buaa-classroom-summarizer

buaa-classroom-summarizer is a skill for Codex from 1xiaoooo/buaa-course-skills. It costs 69 tokens per session (3,287 once invoked), scanned A, original, MIT.

A tool and workflow for extracting replay materials from BUAA classroom pages. BUAA is Beijing University of Aeronautics and Astronautics, and replay materials can include lesson metadata, transcripts, and presentation files.

In plain words
What is it for?
Use it with classroom replay or course-detail URLs to enumerate lessons, extract transcripts and optional presentation files, diagnose replay access, and prepare notes.
Why use it?
It collects course recordings and supporting files from pages that require an existing Chromium login, so the agent can work from organized local artifacts.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: mentions subagents; mentions Codex.

Good fit Use it with classroom replay or course-detail URLs to enumerate lessons, extract transcripts and optional presentation files, diagnose replay access, and prepare notes.

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Install with agentmods
npx agentmods add skills/1xiaoooo/buaa-course-skills/buaa-classroom-summarizer
Install

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.

Any agent
npx skills add 1xiaoooo/buaa-course-skills --skill buaa-classroom-summarizer
Clone the repo
git clone --depth 1 https://github.com/1xiaoooo/buaa-course-skills

Made for: Codex.

Wrote 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.

agentmods badge for buaa-classroom-summarizer

README.md
[![agentmods](https://agentmods.dev/badge/skills/1xiaoooo/buaa-course-skills/buaa-classroom-summarizer/github.svg)](https://agentmods.dev/skills/1xiaoooo/buaa-course-skills/buaa-classroom-summarizer)
Your own site
<a href="https://agentmods.dev/skills/1xiaoooo/buaa-course-skills/buaa-classroom-summarizer"><img src="https://agentmods.dev/badge/skills/1xiaoooo/buaa-course-skills/buaa-classroom-summarizer/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.

agentmods 80×15 button for buaa-classroom-summarizer

Your own site · 80×15
<a href="https://agentmods.dev/skills/1xiaoooo/buaa-course-skills/buaa-classroom-summarizer"><img src="https://agentmods.dev/badge/skills/1xiaoooo/buaa-course-skills/buaa-classroom-summarizer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 69 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,287 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00069 $0.03287
Opus 5 $0.00034 $0.01643
Sonnet 5 $0.00014 $0.00657
Haiku 4.5 $0.00007 $0.00329

Measured 11d ago against content hash 8082175fdd54, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

buaa-classroom-summarizer 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 11d ago.

The scan reads SKILL.md. This mod also ships 7 executable files (scripts/collect_buaa_course_replays.py, scripts/extract_buaa_classroom.py, scripts/extract_ppt_outline.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/buaa-classroom-summarizer/SKILL.md · 247 lines

How it starts

The opening of the file, as written. The whole thing — 247 lines — stays where its author put it; the contents beside it link to each section on GitHub.

BUAA Classroom Summarizer

Use this skill for:

  • one classroom.msa.buaa.edu.cn/livingroom replay URL
  • one classroom.msa.buaa.edu.cn/coursedetail course page

Assume commands run from this skill root. Otherwise use the absolute path to scripts/.

Core Boundary

  • Let scripts handle authentication, extraction, replay diagnosis, caching, and artifact writes.
  • Let the agent handle course alignment, concept confirmation, terminology correction, and final prose reconstruction.
  • Treat deterministic note output as a seed unless semantic rebuild is explicitly completed.

Main Commands

Single replay extraction:

python scripts\extract_buaa_classroom.py "<livingroom-url>" --output-dir "<output-dir>"

Whole-course replay enumeration or extraction:

python scripts\collect_buaa_course_replays.py "<coursedetail-url>" --output-dir "<output-dir>"
python scripts\collect_buaa_course_replays.py "<coursedetail-url>" --output-dir "<output-dir>" --extract-existing --skip-existing

Whole-course commands are extraction and inventory commands, not permission to generate final notes for every available lesson. For a coursedetail URL, enumerate or extract artifacts first, then ask the user which lesson to semantically rebuild next unless the user explicitly requests a batch finalization workflow.

Course Identity Rule

For a coursedetail URL, resolve the course identity before choosing a course folder or reusing vault context:

  • First extract the strongest available course title from classroom/SPoC metadata, saved course detail files, replay metadata, or stable replay titles.
  • Treat the normalized course title as the canonical course identity. If the title matches an existing course, it is the same course even when course_id, lecturer, class time, classroom, or sub_id ranges differ.
  • If no reliable title is available, use course_id only as a provisional identity such as course-136278; do not merge into an existing titled course by teacher, schedule, lesson dates, old extraction directories, or nearby vault content.
  • Preserve course_id and source URLs as source metadata, but do not use them to split courses that have the same confirmed title.
  • If title extraction is ambiguous and the target vault already has plausible course folders, pause for user confirmation before writing formal notes or updating trackers.

Read the full file on GitHub · 247 lines

Changes

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.

  1. 11d ago First seen · 247 lines · 69 tokens per session scan A 8082175fdd54

Subscribe to this mod's changes

buaa-classroom-summarizer is a skill published in the GitHub repository 1xiaoooo/buaa-course-skills (50 stars, last pushed 4mo ago), licensed MIT. It adds 69 tokens to every session and 3,287 once invoked, about $0.0003 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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