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 Samin12/claude-course --skill skool-cligit clone --depth 1 https://github.com/Samin12/claude-courseWrote 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/samin12/claude-course/skool-cli)<a href="https://agentmods.dev/skills/samin12/claude-course/skool-cli"><img src="https://agentmods.dev/badge/skills/samin12/claude-course/skool-cli/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/samin12/claude-course/skool-cli"><img src="https://agentmods.dev/badge/skills/samin12/claude-course/skool-cli.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 | $0.00114 | $0.01439 |
| Opus 5.5 | $0.00046 | $0.00576 |
| Sonnet 5.5 | $0.00023 | $0.00288 |
| Haiku 4.5 | $0.00011 | $0.00144 |
Grade A, and why
skool-cli 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 — 113 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Skool CLI
You're about to programmatically update a Skool classroom via its internal API (reverse-engineered — Skool has no public API). The CLI runs inside a logged-in Skool browser tab and uses the user's session cookies for auth, so you don't need tokens or credentials.
Source repo: https://github.com/Samin12/skool-cli
Pre-flight
- Chrome MCP required. This skill drives a logged-in Skool tab via
mcp__Claude_in_Chrome__javascript_tool. Confirm Chrome MCP tools are available. If not, ask the user to connect the Chrome extension. - User must be logged into Skool in Chrome. Check tabs context — you need a tab at
skool.com/<group>/classroom/<courseId>. - Navigate to the classroom root before injecting the CLI so
window.__NEXT_DATA__has the tree loaded:https://www.skool.com/<group-slug>/classroom/<course-slug>
Inject the CLI
Paste the full CLI source into a javascript_exec call against the Skool tab. The source is kept in this skill at skool.js (see below) — copy-paste the whole IIFE.
After injection, window.skool is available. Verify:
window.skool.flattenTree().units.length
Core operations
Rename a folder or page
await skool.update('<unit-id>', { title: '📂 Day 01 — New Title' })
Title limit: 50 UTF-16 code units. 📂 and 📝 emojis each count as 2. A plain " — " (em-dash) counts as 1.
Update a page's content
await skool.updatePageContent('<page-id>', markdownString, optionalNewTitle)
The markdown is converted to Tiptap v2 format. Supports: paragraphs (blank-line-separated), **bold**, `inline code`. Does NOT render markdown headers (## will show literally) — use **Header** paragraphs instead.
Create a folder (at course root)
await skool.createFolder('📂 New folder')
// returns the new unit object with .id
Create a page (inside a folder)
await skool.createPage('<parent-folder-id>', '📝 Page title', markdown)
Delete
await skool.remove('<unit-id>')
What ships with it
1 file 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 · 113 lines · 114 tokens per session scan A 1b504e7f3b31
skool-cli is a skill published in the GitHub repository Samin12/claude-course (25 stars, last pushed 6mo ago), licensed MIT. It adds 114 tokens to every session and 1,439 once invoked, about $0.0005 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.
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