A set of frontend development guidance covering CSS, Tailwind CSS version 4, accessibility, and browser-specific web practices. Frontend work is the part of web development users see and interact with in a browser.

Use it when writing or reviewing web-page styles and interactions, using Tailwind CSS, checking accessibility, or handling browser-specific behavior.

It helps developers account for visual styling, accessibility needs, and differences between browsers when building web interfaces.

frontend — Plugin by xobotyi

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Claude Code

/plugin marketplace add xobotyi/cc-foundry

agentmods

npx agentmods add plugins/xobotyi/cc-foundry/frontend

Clone the repo

git clone --depth 1 https://github.com/xobotyi/cc-foundry

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

frontend 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 2d 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.

plugins/frontend/.claude-plugin/plugin.json · 22 lines

What it actually says

{
  "name": "frontend",
  "version": "1.2.6",
  "description": "Frontend platform discipline: CSS, Tailwind CSS v4, accessibility, and browser-specific practices",
  "author": {
    "name": "xobotyi",
    "email": "[email protected]",
    "url": "https://github.com/xobotyi"
  },
  "homepage": "https://github.com/xobotyi/cc-foundry/tree/master/plugins/frontend",
  "repository": "https://github.com/xobotyi/cc-foundry",
  "license": "MIT",
  "keywords": [
    "frontend",
    "css",
    "tailwind",
    "accessibility",
    "browser",
    "web"
  ]
}

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.

2d ago First seen · 22 lines scan A 6b0b9c1fd3d8

Subscribe to this mod's changes

frontend is a plugin published in the GitHub repository xobotyi/cc-foundry (20 stars, last pushed 2d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-08-30.

Browser automation Frontend Writing and docs

frontend

Getting it into your agent

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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