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 kousen/claude-code-training --skill onboardgit clone --depth 1 https://github.com/kousen/claude-code-trainingWrote 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/kousen/claude-code-training/onboard)<a href="https://agentmods.dev/skills/kousen/claude-code-training/onboard"><img src="https://agentmods.dev/badge/skills/kousen/claude-code-training/onboard/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/kousen/claude-code-training/onboard"><img src="https://agentmods.dev/badge/skills/kousen/claude-code-training/onboard.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Excessive Agency · line 5 Skill selects an external model or provider that may use a different account or billing plan than the operator expects. Undisclosed model switches can cause unexpected cost or quota consumption.Fix: Remove the model/provider override or disclose it prominently and require explicit operator approval before invoking an external coding CLI or billed model.
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 | $0.00036 | $0.00314 |
| Opus 5.5 | $0.00014 | $0.00126 |
| Sonnet 5.5 | $0.00007 | $0.00063 |
| Haiku 4.5 | $0.00004 | $0.00031 |
Grade A, and why
onboard 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.
What it actually says
Codebase Onboarding Generator
This skill runs in a forked subagent so the broad discovery work doesn't pollute the parent conversation's context. The parent receives a concise summary; the full analysis lives in the generated files.
Procedure
-
Analyze project structure
- Top-level layout, build tooling, language and framework versions
- Key entry points, primary modules, integration points
- Notable conventions (testing, error handling, configuration, naming)
-
Write
CODEBASE.md- Architecture overview (high-level + per-module)
- Setup and run instructions
- Key patterns to know — what's idiomatic in this repo
- Gotchas — things that surprised you while exploring
- Where to start reading (5-10 file pointers)
-
Generate
PRESENTATION.mdin Slidev format- 12-20 slides covering the same ground
- Use the same conventions as
slides.mdif one exists in the repo
-
Note any TODOs you found that look like onboarding-relevant footguns.
Use a professional, practical tone. Skip marketing fluff — new team members need to do work, not be sold on the project.
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 · 34 lines · 36 tokens per session scan A 2b1e0dffb1e5
onboard is a skill published in the GitHub repository kousen/claude-code-training (339 stars, last pushed 7d ago), licensed MIT. It adds 36 tokens to every session and 314 once invoked, about $0.0001 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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eli5
Explain research, papers, or technical ideas in plain English with minimal jargon, concrete analogies, and clear takeaways. Use when the user says "ELI5 this", asks for a simple explanation of a paper or research result, wants jargon removed, or asks what something technically dense actually means.
deck-course-module
A course or workshop slide template with persistent learning goals, teaching pages, multiple-choice self-tests, and a wrap-up.