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 cyyeh/skills-playground --skill learning-platformgit clone --depth 1 https://github.com/cyyeh/skills-playgroundWrote 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/cyyeh/skills-playground/learning-platform)<a href="https://agentmods.dev/skills/cyyeh/skills-playground/learning-platform"><img src="https://agentmods.dev/badge/skills/cyyeh/skills-playground/learning-platform/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/cyyeh/skills-playground/learning-platform"><img src="https://agentmods.dev/badge/skills/cyyeh/skills-playground/learning-platform.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 | $0.00150 | $0.02468 |
| Opus 5.5 | $0.00060 | $0.00987 |
| Sonnet 5.5 | $0.00030 | $0.00494 |
| Haiku 4.5 | $0.00015 | $0.00247 |
Grade A, and why
learning-platform 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.
How it starts
The opening of the file, as written. The whole thing — 218 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Learning Platform Generator
Create structured, interactive learning platforms for any field — modeled after the business-101 architecture: a single-page app (SPA) that dynamically renders markdown content and interactive HTML tools, with no build step required.
How the Platform Works
The platform is a static site powered by a single index.html SPA. The README.md acts as the database — the SPA parses it at runtime to discover all topics and their content files. Each topic gets a folder under src/ with exactly 6 content files covering different learning angles. The only external dependency is marked.js for markdown rendering.
<cwd>/
└── platform-name/ # New directory created inside CWD
├── index.html # SPA shell (from template)
├── README.md # Topic registry — the SPA parses this
├── Makefile # Local preview (make serve)
├── .nojekyll # For GitHub Pages
└── src/
├── learning-roadmap.md # Suggested learning order
├── glossary.md # Key terms table
├── <topic-folder>/ # One folder per topic
│ ├── <topic>_analysis.md # In-depth professional analysis
│ ├── <topic>_guide.md # Beginner-friendly plain language guide
│ ├── <topic>_cases.md # Real-world case studies
│ ├── <topic>_interactive.html # Self-contained interactive HTML tool
│ ├── <topic>_quiz.md # Practice questions & self-assessment
│ └── <topic>_resources.md # Further learning resources
└── cross-topic/ # Cross-topic integration analyses
└── <case-name>.md
The SPA provides: hash-based routing, tabbed content viewer per topic, full-text search across all markdown, glossary with search integration, responsive card grid, and iframe embedding for interactive HTML tools.
Two Modes
Auto-detect: If no learning platform directory (containing index.html + README.md with topic structure) exists in the current working directory → Create mode. If one exists and the user's request targets it → Expand mode.
What ships with it
3 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 · 218 lines · 150 tokens per session scan A 4b7e47b1e172
learning-platform is a skill published in the GitHub repository cyyeh/skills-playground (2 stars, last pushed 6mo ago), licensed Apache-2.0. It adds 150 tokens to every session and 2,468 once invoked, about $0.0006 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 2026-08-31.
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