Figma handoff

Skill mkatogui/universal-design-system/plugins/universal-design-system/skills/figma-handoff

Figma to code handoff using UDS tokens. Align Figma variables with design-tokens.json, naming conventions, Dev Mode, and token sync.From its SKILL.md

Install

npx -y skills add mkatogui/universal-design-system --skill figma-handoff

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SKILL.md

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Figma Handoff — UDS Skill

Use this skill when the user needs design-to-code handoff or Figma alignment with the Universal Design System. UDS provides W3C DTCG design tokens, a Figma-compatible token file, and a token writer for custom palettes.

When to Use

User wants to sync Figma with code (tokens, variables, Dev Mode).
User is setting up Figma Variables or Tokens Studio to match the codebase.
User needs naming conventions so developers see token names (e.g. color.primary) instead of raw hex in Dev Mode.
User wants to keep tokens/design-tokens.json and Figma in sync.

Source of Truth

Code/tokens: tokens/design-tokens.json — W3C DTCG format, 3-tier (primitive → semantic → palette overrides). This is the single source of truth for the build.
Figma: tokens/figma-tokens.json — Figma Tokens Studio compatible. Must stay in sync with design-tokens.json for consistent handoff.
Validation: scripts/validate-tokens.py — validates DTCG structure and cross-file sync between design tokens and Figma tokens. Run after any token change.

Naming Conventions for Handoff

So developers see token names in Figma Dev Mode (not just raw values):

Colors: Use semantic names, e.g. color.primary, color.background, color.text.primary, with modes for Light/Dark.
Spacing: Align with UDS scale: space.4, space.8, space.16, etc. (4px base).
Typography: type.heading.lg, type.body.md, etc., matching UDS typography scale.
Radius: radius.sm, radius.md, radius.lg — per-palette in UDS.
Collections and modes: Use Figma variable collections with modes (e.g. Light/Dark) so Dev Mode shows the right values per theme.

Sync Workflow

Change tokens in one place: Prefer editing tokens/design-tokens.json (and running the build) so CSS/JS outputs stay correct.
Update Figma tokens: Use src/scripts/token_writer.py to generate Figma token entries for custom palettes; for the core system, ensure tokens/figma-tokens.json is updated to match design-tokens.json (structure and values).
Run validation: npm run validate (or python scripts/validate-tokens.py) to check DTCG format and cross-file sync.
Build: npm run build runs Style Dictionary and produces platform outputs (CSS, JS, iOS, Android) from design-tokens.json.

Figma Dev Mode Tips

Designers: Use Figma Variables (native) or Tokens Studio; avoid local styles for colors/spacing/typography so Dev Mode can show token names.
Dev handoff page: Include a short note on naming (e.g. "Colors use semantic tokens; see design-tokens.json"). Link to component docs or Storybook if available.
Developer notes: Add annotations in Figma pointing to design-tokens.json or the docs so developers know where to read token values and usage.

Token Writer (Custom Palettes)

For custom palettes derived from UDS (e.g. palette.py create "my-palette" --base corporate), the token writer can generate Figma token entries matching tokens/figma-tokens.json format. Use this to keep custom brand tokens in sync with Figma.

Quick Reference

Asset	Purpose
`tokens/design-tokens.json`	Source of truth; DTCG format; used by Style Dictionary build
`tokens/figma-tokens.json`	Figma Tokens Studio compatible; keep in sync with design-tokens.json
`scripts/validate-tokens.py`	Validates structure and cross-file sync
`src/scripts/token_writer.py`	Generates Figma token entries for custom palettes
`npm run build`	Builds CSS/JS/iOS/Android from design-tokens.json