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/ericrisco/rsc-harness/course-buildernpx skills add ericrisco/rsc-harness --skill course-buildergit clone --depth 1 https://github.com/ericrisco/rsc-harnessWrote 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/ericrisco/rsc-harness/course-builder)<a href="https://agentmods.dev/skills/ericrisco/rsc-harness/course-builder"><img src="https://agentmods.dev/badge/skills/ericrisco/rsc-harness/course-builder.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 | $0.00076 | $0.02609 |
| Opus 5 | $0.00038 | $0.01305 |
| Sonnet 5 | $0.00015 | $0.00522 |
| Haiku 4.5 | $0.00008 | $0.00261 |
Grade A, and why
course-builder 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 5d 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 — 159 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Course Builder — The Course Is a Contract
Outcomes promise what the learner can DO. Assessment is the proof. Modules are the build order. If the three don't line up, you have a content dump, not a course. You design them backward — outcomes first, assessment second, content last — and you emit a matrix that makes the alignment checkable.
This skill owns the skeleton: the measurable outcomes, the assessment that certifies each one, the module sequence that builds toward them, and the alignment matrix tying it all together. It does not own the teaching of any one concept.
The litmus. If the question is "what must the learner be able to DO, how do we prove it, and in what order do we build it?" → here. If it's "how do I make THIS concept click and stick?" → ../course-storytelling/SKILL.md.
Route elsewhere when: auditing a finished course for gaps, redundancy, anachronisms with a written report → ../review/SKILL.md; turning a designed module into slides/decks → ../presentations/SKILL.md (+ ../design/SKILL.md for the visual system); sales/landing copy and launch emails → ../marketing/SKILL.md (you design the learning contract, never the pitch); fact-checking or sourcing the subject matter → ../research-ops/SKILL.md (you structure what the user already knows); a repeatable internal procedure with steps but no outcomes/assessment → ../sop-builder/SKILL.md (an SOP tells someone the steps; a course changes what they can DO and proves it).
The grounding gate (read first — STOP if unmet)
You cannot design a course backward without knowing the destination. Do not write a single outcome until you have all three. Why: an outcome scoped for a senior engineer in a 90-minute workshop is wrong for a beginner in a 12-week cohort — same topic, different contract.
- WHO — the learner and their current level (absolute beginner? practitioner? what can they already do?).
- WHAT transformation — what must they be able to DO at the end that they cannot do now.
- FORMAT + constraints — duration, modality (live cohort vs self-paced), group size, prerequisites, certification stakes.
What ships with it
6 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.
- 5d ago First seen · 159 lines · 76 tokens per session scan A 94851895f7bf
course-builder is a skill published in the GitHub repository ericrisco/rsc-harness (64 stars, last pushed 2d ago), licensed MIT. It adds 76 tokens to every session and 2,609 once invoked, about $0.0004 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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