Agent skill · design visual · nexu-io
wireframe-greybox
A crisp greybox / blueprint lo-fi wireframe — neutral grey blocks on a pale page, image placeholders drawn as a rectangle with a diagonal X, text shown as solid "lorem bars" of varying widths, sharp 1.5–2px borders, and a single monospace redline accent for annotations. Reads like a structural blueprint before any visual design is applied. Use when the brief asks for "greybox", "blueprint wireframe", "lo-fi dashboard", "low fidelity", "线框图", or "灰盒原型".
Why this skill is useful
Provides a structured approach to creating low-fidelity wireframes with specific design patterns and HTML output requirements that the AI wouldn't reliably generate on its own.
What it needs
About 2k tokens when loaded. Last updated 2026-08-07. 84,236 stars on the source repository.
What this skill does
Wireframe Greybox Skill Produce a single crisp greybox wireframe page. The whole point is structure, not skin — communicate hierarchy and layout with neutral grey blocks, never with real color, copy, or imagery. Everything is a placeholder: text is grey "lorem bars", images are rectangles with a diagonal cross, numbers are big solid blocks. The only color on the page is the single redline accent reserved for monospace annotations. Workflow 1. Stay structural. Ignore any DESIGN.md that pushes finished UI — this is deliberately low fidelity. Use a clean system sans (Inter / system-ui) for shape and a mono (IBM Plex Mono / JetBrains Mono) for the redline annotations only. No hand-drawn fonts, no brand color. 2. Set the greybox palette. Page is a pale neutral (#f7f7f8), blocks are medium grey (#e3e3e6), borders are crisp and defined (#c9c9cf for soft edges, #1c1b1a for emphasis), and exactly one accent (a blue or coral redline) carries every monospace annotation. Keep contrast high enough to read as a small thumbnail — never near-white-on-white. 3. Lay out the dashboard, in order, each on its own data-od-id: App bar — a logo greybox, a row of nav lorem-bars, and an avatar circle on the right. Sidebar nav — icon squares + lorem-bar labels; mark one item active with a filled/inverted block. KPI row — four greyboxes, each a small label bar above a big solid "number" bar. Chart panel — an inline SVG greybox: axes plus a few hatched/grey bars or a schematic line. No real data. List / table panel — a header row plus ~5 rows of lorem bars, with one column of image-placeholders drawn as a box with a diagonal X. Annotations — one or two small monospace redlines pinned to the canvas (e.g. 01 · 12-col grid, max-width 1280). 4. Write one self-contained HTML document — <!doctype html> through </html>, CSS inline, no external JS or images. SVG and CSS draw every placeholder. A max-width container plus a media query collapses columns under ~1000px. 5. Self-check. …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills nexu-io/wireframe-greybox--a5453d