default pattern
single-record UI LDS / getRecord
simple CRUD form base record form components
complex server query Apex @AuraEnabled(cacheable=true)
related graph data GraphQL wire adapter
cross-DOM communication Lightning Message Service

3. Start from an asset when useful

Use provided assets for:

  • basic component bundles
  • datatables
  • modal patterns
  • Flow screen components
  • GraphQL components
  • LMS message channels
  • Jest tests
  • TypeScript-enabled components

4. Validate for frontend quality

Check:

  • accessibility
  • SLDS 2 / dark mode compliance
  • event contracts
  • performance / rerender safety
  • Jest coverage when required

Read the full file on GitHub · 189 lines

Files

What ships with it

58 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 189 lines · 84 tokens per session scan A ec1d0edbf58b

Subscribe to this mod's changes

sf-lwc is a skill published in the GitHub repository Jaganpro/sf-skills (423 stars, last pushed 4mo ago), licensed MIT. It adds 84 tokens to every session and 1,496 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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