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spekka: Skill for Claude Code

.claude/skills/spekka-frontend-responsive/SKILL.md

Frontend Responsive is a skill for Claude Code from johnreitano/spekka. It costs 24 tokens per session (260 once invoked), scanned A, original, MIT.

Guidance for building interfaces that remain usable on phones, tablets, and desktop screens. Responsive design means a page adapts its layout to the available screen size.

In plain words
What is it for?
Use it when designing mobile-first layouts, screen-size breakpoints, flexible dimensions, accessible controls, readable typography, and mobile-friendly images.
Why use it?
It helps prevent cramped layouts, difficult tapping, unreadable text, and poor performance on smaller devices.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: mentions Claude Code.

This is johnreitano/spekka's own configuration. It tells Claude Code how to work on spekka itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything spekka configures →

not rated 5repo 9mo ago A scan 24 tokens original MIT
View source ↗ johnreitano/spekka
Reuse

Borrowing it

Nothing to install: this file belongs to johnreitano/spekka. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/johnreitano/spekka/main/.claude/skills/spekka-frontend-responsive/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/johnreitano/spekka

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for Frontend Responsive

README.md
[![agentmods](https://agentmods.dev/badge/skills/johnreitano/spekka/spekka-frontend-responsive/github.svg)](https://agentmods.dev/skills/johnreitano/spekka/spekka-frontend-responsive)
Your own site
<a href="https://agentmods.dev/skills/johnreitano/spekka/spekka-frontend-responsive"><img src="https://agentmods.dev/badge/skills/johnreitano/spekka/spekka-frontend-responsive/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for Frontend Responsive

Your own site · 80×15
<a href="https://agentmods.dev/skills/johnreitano/spekka/spekka-frontend-responsive"><img src="https://agentmods.dev/badge/skills/johnreitano/spekka/spekka-frontend-responsive.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 260 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00024 $0.00260
Opus 5.5 $0.00010 $0.00104
Sonnet 5.5 $0.00005 $0.00052
Haiku 4.5 $0.00002 $0.00026

Measured 2mo ago against content hash 2b684b25b7f1, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Frontend Responsive scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/spekka-frontend-responsive/SKILL.md · 21 lines

What it actually says

Frontend Responsive

This Skill provides Claude Code with specific guidance on how it should handle frontend responsive.

Instructions

  • Mobile-First Development: Start with mobile layout and progressively enhance for larger screens
  • Standard Breakpoints: Consistently use standard breakpoints across the application (e.g., mobile, tablet, desktop)
  • Fluid Layouts: Use percentage-based widths and flexible containers that adapt to screen size
  • Relative Units: Prefer rem/em units over fixed pixels for better scalability and accessibility
  • Test Across Devices: Test and verify UI changes across multiple screen sizes from mobile to tablet to desktop screen sizes and ensure a balanced, user-friendly viewing and reading experience on all
  • Touch-Friendly Design: Ensure tap targets are appropriately sized (minimum 44x44px) for mobile users
  • Performance on Mobile: Optimize images and assets for mobile network conditions and smaller screens
  • Readable Typography: Maintain readable font sizes across all breakpoints without requiring zoom
  • Content Priority: Show the most important content first on smaller screens through thoughtful layout decisions
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 21 lines · 24 tokens per session scan A 2b684b25b7f1

Subscribe to this mod's changes

Frontend Responsive is a skill published in the GitHub repository johnreitano/spekka (5 stars, last pushed 9mo ago), licensed MIT. It adds 24 tokens to every session and 260 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

CSS and stylingFrontend
Related

Frontend Responsive compared with skills from other repositories

Frontend Responsive next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
Frontend Responsivejohnreitano/spekkaSkill59mo agoMITA24Claude Code
anti-slop-designsickn33/agentic-awesome-skillsSkill49kyesterdayMITA34Claude Code
chakra-ui-builderchakra-ui/chakra-uiSkill41kyesterdayMITA214Claude Code, Codex
visual-ralphYeachan-Heo/oh-my-codexSkill34k3d agoMITA52Codex
open-design-setupcompozy/compozySkill2.8kyesterdayMITA67Claude Code, Codex
edit-sitemicrosoft/power-platform-skillsSkill1.1kyesterdayMITA104Claude Code
frontend-visual-qadaymade/claude-code-skillsSkill1.5kyesterdayMITA125Claude Code, Codex