What is lwc-developer?

An assistant for building and reviewing Salesforce Lightning Web Components, the reusable user-interface elements used in Salesforce. It also works with Apex data access, wire services, events, accessibility, and Jest tests.

Use it to create or review Salesforce user interfaces, connect them to Salesforce data, handle user interactions, and write component tests.

It helps keep components consistent, secure, accessible, and prepared for loading, error, and empty states.

lwc-developer — Agent for Claude Code by karkranikhil/sf-ai-toolkit

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.

Clone the repo

git clone --depth 1 https://github.com/karkranikhil/sf-ai-toolkit

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/karkranikhil/sf-ai-toolkit/lwc-developer/github.svg)](https://agentmods.dev/agents/karkranikhil/sf-ai-toolkit/lwc-developer)

Your own site

<a href="https://agentmods.dev/agents/karkranikhil/sf-ai-toolkit/lwc-developer"><img src="https://agentmods.dev/badge/agents/karkranikhil/sf-ai-toolkit/lwc-developer/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.

Your own site · 80×15

<a href="https://agentmods.dev/agents/karkranikhil/sf-ai-toolkit/lwc-developer"><img src="https://agentmods.dev/badge/agents/karkranikhil/sf-ai-toolkit/lwc-developer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 42 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 227 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.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00042	$0.00227
Opus 5.5	$0.00017	$0.00091
Sonnet 5.5	$0.00008	$0.00045
Haiku 4.5	$0.00004	$0.00023

Measured 2mo ago against content hash 949d8e9d91d3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

lwc-developer 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 2mo ago.

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.

examples/existing-project-after/.claude/agents/lwc-developer.md · 32 lines

What it actually says

LWC Developer Agent

You are a senior Salesforce LWC developer.

Your role

Build and review Lightning Web Components.
Create secure, accessible, and well-tested UI components.
Integrate components with Apex controllers and wire services.
Write Jest tests for component logic.
Follow existing project component patterns.

Rules

Always handle loading, error, and empty states.
Use Custom Labels for user-visible strings.
Use wire adapters for reactive data.
Keep Apex methods cacheable where appropriate.
Enforce CRUD/FLS in all Apex controllers.
No sensitive data in component attributes or events.
Run ESLint before completing: npm run lint:lwc
Follow SLDS design system patterns.

Output format

Provide all component files (HTML, JS, CSS, Apex if needed, Jest test). Explain the component's data flow and state management.

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.

2mo ago First seen · 32 lines · 42 tokens per session scan A 949d8e9d91d3

Subscribe to this mod's changes

lwc-developer is an agent published in the GitHub repository karkranikhil/sf-ai-toolkit (2 stars, last pushed 6mo ago), licensed MIT. It adds 42 tokens to every session and 227 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-31.

Frontend

lwc-developer next to 6 agents from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
lwc-developerkarkranikhil/sf-ai-toolkit	Agent	2	6mo ago	MIT	A	42	Claude Code
playwright-test-generatormicrosoft/playwright	Agent	99k	today	Apache-2.0	A	151	Claude Code
.NET-Notebook-Migration-Agentmicrosoft/ai-agents-for-beginners	Agent	79k	today	MIT	A	33	Claude Code
code-revieweranthropics/claude-cookbooks	Agent	54k	2d ago	MIT	A	52	Claude Code
AVM Owner Triagegithub/awesome-copilot	Agent	41k	today	MIT	A	61	Claude Code
Ultimate Transparent Thinking Beast Modegithub/awesome-copilot	Agent	41k	today	MIT	A	11	Claude Code
WinForms Expertgithub/awesome-copilot	Agent	41k	today	MIT	A	19	Claude Code