What is design-systems-slds-apply?

A practical guide to building Salesforce user interfaces with the Lightning Design System, a collection of approved components, layout patterns, styling hooks, utility classes, and icons.

Use it when creating UI, selecting components or blueprints, adding layout and spacing, applying themeable styles, or choosing icons.

It helps choose the right Salesforce UI pattern and apply consistent styling without relying on deprecated tokens or ad-hoc CSS. It supports both Lightning Web Components and general HTML/CSS blueprint use.

design-systems-slds-apply — Skill by forcedotcom/sf-skills

About the project

forcedotcom/sf-skills is a collection of reusable instructions that help AI coding agents build and work with Salesforce applications and platform features. Developers use it for Agentforce agents, Lightning apps, Flow, Apex, SOQL, Lightning Web Components, and related Salesforce configuration. The catalogue entries are the repository’s skills, plugins, commands, MCP servers, and agents for AI tools that support skills.

forcedotcom/sf-skills · 1,097 stars · on GitHub

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 forcedotcom/sf-skills --skill design-systems-slds-apply

Clone the repo

git clone --depth 1 https://github.com/forcedotcom/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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/forcedotcom/sf-skills/design-systems-slds-apply/github.svg)](https://agentmods.dev/skills/forcedotcom/sf-skills/design-systems-slds-apply)

Your own site

<a href="https://agentmods.dev/skills/forcedotcom/sf-skills/design-systems-slds-apply"><img src="https://agentmods.dev/badge/skills/forcedotcom/sf-skills/design-systems-slds-apply/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/skills/forcedotcom/sf-skills/design-systems-slds-apply"><img src="https://agentmods.dev/badge/skills/forcedotcom/sf-skills/design-systems-slds-apply.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 101 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,804 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 18 Aug 2026
Snyk pass 18 Aug 2026
NVIDIA SkillSpector warn 7 Sept 2026

SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

medium MCP Rug Pull · line 255
npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.

Fix: Pin the version: npx @scope/[email protected]

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.

Model	Per session	Once invoked
Fable 5.1	$0.00101	$0.03804
Opus 5.5	$0.00040	$0.01522
Sonnet 5.5	$0.00020	$0.00761
Haiku 4.5	$0.00010	$0.00380

Measured 1mo ago against content hash c54bf1ab0706, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

design-systems-slds-apply 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 1mo 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.

skills/design-systems-slds-apply/SKILL.md · 331 lines

How it starts

The opening of the file, as written. The whole thing — 331 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Applying SLDS

The Salesforce Lightning Design System (SLDS) is a CSS framework with thousands of artifacts. This skill teaches agents how to find and correctly use them.

Version: This skill targets SLDS v2. Legacy --lwc-* tokens and slds-*--modifier syntax are deprecated.

Audit scope: The companion design-systems-slds-validate skill analyzer only scans .css, .html, and .js files. Use it directly for LWC and similar HTML/CSS/JS components; treat it as a partial signal for JSX/TSX or other framework-specific template formats and supplement with manual review.

What is SLDS?

Artifact	Count	Description
Lightning Base Components	~70	Pre-built LWC components (LWC only)
SLDS Blueprints	85	CSS/HTML patterns for any framework
Styling Hooks	523	CSS custom properties (`--slds-g-*`) for theming
Utility Classes	1,147	Rapid styling classes for spacing, layout, visibility
Icons	1,732	SVG icons across 5 categories

Scope

This skill covers:

Which blueprint to use for a given UI pattern
How to style with hooks (color, spacing, typography, shadows, borders)
Which utility classes to use for layout, spacing, visibility
Which icon to use and from which category
SLDS naming conventions, class structure, hook syntax

This skill includes basic accessibility reminders (icon alt text, focus outlines, color-not-sole-indicator) in the validation checklists. Full WCAG compliance requires a dedicated accessibility review.

This skill does NOT cover (use companion skills):

Design decisions -- visual hierarchy, composition, interaction patterns
LWC mechanics -- component structure, @wire, @api, lifecycle, events (not yet available)
Full accessibility -- WCAG conformance, ARIA patterns, keyboard navigation, focus management, contrast ratios (not yet available)

Component Selection Hierarchy

Always follow this order:

Read the full file on GitHub · 331 lines

Files

What ships with it

60 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.

1mo ago First seen · 331 lines · 101 tokens per session scan A c54bf1ab0706

Subscribe to this mod's changes

design-systems-slds-apply is a skill published in the GitHub repository forcedotcom/sf-skills (1,097 stars, last pushed today), licensed Apache-2.0. It adds 101 tokens to every session and 3,804 once invoked, about $0.0004 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 2026-09-03.

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