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SKL · 14PRO

Terminal.

The prompt, the cursor, the monospace grid. Terminal design takes the CLI's honest visual vocabulary and turns it into a complete design system.

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01 · The Vibe

The command line never went away — it just moved. Terminal design takes the visual vocabulary of the shell and makes it a design system: the prompt character, the blinking cursor, the command-response pattern, the monospace type that knows it's monospace and leans into it. But this isn't a developer tool in disguise — it's a design philosophy. Apps built with Terminal style look like they were designed by someone who deeply understood what made early computer interfaces beautiful and then rebuilt that understanding for the modern web. Structured, honest, and strangely timeless.

● Looks Like
macOS TerminaliTerm2 with a good themeWarp terminalLinear's design language (partially)The most visually impressive CLI tools wrapped in a GUIVercel's dashboard at its most minimalA text editor configured by someone with taste
02 · Best For / Avoid If
＋ Best For
+Developer tools and engineering platforms
+CLI companion web interfaces
+Documentation sites and technical references
+Tools where power users are the primary audience
+Products where "no nonsense" is a brand value
+Portfolios for engineers and technical founders
× Avoid If
×Non-technical users are a significant part of your audience
×Your product needs to feel warm, consumer-friendly, or emotionally engaging
×You need rich media — images and video break the aesthetic completely
×You're building in an industry where design credibility (not technical credibility) is the primary trust signal
03 · Design Philosophy
01

The prompt is the interaction model

Every interaction in a terminal follows the same pattern: prompt, input, response. This call-and-response rhythm — > user input, then system output — is the most honest representation of how computers work. Terminal design makes this pattern visible in the UI, even when the user isn't literally typing commands. Labels are prefixed. Responses are indented. The structure of the interface tells the story of how it works.

02

Monospace is not a constraint — it's the grid

Fixed-width type creates a grid that no layout system can replicate. Every column aligns. Every row is the same height. Numbers stack with perfect precision. Terminal design uses this grid as the primary layout system — not a backdrop, but the structure itself. When designers work with monospace rather than against it, the results have a mathematical coherence that proportional type can never match.

03

The cursor blinks, therefore it lives

The blinking cursor is the oldest animation in computing — and still one of the most meaningful. It says: the system is alive, it is waiting, it is ready. Terminal design brings this aliveness to UI through small, purposeful animations: text that appears character by character, prompts that blink while waiting for input, progress shown as a stream of output rather than a spinning circle. The interface communicates its inner life.

04 · Use With Claude / Cursor
Claude
01Open your Claude project
02Click 'Add files' in the Project Knowledge panel
03Drop in SKILL.md and DESIGN.md
04Start a new chat in the project — Claude follows the spec
Cursor
01Place SKILL.md and DESIGN.md in your repo root
02Open .cursor/rules and add @SKILL.md @DESIGN.md
03Restart Cursor for the rules to apply
04Build normally — Cursor references both files per request
★ PRO TIP

Before building with Claude Code, drop SKILL.md and DESIGN.md into Claude Design first. Use it to generate mockups and nail the visual direction — then hand those references to Claude Code. You'll get significantly higher quality output than going straight to code.

05 · Watch Out For
! WARNING
Mistaken for a real terminal
If the interface looks too much like an actual shell, users may expect to type commands and feel confused when they can't. Make sure interactive elements are clearly interactive — labeled buttons, obvious inputs, clear CTAs — even within the aesthetic.
! WARNING
Illegible color schemes
Classic terminal green-on-black is genuinely hard to read for long periods. Use a slightly warm off-white text on a dark charcoal background, with color reserved for prompts and highlights only. Eyes matter.
! WARNING
Overusing the prompt character
The > prefix is powerful when used for genuinely interactive or input elements. When used on every label and heading it becomes noise. Reserve it for things the user actually acts on.
! WARNING
No hierarchy
Monospace type and uniform color can create screens with no clear entry point. Establish a clear typographic hierarchy with at least three distinct size steps, and use one accent color to draw the eye to the most important element on each screen.
● 07 · Download

Two files. That's it.

Drop them into your Claude project or Cursor rules and build normally. No CLI, no package manager, no setup.

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