generic-static-feature-developer

generic-static-feature-developer is a skill for Claude Code, Codex from travisjneuman/.claude. It costs 40 tokens per session (1,027 once invoked), scanned A, original, MIT.

A guide to adding features to websites built with plain HTML, CSS, and JavaScript, without a framework or build system. It covers development workflows, automation, progressive enhancement, and content checks.

In plain words
What is it for?
Use it to add or modify static-site features, test them locally, automate site tasks, and validate content before publishing.
Why use it?
It helps developers plan changes in a simple static-site structure and check that new content and interactions work across browsers and screen sizes. Progressive enhancement means the basic page remains usable even when some JavaScript is unavailable.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions CLAUDE.md.

Good fit Use it to add or modify static-site features, test them locally, automate site tasks, and validate content before publishing.

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Install with agentmods
npx agentmods add skills/travisjneuman/.claude/generic-static-feature-developer
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.

Any agent
npx skills add travisjneuman/.claude --skill generic-static-feature-developer
Clone the repo
git clone --depth 1 https://github.com/travisjneuman/.claude

Made for: Claude Code, Codex.

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 generic-static-feature-developer

README.md
[![agentmods](https://agentmods.dev/badge/skills/travisjneuman/.claude/generic-static-feature-developer/github.svg)](https://agentmods.dev/skills/travisjneuman/.claude/generic-static-feature-developer)
Your own site
<a href="https://agentmods.dev/skills/travisjneuman/.claude/generic-static-feature-developer"><img src="https://agentmods.dev/badge/skills/travisjneuman/.claude/generic-static-feature-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.

agentmods 80×15 button for generic-static-feature-developer

Your own site · 80×15
<a href="https://agentmods.dev/skills/travisjneuman/.claude/generic-static-feature-developer"><img src="https://agentmods.dev/badge/skills/travisjneuman/.claude/generic-static-feature-developer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,027 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium MCP Rug Pull · line 43
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
How audits are shown
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 $0.00040 $0.01027
Opus 5 $0.00020 $0.00513
Sonnet 5 $0.00008 $0.00205
Haiku 4.5 $0.00004 $0.00103

Measured 6d ago against content hash d839f7e6912a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

generic-static-feature-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 6d 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.

skills/generic-static-feature-developer/SKILL.md · 192 lines

How it starts

The opening of the file, as written. The whole thing — 192 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Static Site Feature Developer

Guide feature development for minimalist static sites.

Extends: Generic Feature Developer - Read base skill for development workflow, scope assessment, and build vs integrate decisions.

Static Site Architecture

Typical Structure

project/
├── index.html          # Main page
├── style.css           # All styles
├── script.js           # All interactions
├── assets/             # Images, icons
├── .github/workflows/  # Automation (optional)
└── docs/               # Documentation

No Build Tools Philosophy

Edit → Save → Deploy (that's it)

  • Pure HTML (no templating engines)
  • Pure CSS (no Sass/Less/PostCSS)
  • Pure JS (no bundling, no transpilation)
  • No node_modules in production

Development Workflow

Local Testing

# Start local server (cross-platform options)
python -m http.server 8000   # Windows
python3 -m http.server 8000  # macOS/Linux
npx serve .                  # Node.js (recommended - all platforms)
# Visit http://localhost:8000

Before Committing

  1. Test in Chrome, Firefox, Safari
  2. Test at 375px, 768px, 1024px
  3. Run Lighthouse audit
  4. Screenshot current state (for comparison)

Progressive Enhancement

Philosophy

  1. Content first - Works without CSS/JS
  2. Enhance with CSS - Better styling for capable browsers
  3. Enhance with JS - Interactivity for JS-enabled browsers

Example Pattern

<!-- Works without JS -->
<details>
  <summary>Menu</summary>
  <nav>
    <a href="#about">About</a>
    <a href="#contact">Contact</a>
  </nav>
</details>
// Enhancement: Custom animation when JS available
if ("IntersectionObserver" in window) {
  // Progressive enhancement
}

Vanilla JavaScript Patterns

Event Delegation

// One listener for many elements
document.body.addEventListener("click", (e) => {
  if (e.target.matches(".menu-toggle")) {
    toggleMenu();
  }
  if (e.target.matches(".close-btn")) {
    closeModal();
  }
});

Read the full file on GitHub · 192 lines

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. 6d ago First seen · 192 lines · 40 tokens per session scan A d839f7e6912a

Subscribe to this mod's changes

generic-static-feature-developer is a skill published in the GitHub repository travisjneuman/.claude (97 stars, last pushed 4d ago), licensed MIT. It adds 40 tokens to every session and 1,027 once invoked, about $0.0002 per session on Opus 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 2026-09-03.