Skip to content
TrustedSkillsbeta
Back to all skills

Mobile First Design

Checked
secondsky·vlatest·frontend·MIT

Helps with mobile development, design as part of building frontend UIs and user experiences workflows.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add secondsky/claude-skills --skill mobile-first-design -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

secondsky

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned secondsky/claude-skills at 8837836131.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
8837836131
Manifest
plugins/mobile-first-design/skills/mobile-first-design/SKILL.md
Scanned
1 file, 101 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

This skill enables AI agents to generate responsive web layouts that prioritize mobile devices, ensuring interfaces adapt seamlessly across screen sizes. It focuses on creating efficient, touch-friendly user experiences from the ground up rather than retrofitting desktop designs.

When to use it

  • Building progressive web apps (PWAs) for users with limited bandwidth or older hardware.
  • Developing e-commerce sites where thumb navigation and mobile checkout flows are critical.
  • Creating content-heavy dashboards that must remain usable on small smartphone screens.
  • Prototyping new features quickly without the overhead of managing complex desktop breakpoints.

Key capabilities

  • Generates fluid grid systems that scale automatically to fit various viewport widths.
  • Optimizes touch target sizes and spacing for accurate mobile interaction.
  • Prioritizes above-the-fold content visibility on smaller displays.
  • Ensures consistent typography and readability across all device resolutions.

Example prompts

"Create a landing page layout using mobile-first principles that highlights our three core services immediately." "Design a responsive navigation menu that transforms into a hamburger icon on devices narrower than 768px." "Build a product card grid that stacks vertically on mobile but arranges in a 2x2 layout on tablets."

Tips & gotchas

Ensure your base CSS or framework settings explicitly define mobile constraints before adding tablet or desktop overrides. Avoid relying solely on media queries; instead, design the core structure for the smallest screen first to prevent layout breakage.