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.
npx skills add travisjneuman/.claude --skill pwa-developmentgit clone --depth 1 https://github.com/travisjneuman/.claudeWrote 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.
[](https://agentmods.dev/skills/travisjneuman/.claude/pwa-development)<a href="https://agentmods.dev/skills/travisjneuman/.claude/pwa-development"><img src="https://agentmods.dev/badge/skills/travisjneuman/.claude/pwa-development/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.
<a href="https://agentmods.dev/skills/travisjneuman/.claude/pwa-development"><img src="https://agentmods.dev/badge/skills/travisjneuman/.claude/pwa-development.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00035 | $0.03159 |
| Opus 5.5 | $0.00014 | $0.01264 |
| Sonnet 5.5 | $0.00007 | $0.00632 |
| Haiku 4.5 | $0.00003 | $0.00316 |
Grade A, and why
pwa-development scanned grade A with 1 finding 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 17d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
return fetch(event.request).then((response) => { How it starts
The opening of the file, as written. The whole thing — 567 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Progressive Web App (PWA) Development
Build installable, offline-capable web applications that work across all platforms.
PWA Capabilities
| Feature | Support |
|---|---|
| Offline access | All modern browsers |
| Install prompt | Chrome, Edge, Samsung |
| Push notifications | All except iOS Safari |
| Background sync | Chrome, Edge |
| File handling | Chrome, Edge |
| Share target | Chrome, Edge, Safari |
Core Requirements
1. Web App Manifest
// public/manifest.json
{
"name": "My Progressive Web App",
"short_name": "MyPWA",
"description": "A progressive web application",
"start_url": "/",
"display": "standalone",
"background_color": "#ffffff",
"theme_color": "#3b82f6",
"orientation": "portrait-primary",
"scope": "/",
"icons": [
{
"src": "/icons/icon-72x72.png",
"sizes": "72x72",
"type": "image/png",
"purpose": "maskable any"
},
{
"src": "/icons/icon-96x96.png",
"sizes": "96x96",
"type": "image/png"
},
{
"src": "/icons/icon-128x128.png",
"sizes": "128x128",
"type": "image/png"
},
{
"src": "/icons/icon-192x192.png",
"sizes": "192x192",
"type": "image/png"
},
{
"src": "/icons/icon-512x512.png",
"sizes": "512x512",
"type": "image/png"
}
],
"screenshots": [
{
"src": "/screenshots/desktop.png",
"sizes": "1280x720",
"type": "image/png",
"form_factor": "wide"
},
{
"src": "/screenshots/mobile.png",
"sizes": "750x1334",
"type": "image/png",
"form_factor": "narrow"
}
],
"shortcuts": [
{
"name": "New Document",
"short_name": "New",
"url": "/new",
"icons": [{ "src": "/icons/new.png", "sizes": "96x96" }]
}
],
"share_target": {
"action": "/share",
"method": "POST",
"enctype": "multipart/form-data",
"params": {
"title": "title",
"text": "text",
"url": "url",
"files": [
{
"name": "files",
"accept": ["image/*", "text/*"]
}
]
}
}
}
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.
- 17d ago First seen · 567 lines · 35 tokens per session scan A ea41974c6489
pwa-development is a skill published in the GitHub repository travisjneuman/.claude (101 stars, last pushed today), licensed MIT. It adds 35 tokens to every session and 3,159 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-30.
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