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/pageel/para-workspace/sysdesignnpx skills add pageel/para-workspace --skill sysdesigngit clone --depth 1 https://github.com/pageel/para-workspaceWrote 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/pageel/para-workspace/sysdesign)<a href="https://agentmods.dev/skills/pageel/para-workspace/sysdesign"><img src="https://agentmods.dev/badge/skills/pageel/para-workspace/sysdesign.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 | $0.00019 | $0.00902 |
| Opus 5 | $0.00010 | $0.00451 |
| Sonnet 5 | $0.00004 | $0.00180 |
| Haiku 4.5 | $0.00002 | $0.00090 |
Grade A, and why
System Design Router 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
17 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.
- references/architecture-patterns/astro-7-fullstack.md 14 KB
- references/architecture-patterns/astro-static.md 568 B
- references/architecture-patterns/astro-website.md 8.6 KB
- references/architecture-patterns/cloudflare-workers-d1.md 2.6 KB
- references/architecture-patterns/cqrs-read-write-separation.md 2.1 KB
- references/architecture-patterns/event-driven-microservices.md 2.7 KB
- references/architecture-patterns/express-mongodb-docker.md 2.7 KB
- references/architecture-patterns/fintech-payment-ledger.md 3.3 KB
- references/architecture-patterns/multi-tenant-saas.md 4.3 KB
- references/architecture-patterns/nextjs-supabase-postgres.md 3.4 KB
- references/architecture-patterns/python-fastapi-postgres.md 3.9 KB
- references/architecture-patterns/react-native-expo.md 3.6 KB
- references/architecture-patterns/spatial-geohashing-search.md 3.1 KB
- references/templates/adr-registry.md 1.0 KB
- references/templates/adr.md 3.4 KB
- references/templates/sysdesign-report.md 1.4 KB
- references/templates/sysdesign.md 11 KB
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 · 50 lines · 19 tokens per session scan A 87c9554ca00e
System Design Router is a skill published in the GitHub repository pageel/para-workspace (49 stars, last pushed 20d ago), with no licence file. It adds 19 tokens to every session and 902 once invoked, about $0.0001 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.
Other skills, from other repositories
backend-engineer
Supabase integration specialist. Handles database schema, authentication, Row Level Security (RLS), real-time subscriptions, and storage. Connects existing UI to real backend. Only called AFTER UI exists with mock data. Triggers: connect database, connect Supabase, add auth, make login, backend integration, real data…
dev-engineer
Adds logic, state management, TypeScript types, and CRUD operations to UI. Works AFTER ui-first-builder creates the interface. Implements Zustand stores, form handling with React Hook Form + Zod, and prepares for backend connection. Triggers: add logic, add functionality, make it work, state management, form…
platform-specialist
Doc-driven platform integration expert. Converts a web app to LINE MINI App (LIFF SDK), PWA (Next.js 16), and Capacitor (iOS/Android). Expo & Tauri are secondary/legacy. ปรัชญาหลัก: ดึง docs จริงล่าสุดก่อนเขียนโค้ดเสมอ — ไม่ freeze snippet ที่จะ rot. Triggers: "LINE MINI App", "LIFF", "LINE OA", "convert to app"…
premium-experience
Premium app generation that creates WOW-factor experiences. Multi-page apps with smooth animations, zero TypeScript errors, and production-ready quality. Lovable-style experience: one prompt, complete app, instant delight. MUST be used alongside vibe-orchestrator for new projects.
smart-routing
Intelligent request routing for /toh command. Analyzes user intent, assesses confidence, surveys the runtime (2-step, per orchestration-protocol), and routes to the appropriate agent(s). Memory-first approach ensures context awareness. Triggers: /toh command, natural language requests, ambiguous inputs.
test-engineer
Automated E2E testing with Playwright including the auto-fix loop — generate test cases from the UI, run them, fix failures and re-run until passing, then produce a human-readable report. Test until it passes, not just test and report. Drives /toh-test; use whenever tests must be written, run, or made green.