How do I install the Lint Design Figma skill?

Run npx skillmds@latest add southleft/lint-design-figma in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Lint Design Figma safe to use?

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Which AI agents work with Lint Design Figma?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Lint Design Figma free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Lint Design Figma?

southleft (@southleft) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Lint Design Figma by southleft — Agent Skill

Name: Lint Design Figma
Author: southleft

Lint Design Figma

Lint a Figma node tree for WCAG 2.2 accessibility AND design-system quality — contrast, target size, focus indicators, color-only signaling, hardcoded colors, missing text styles, detached components, and more. Use when the user wants a design-side audit BEFORE handoff: triggers 'lint this frame', 'check accessibility', 'WCAG audit', 'is my design accessible', 'find contrast issues', 'check color contrast', 'find hardcoded colors', 'are my components using tokens', 'design QA', 'a11y check on this page', 'audit my design for issues'. Walks the tree from a node (or the whole page) and returns findings with severity (critical/warning/info) and WCAG level (A/AA/AAA/best-practice). The native Figma MCP has NO design-side linting — this is unique to this collection. For the deep per-component a11y scorecard use audit-accessibility-figma; for CODE-side (HTML) checks use scan-code-accessibility-figma.

southleft 1b3cd11 3 files · 35.1 KB Updated Sep 17, 2026

File contents

lint-design-figma — WCAG 2.2 + design-system lint over a node tree

Walk a Figma node (or the whole current page) and report accessibility and design-quality problems in one pass. Runs entirely through use_figma, so it works on any Figma plan and inspects the real design (true colors, real auto-layout, actual variant names) rather than generated code.

Why this is unique: the native Figma MCP (get_design_context, get_metadata, etc.) reads designs for code generation but does not lint them. There is no built-in "is this accessible / token-clean?" check on the design side. This skill fills that gap with a faithful port of 14 WCAG 2.2 rules plus 6 design-system/layout rules.

Skill boundaries

use_figma rules — load the official figma-use skill first; it is the full Figma Plugin API reference. Essentials these scripts rely on: plain JS with top-level await + return (no IIFE, no figma.closePlugin(); console.log is not returned), inputs inlined as const at the top of each script, colors in 0–1 range, load fonts before any text op, await figma.getNodeByIdAsync(...), and atomic errors (a failed script applies nothing — read the error, fix, retry).
Per-component deep scorecard (state coverage, color-blind sim, 0–100 scores) → use audit-accessibility-figma.
CODE-side a11y (axe-core over generated HTML) → use scan-code-accessibility-figma.
Design-vs-code drift → use check-design-parity-figma.

Workflow

Pick the scope. Get the target NODE_ID (a frame, component set, or screen) from the user's selection or a URL. Leave it null to lint the entire current page.
Pick the rules. RULES defaults to ['all']. Narrow it to a group ('wcag', 'design-system', 'layout') or a specific rule id (e.g. 'wcag-contrast') to cut noise. The full catalog is in references/lint-rules.md.
Run scripts/lint-design.js via use_figma (skillNames: "lint-design-figma"). Edit the const inputs at the top first.
Triage by severity. The result groups findings by rule, each carrying severity (critical/warning/info) and wcagLevel (a/aa/aaa/best-practice/design-system). Lead with critical (contrast, target size, focus, color-only).
Fix + re-lint. Apply fixes (via manage-variables-figma, figma-use, etc.) and re-run the same scope to confirm summary.total dropped. Each finding includes the offending node.id so you can jump straight to it.

Key rules

Colors are 0–1 floats. Contrast math uses sRGB linearization + relative luminance; the script ships its own helpers (no hex needed for input).
Background is inferred by walking ancestors for the nearest solid fill (defaults to white). Contrast on semi-transparent fills is flagged approximate: true.
MAX_DEPTH (default 10) and MAX_FINDINGS (default 100) bound the walk. If truncated is set, narrow the scope or raise the cap.
WCAG-honest severity: some rules (text size, line height, letter/paragraph spacing) are labelled best-practice, not a hard WCAG failure — see lint-rules.md for the exact reasoning per rule.
Findings are descriptive, not auto-fixed. Confirm intent before bulk-editing a design.

---name: lint-design-figmadescription: Lint a Figma node tree for WCAG 2.2 accessibility AND design-system quality — contrast, target size, focus indicators, color-only signaling, hardcoded colors, missing text styles, detached components, and more. Use when the user wants a design-side audit BEFORE handoff: triggers 'lint this frame', 'check accessibility', 'WCAG audit', 'is my design accessible', 'find contrast issues', 'check color contrast', 'find hardcoded colors', 'are my components using tokens', 'design QA', 'a11y check on this page', 'audit my design for issues'. Walks the tree from a node (or the whole page) and returns findings with severity (critical/warning/info) and WCAG level (A/AA/AAA/best-practice). The native Figma MCP has NO design-side linting — this is unique to this collection. For the deep per-component a11y scorecard use audit-accessibility-figma; for CODE-side (HTML) checks use scan-code-accessibility-figma.---# lint-design-figma — WCAG 2.2 + design-system lint over a node treeWalk a Figma node (or the whole current page) and report accessibility and design-quality problemsin one pass. Runs entirely through `use_figma`, so it works on **any Figma plan** and inspects thereal design (true colors, real auto-layout, actual variant names) rather than generated code.**Why this is unique:** the native Figma MCP (`get_design_context`, `get_metadata`, etc.) readsdesigns for code generation but does **not** lint them. There is no built-in "is this accessible /token-clean?" check on the design side. This skill fills that gap with a faithful port of 14 WCAG 2.2rules plus 6 design-system/layout rules.## Skill boundaries- **`use_figma` rules** — load the official **`figma-use`** skill first; it is the full Figma Plugin API reference. Essentials these scripts rely on: plain JS with top-level `await` + `return` (no IIFE, no `figma.closePlugin()`; `console.log` is not returned), inputs inlined as `const` at the top of each script, colors in 0–1 range, load fonts before any text op, `await figma.getNodeByIdAsync(...)`, and **atomic errors** (a failed script applies nothing — read the error, fix, retry).- **Per-component deep scorecard** (state coverage, color-blind sim, 0–100 scores) → use `audit-accessibility-figma`.- **CODE-side a11y** (axe-core over generated HTML) → use `scan-code-accessibility-figma`.- **Design-vs-code drift** → use `check-design-parity-figma`.## Workflow1. **Pick the scope.** Get the target `NODE_ID` (a frame, component set, or screen) from the user's selection or a URL. Leave it `null` to lint the entire current page.2. **Pick the rules.** `RULES` defaults to `['all']`. Narrow it to a group (`'wcag'`, `'design-system'`, `'layout'`) or a specific rule id (e.g. `'wcag-contrast'`) to cut noise. The full catalog is in [references/lint-rules.md](references/lint-rules.md).3. **Run** [`scripts/lint-design.js`](scripts/lint-design.js) via `use_figma` (`skillNames: "lint-design-figma"`). Edit the `const` inputs at the top first.4. **Triage by severity.** The result groups findings by rule, each carrying `severity` (`critical`/`warning`/`info`) and `wcagLevel` (`a`/`aa`/`aaa`/`best-practice`/`design-system`). Lead with `critical` (contrast, target size, focus, color-only).5. **Fix + re-lint.** Apply fixes (via `manage-variables-figma`, `figma-use`, etc.) and re-run the same scope to confirm `summary.total` dropped. Each finding includes the offending `node.id` so you can jump straight to it.## Key rules- **Colors are 0–1 floats.** Contrast math uses sRGB linearization + relative luminance; the script ships its own helpers (no hex needed for input).- **Background is inferred** by walking ancestors for the nearest solid fill (defaults to white). Contrast on semi-transparent fills is flagged `approximate: true`.- **`MAX_DEPTH`** (default 10) and **`MAX_FINDINGS`** (default 100) bound the walk. If `truncated` is set, narrow the scope or raise the cap.- **WCAG-honest severity:** some rules (text size, line height, letter/paragraph spacing) are labelled `best-practice`, not a hard WCAG failure — see lint-rules.md for the exact reasoning per rule.- Findings are descriptive, not auto-fixed. Confirm intent before bulk-editing a design.

Frequently asked questions