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/melodic-software/claude-code-plugins/course-digestnpx skills add melodic-software/claude-code-plugins --skill course-digestgit clone --depth 1 https://github.com/melodic-software/claude-code-pluginsWrote 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/melodic-software/claude-code-plugins/course-digest)<a href="https://agentmods.dev/skills/melodic-software/claude-code-plugins/course-digest"><img src="https://agentmods.dev/badge/skills/melodic-software/claude-code-plugins/course-digest.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 5.1 | $0.00173 | $0.04409 |
| Opus 5 | $0.00086 | $0.02204 |
| Sonnet 5 | $0.00035 | $0.00882 |
| Haiku 4.5 | $0.00017 | $0.00441 |
Grade B, and why
course-digest scanned grade B with 1 finding 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 yesterday.
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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
3. **ffmpeg**, required for video frame extraction (scene detection, interval capture). Check: `ffmpeg -version`. Install: `winget install Gyan.FFmpeg` (Windows), `brew install ffmpeg` (macOS), `sudo apt install ffmpeg` How it starts
The opening of the file, as written. The whole thing — 235 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Pre-computed context
course-extraction deps: !node -e "const fs=require('fs'),path=require('path'),p=process.env.CLAUDE_PLUGIN_DATA;process.stdout.write(p&&fs.existsSync(path.join(p,'node_modules','@melodic','video-digestion'))?'installed':'MISSING - run setup-deps.mjs (see Prerequisites)')"
Playwright Chromium: !node -e "const fs=require('fs'),path=require('path');const b=process.env.PLAYWRIGHT_BROWSERS_PATH||(process.env.CLAUDE_PLUGIN_DATA&&path.join(process.env.CLAUDE_PLUGIN_DATA,'ms-playwright'));const ok=b&&fs.existsSync(b)&&fs.readdirSync(b).some(n=>n.startsWith('chromium'));process.stdout.write(ok?'installed':'MISSING - run setup-deps.mjs (see Prerequisites)')"
ffmpeg: !command -v ffmpeg >/dev/null 2>&1 && { ffmpeg -version 2>/dev/null | head -1; :; } || echo "MISSING — install ffmpeg (see Prerequisites)"
ImageMagick: !command -v magick >/dev/null 2>&1 && { magick -version 2>/dev/null | head -1; :; } || echo "MISSING — install ImageMagick 7 (see Prerequisites)"
Course Digest
Transform online video courses into structured knowledge and actionable repo recommendations, without watching a single video.
How it works
Uses browser automation (claude-in-chrome) to navigate course platforms, extract transcripts, capture screenshots of code/slides, and collect downloadable resources. Synthesizes raw content into analysis focused on what applies to the current repository.
Where this skill says "deeper research," use whatever external-research capability your project provides. Repo conventions override course claims. Surface convention conflicts explicitly; never silently adopt a course's shortcut over team rules.
Emit checklist
For any course digest run (multi-phase content acquisition + distillation + repo-applicability analysis), copy templates/checklist.md into .work/<slug>/course-digest-checklist.md. Tick each phase as completed.
This skill's .work/ root is formally carved out of the marketplace topic-docs convention (https://raw.githubusercontent.com/melodic-software/claude-code-plugins/main/docs/conventions/topic-docs/README.md): the work root resolves through the knowledge plugin's own library_dir seam, not the concern file's memory_dir; slug conformance is form-only (kebab-case [a-z0-9-], ≤ 40 chars, Windows-reserved base names take an -x suffix); and nested <epic>/<slug>/ sub-slices are sanctioned. The root still self-ignores (a .gitignore containing *) and is never committed.
What ships with it
56 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.
- context/multimodal-evaluation.md 6.1 KB
- context/storage-schema.md 8.3 KB
- context/workflow.md 17 KB
- evals/evals.json 6.4 KB
- extraction/.npmrc 19 B
- extraction/adapters/adapter-contract.js 3.5 KB runs code
- extraction/adapters/adapter-contract.test.js 1.6 KB runs code
- extraction/adapters/auth-session.js 265 B runs code
- extraction/adapters/dometrain.js 12 KB runs code
- extraction/adapters/dometrain.test.js 1.6 KB runs code
- extraction/adapters/teachable.js 12 KB runs code
- extraction/adapters/teachable.test.js 3.9 KB runs code
- extraction/analyze-code-repo.js 6.4 KB runs code
- extraction/build-course-json.js 7.8 KB runs code
- extraction/classify-frames.js 6.4 KB runs code
- extraction/discover-resources.js 8.2 KB runs code
- extraction/download-resources.js 7.1 KB runs code
- extraction/extract-course-run.js 7.7 KB runs code
- extraction/extract-course.js 10 KB runs code
- extraction/generate-manifests.js 6.6 KB runs code
- extraction/lib/auth-store.js 1.4 KB runs code
- extraction/lib/auth/clerk.js 1.0 KB runs code
- extraction/lib/auth/clerk.test.js 920 B runs code
- extraction/lib/auth/manual-login.js 2.3 KB runs code
- extraction/lib/auth/teachable-sso.js 923 B runs code
- extraction/lib/auth/teachable-sso.test.js 924 B runs code
- extraction/lib/auth/test-helpers.js 637 B runs code
- extraction/lib/browser.js 3.0 KB runs code
- extraction/lib/config.js 1.6 KB runs code
- extraction/lib/config.test.js 1.8 KB runs code
- extraction/lib/meta-tags.js 858 B runs code
- extraction/lib/players/hotmart.js 18 KB runs code
- extraction/lib/players/hotmart.test.js 3.8 KB runs code
- extraction/lib/players/mux.js 1.1 KB runs code
- extraction/lib/players/mux.test.js 1.5 KB runs code
- extraction/lib/playwright-selectors.js 1.2 KB runs code
- extraction/lib/validators.js 8.9 KB runs code
- extraction/lib/validators.test.js 5.7 KB runs code
- extraction/package-lock.json 54 KB
- extraction/package.json 977 B
- extraction/register-hook.mjs 322 B runs code
- extraction/resolve-hook.mjs 1.5 KB runs code
- extraction/run.mjs 2.2 KB runs code
- extraction/setup-deps.mjs 5.0 KB runs code
- extraction/tsconfig.json 458 B
- extraction/utils.js 4.4 KB runs code
- extraction/utils.test.js 5.4 KB runs code
- extraction/validate-extraction.js 3.6 KB runs code
- extraction/vitest.config.ts 185 B runs code
- reference/adapters/discovery-checklist.md 18 KB
- reference/adapters/dometrain.md 10 KB
- reference/adapters/teachable.md 7.8 KB
- reference/analysis-template.md 3.0 KB
- reference/screenshot-strategy.md 8.9 KB
- scripts/run-tests.sh 495 B runs code
- templates/checklist.md 1.2 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.
- yesterday First seen · 235 lines · 173 tokens per session scan B 6e024eca245d
course-digest is a skill published in the GitHub repository melodic-software/claude-code-plugins (15 stars, last pushed today), licensed MIT. It adds 173 tokens to every session and 4,409 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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