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 sukirman1901/frontend-expert --skill engineering-vocabularygit clone --depth 1 https://github.com/sukirman1901/frontend-expertWrote 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/sukirman1901/frontend-expert/engineering-vocabulary)<a href="https://agentmods.dev/skills/sukirman1901/frontend-expert/engineering-vocabulary"><img src="https://agentmods.dev/badge/skills/sukirman1901/frontend-expert/engineering-vocabulary/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/sukirman1901/frontend-expert/engineering-vocabulary"><img src="https://agentmods.dev/badge/skills/sukirman1901/frontend-expert/engineering-vocabulary.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 | $0.00076 | $0.02127 |
| Opus 5 | $0.00038 | $0.01064 |
| Sonnet 5 | $0.00015 | $0.00425 |
| Haiku 4.5 | $0.00008 | $0.00213 |
Grade A, and why
engineering-vocabulary 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 10d 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.
How it starts
The opening of the file, as written. The whole thing — 151 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Engineering Vocabulary
Overview
Bridge the gap between casual engineering descriptions and precise technical terms. When a user describes a frontend pattern loosely, look it up here to pick the right implementation approach.
When to use
- User describes a pattern informally ("yang nge-cache itu", "biar gak nge-lag")
- You need the precise term to search docs or pick the right library
- Communicating architecture decisions clearly
When to skip
- User already uses the correct term
- Non-frontend (backend, DevOps, database) concepts
Lookup table
State Management
| Description (loose) | Term | Definition |
|---|---|---|
| Share data without passing through every component | Context / Provider pattern | React Context or equivalent for cross-tree state |
| Data cached so it doesn't fetch again | SWR / Stale-while-revalidate | Return cached data, revalidate in background |
| Store that any component can read | Global store (Zustand/Redux) | Centralized client state container |
| State in the URL (filters, tabs) | URL state / Search params | Shareable, bookmarkable state via URL |
| Pass data down without prop chains | State hoisting / Lifting state | Move state to nearest common ancestor |
| Optimistic update before server confirms | Optimistic UI / Optimistic mutation | Show expected result immediately, rollback on error |
| Undo/redo support | Command pattern / History stack | Stack of reversible actions |
| Form state that tracks dirty/touched | Form state management | Libraries like React Hook Form, Formik |
| Derived value computed from other state | Computed / Derived state / Selector | Value calculated from source state, memoized |
Data Fetching & Async
| Description (loose) | Term | Definition |
|---|---|---|
| Loading skeleton before data | Skeleton screen / Placeholder UI | Shimmer placeholders mimicking final layout |
| Retry on failure | Retry with backoff | Re-attempt failed requests with increasing delay |
| Cancel request when leaving page | Abort controller / Request cancellation | AbortController signal to cancel in-flight fetch |
| Load more as you scroll | Infinite scroll / Cursor pagination | Fetch next page when nearing scroll bottom |
| Fetch once, use everywhere | Query cache / React Query | Centralized async state with cache + revalidation |
| Pre-fetch data before user navigates | Prefetching / Preloading data | Anticipate next route, start fetching early |
| Debounce search input | Debounced input | Delay execution until user stops typing (~300ms) |
| Show stale data while loading new | Stale-while-revalidate (SWR) | Display cached result, refresh in background |
| Parallel requests instead of sequential | Promise.all / Parallel fetching | Fire independent requests simultaneously |
| Server sends updates without polling | WebSocket / Server-Sent Events | Real-time push from server to client |
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.
- 10d ago First seen · 151 lines · 76 tokens per session scan A b8be7583b0ac
engineering-vocabulary is a skill published in the GitHub repository sukirman1901/frontend-expert (10 stars, last pushed 7d ago), licensed MIT. It adds 76 tokens to every session and 2,127 once invoked, about $0.0004 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 2026-08-31.
Other skills, from other repositories
visual-ralph
Visual Ralph orchestration for frontend UI from generated references, static references, or live URL targets, using $ralph with built-in visual verdict and pixel-diff evidence until the implementation matches and leaves a reproducible design system.
debug-optimize-lcp
Guides debugging and optimizing Largest Contentful Paint (LCP) using Chrome DevTools MCP tools. Use this skill whenever the user asks about LCP performance, slow page loads, Core Web Vitals optimization, or wants to understand why their page's main content takes too long to appear. Also use when the user mentions…
repro-admin
Reproduce an EmDash admin UI bug. Attach a container, start the demo dev server, drive the admin with agent-browser using the dev-bypass session, and capture the reproduction as screenshots plus a replayable transcript.
create-site
Creates a new Power Pages code site (SPA) using React, Angular, Vue, or Astro. Guides through the full process from initial concept to deployed site: requirements discovery, scaffolding, component planning, design, implementation, validation, and deployment. Use when the user wants to create, build, or scaffold a new…
prototype-web
A clickable, high-fidelity web product prototype with navigation, a hero section, feature cards, steps, social proof, and optional pricing. It is designed to resemble a finished landing page while remaining a prototype.
menu-transitions-rtl
Animate react-horizontal-scrolling-menu scrolling and build right-to-left menus: noPolyfill defaults to true since v8, so transitionDuration (default 500), a custom-easing-function transitionBehavior, and per-call ScrollOptions { duration, boundary } on scrollToItem/scrollNext/scrollPrev are silently ignored unless…