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 agentmods add skills/rand/cc-polymath/discover-frontendnpx skills add rand/cc-polymath --skill discover-frontendgit clone --depth 1 https://github.com/rand/cc-polymathWrote 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/rand/cc-polymath/discover-frontend)<a href="https://agentmods.dev/skills/rand/cc-polymath/discover-frontend"><img src="https://agentmods.dev/badge/skills/rand/cc-polymath/discover-frontend.svg" alt="Measured on agentmods" 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 | $0.00044 | $0.02177 |
| Opus 5 | $0.00022 | $0.01089 |
| Sonnet 5 | $0.00009 | $0.00435 |
| Haiku 4.5 | $0.00004 | $0.00218 |
Grade A, and why
discover-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 4d 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 — 335 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Frontend Skills Discovery
Provides automatic access to comprehensive frontend development skills.
When This Skill Activates
This skill auto-activates when you're working with:
- React component development
- Next.js applications and App Router
- State management (Context, Zustand, Redux)
- Data fetching (SWR, React Query, Server Actions)
- Form handling and validation
- Web accessibility (WCAG, ARIA)
- Frontend performance optimization
- SEO and metadata
- UI/UX design implementation
- terminal user interfaces
- TUI
- Bubble Tea
- Ratatui
- terminal UI
- text-based interfaces
- ncurses
Available Skills
Quick Reference
The Frontend category contains 16 skills across 2 subcategories (+ elegant-design):
Frontend (11 skills):
- react-component-patterns - Component design, composition, hooks, performance
- nextjs-app-router - Next.js 14+ App Router, Server Components, routing
- react-state-management - Context, Zustand, Redux Toolkit patterns
- react-data-fetching - SWR, React Query, Server Actions, data patterns
- react-form-handling - React Hook Form, Zod validation, form patterns
- web-accessibility - WCAG 2.1 AA compliance, ARIA, keyboard navigation
- frontend-performance - Bundle optimization, Core Web Vitals, code splitting
- nextjs-seo - SEO with Next.js, metadata API, structured data
- web-workers - Web Workers API, message passing, offloading computation
- browser-concurrency - Service Workers, SharedWorkers, Worklets, PWAs
- elegant-design/SKILL.md - World-class accessible interfaces (separate Agent Skill)
TUI (5 skills): See ../tui/INDEX.md
Load Full Category Details
Read ../frontend/INDEX.md Read ../tui/INDEX.md
Common Workflows
New Next.js Application
Sequence: App Router → Components → Data Fetching
Read ../frontend/nextjs-app-router.md # Setup routing, layouts Read ../frontend/react-component-patterns.md # Build components Read ../frontend/react-data-fetching.md # Fetch data
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.
- 4d ago First seen · 335 lines · 44 tokens per session scan A 902340f7e5b5
discover-frontend is a skill published in the GitHub repository rand/cc-polymath (136 stars, last pushed 6mo ago), licensed MIT. It adds 44 tokens to every session and 2,177 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 2026-08-30.
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