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 bovinphang/frontend-craft --skill fec-pwa-implementationgit clone --depth 1 https://github.com/bovinphang/frontend-craftWrote 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/bovinphang/frontend-craft/fec-pwa-implementation)<a href="https://agentmods.dev/skills/bovinphang/frontend-craft/fec-pwa-implementation"><img src="https://agentmods.dev/badge/skills/bovinphang/frontend-craft/fec-pwa-implementation/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/bovinphang/frontend-craft/fec-pwa-implementation"><img src="https://agentmods.dev/badge/skills/bovinphang/frontend-craft/fec-pwa-implementation.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 | $0.00087 | $0.00561 |
| Opus 5.5 | $0.00035 | $0.00224 |
| Sonnet 5.5 | $0.00017 | $0.00112 |
| Haiku 4.5 | $0.00009 | $0.00056 |
Grade A, and why
fec-pwa-implementation 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 1mo 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.
What it actually says
PWA 实现
用途
让 Web 应用具备可安装、离线兜底和可控更新能力。
流程
- 确认 PWA 是否值得做：面向移动端/桌面安装、弱网离线、重复访问场景时优先；纯内部后台、强实时流媒体或只需要普通缓存时不要强行 PWA。
- 先补齐 manifest、图标、主题色和 HTML 引用；图标至少覆盖 192/512，Android 需 maskable，iOS 需 apple touch icon。
- 注册 Service Worker，并设计更新提示；不要静默
skipWaiting()后强刷用户页面。 - 用 Workbox 或框架插件管理 precache/runtime cache；登录、支付、权限变更等敏感请求必须走网络。
- 提供 offline fallback 页面和安装提示 UI，并验证首次加载、离线访问、更新激活、卸载重装。
详细参考
- 需要 manifest 字段、HTML 引用、图标要求、截图和 iOS 注意事项时，加载 references/manifest-and-icons.md。
- 需要 Service Worker 注册、Workbox 策略、Vite 集成、离线兜底和更新流程时，加载 references/service-worker-workbox.md。
约束
- Service Worker 仅在 HTTPS 下工作（localhost 除外）。
- 缓存策略必须区分页面、静态资源、API 与敏感操作；不要把登录、支付、权限接口缓存起来。
- Service Worker 更新有生命周期延迟；用户可见刷新提示优先于强制刷新。
- iOS PWA 能力弱于 Android，安装、推送和生命周期都要单独验证。
- 缓存有配额和逐出机制，必须设置 max entries / max age。
预期输出
产出可安装的 Web 应用、离线 fallback、可见更新提示和明确缓存策略。验证 Lighthouse PWA、DevTools Application 面板、离线模式、更新发布和移动端安装流程。
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 1mo ago First seen · 36 lines · 87 tokens per session scan A 489c34b48f39
fec-pwa-implementation is a skill published in the GitHub repository bovinphang/frontend-craft (22 stars, last pushed 29d ago), licensed MIT. It adds 87 tokens to every session and 561 once invoked, about $0.0003 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 2026-08-30.
Other skills, from other repositories
adhd
Divergent ideation across model families — the same brainstorm, but each cognitive frame is handed to a different model (Claude sub-agent, OpenAI Codex, a cheap third via OpenCode) so the ideas diverge by frame and by model priors at once. Use for open design questions, architecture and API shape, naming, schema…
brand-design
Brand-aware design system generator that acts as Head of Brand. Translates abstract brand language into a mathematically-validated, implementation-ready design system, writes creative-brief.md as the source of truth for all UI/UX in a project, and optionally compiles it to framework tokens (Tailwind v4 @theme, v3…
validate-api
Run the project's Hurl scenarios with an OIDC access token passed as a secret variable.
validate-mobile
Run a Maestro flow on an explicitly selected iOS or Android device and report behavioral evidence.
dotnet-backend-expert
This skill should be used when the user is writing, reviewing, debugging, or architecting pure .NET backend code for Kestrel-hosted services. It provides expert critique for REST endpoints, SignalR hubs, TypeScript/React client integration shape, pragmatic Rust interop, application services, AppHost-aware project…
python-backend-expert
This skill should be used when the user is writing, reviewing, debugging, or architecting Python backend code using Litestar or FastAPI with SQLAlchemy or Advanced Alchemy. Provides expert critique covering SOLID principles, hexagonal architecture, repository/service patterns, dependency injection, async correctness…