design-brief

name	design-brief
en_name	Design Brief
zh_name	设计简报
description	Parse a structured design brief written in I-Lang protocol format into a concrete design spec. Eliminates ambiguity from vague requests like "make it professional" by requiring explicit dimensions: palette, typography, layout, mood, density, and constraints. Trigger keywords: "design brief", "create a design brief", "ilang brief", "structured brief".
en_description	Parse a structured design brief written in I-Lang protocol format or natural language into a concrete design spec, reducing ambiguity by making palette, typography, layout, mood, density, and constraints explicit.
zh_description	将 I-Lang 协议格式或自然语言设计简报解析为具体设计规范，明确调色板、字体、布局、氛围、密度和约束，减少“专业一点”等模糊描述带来的歧义。
triggers	["design brief","create a design brief","ilang brief","structured brief"]
od	{"mode":"design-system","platform":"desktop","scenario":"planning","preview":{"type":"html","entry":"brief-preview.html","reload":"debounce-100"},"design_system":{"requires":false,"generates":true,"sections":["visual-theme","color-palette","typography","component-stylings","layout","depth-elevation","dos-and-donts","responsive","agent-prompt-guide"]},"inputs":[{"name":"brief","type":"string","required":true,"description":"I-Lang formatted design brief or natural language description"}],"outputs":{"primary":"DESIGN.md","secondary":"brief-preview.html"},"capabilities_required":["file_write"]}

Design Brief Skill

Parse a structured design brief into a concrete DESIGN.md and optional visual preview. Agent, follow this workflow exactly.

Background

The 8 dimensions in this skill are derived from analysis of the 71 design systems bundled with Prototype Design. Every DESIGN.md in design-systems/ resolves at minimum: color palette, accent, typography, display font, layout model, and component style. We distilled these into 8 orthogonal dimensions that cover the decisions a designer makes before any pixel is placed. Mood and density were added because they are the two most common sources of ambiguity in natural language briefs ("make it clean" means different things to different people).

Dimensions intentionally excluded from the brief level: animation timing, responsive strategy, and accessibility contrast. These are enforced at the template level by individual skills (e.g., saas-landing handles its own responsive logic), though the generated DESIGN.md includes sensible breakpoint defaults for downstream consumption.

1. Accept input

The user provides a design brief in one of two formats:

Option A: I-Lang structured brief

[PLAN:@DESIGN|type=saas_landing]
  |palette=navy_and_white|accent=coral
  |typography=inter|display=space_grotesk
  |layout=single_column|max_width=1200px
  |mood=professional_minimal
  |density=spacious|section_gap=96px
  |hero=headline+subhead+cta
  |sections=features,pricing,testimonials,footer
  |exclude=animations,parallax,gradients
  |responsive=mobile_first

Option B: Natural language

"I need a landing page for a developer tool. Clean, minimal, dark mode. Inter font. No flashy animations."

If the user provides Option B, convert it to the structured format using the mapping table below, then proceed. Identify every dimension explicitly stated and flag dimensions that were left unspecified.

Natural language → I-Lang mapping

For each sentence in the natural language input, identify dimension keywords and map to the closest structured value:

Natural language phrase	Dimension	I-Lang value
"dark mode", "dark theme"	palette	monochrome_dark
"light", "white background"	palette	light_clean
"earthy", "warm tones"	palette	earth_tones