What is frontend-developer?

A set of development guidance for building React interfaces, responsive layouts, and client-side state. React is a JavaScript library for building user interfaces.

Creating or fixing React and Next.js interfaces, including responsive components, browser-side state, performance, and accessibility.

It helps address frontend implementation, performance, accessibility, and application-structure concerns.

How b19805652/cloudflare-image-mcp-s3 configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to b19805652/cloudflare-image-mcp-s3. 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/b19805652/cloudflare-image-mcp-s3/main/.claude/skills/frontend-developer/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/b19805652/cloudflare-image-mcp-s3

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/b19805652/cloudflare-image-mcp-s3/frontend-developer/github.svg)](https://agentmods.dev/skills/b19805652/cloudflare-image-mcp-s3/frontend-developer)

Your own site

<a href="https://agentmods.dev/skills/b19805652/cloudflare-image-mcp-s3/frontend-developer"><img src="https://agentmods.dev/badge/skills/b19805652/cloudflare-image-mcp-s3/frontend-developer/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/b19805652/cloudflare-image-mcp-s3/frontend-developer"><img src="https://agentmods.dev/badge/skills/b19805652/cloudflare-image-mcp-s3/frontend-developer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 55 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,469 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 unknown 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.

Model	Per session	Once invoked
Fable 5.1	$0.00055	$0.01469
Opus 5.5	$0.00022	$0.00588
Sonnet 5.5	$0.00011	$0.00294
Haiku 4.5	$0.00006	$0.00147

Measured 2mo ago against content hash 0af0d24b59e5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

frontend-developer 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/frontend-developer/SKILL.md · 172 lines

The source is not reproduced here

No licence file

Read it on GitHub

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.

2mo ago First seen · 172 lines · 55 tokens per session scan A 0af0d24b59e5

Subscribe to this mod's changes

frontend-developer is a skill published in the GitHub repository b19805652/cloudflare-image-mcp-s3 (0 stars, last pushed 4mo ago), with no licence file. It adds 55 tokens to every session and 1,469 once invoked, about $0.0002 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.

Frontend React

frontend-developer next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
frontend-developerb19805652/cloudflare-image-mcp-s3	Skill	0	4mo ago	none	A	55	Claude Code
build-ghost-appTryGhost/Ghost	Skill	56k	yesterday	MIT	A	44	Claude Code, Codex
chakra-ui-builderchakra-ui/chakra-ui	Skill	41k	yesterday	MIT	A	214	Claude Code, Codex
material-ui-tailwindmui/material-ui	Skill	99k	yesterday	MIT	A	67	Claude Code, Codex
fuzzy-rankingTanStack/table	Skill	29k	4d ago	MIT	A	62	Claude Code, Codex
r3f-best-practiceszebbern/claude-code-guide	Skill	4.7k	3d ago	MIT	A	74	Claude Code, Codex
git-safetytamagui/tamagui	Skill	14k	today	MIT	A	0	Claude Code

cloudflare-image-mcp-s3: Skill for Claude Code