Borrowing it
Nothing to install: this file belongs to compozy/kb. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/compozy/kb/main/.agents/skills/kb-yt-channel/SKILL.mdgit clone --depth 1 https://github.com/compozy/kbWrote 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/compozy/kb/kb-yt-channel)<a href="https://agentmods.dev/skills/compozy/kb/kb-yt-channel"><img src="https://agentmods.dev/badge/skills/compozy/kb/kb-yt-channel.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00073 | $0.01567 |
| Opus 5 | $0.00036 | $0.00783 |
| Sonnet 5 | $0.00015 | $0.00313 |
| Haiku 4.5 | $0.00007 | $0.00157 |
Grade A, and why
kb-yt-channel 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 8d 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 — 96 lines — stays where its author put it; the contents beside it link to each section on GitHub.
KB YouTube Channel
This skill is a thin wrapper around the native kb ingest channel command. kb
owns the ingest mechanics — channel resolution, video enumeration,
resume/dedup, bounded concurrency, throttling, adaptive backoff, retries,
native-language captions, and STT. The skill's scripts/ingest-channel.py owns
the KB-side organization: scaffolding the topic under yt-channels/,
maintaining category docs, patching CLAUDE.md, building wiki indexes, writing the
run report, and validating the topic.
Required Inputs
- Channel or playlist URL, such as https://www.youtube.com/@aiDotEngineer.
- Topic slug, such as ai-dot-engineer.
- Topic title and domain.
- Video selection: either --limit N for the newest uploads or --all for the full uploads list.
- Transcript policy: --transcribe captions, auto, or stt.
Caption language defaults to the original-language track (--sub-langs orig)
and is handled natively by kb ingest channel. Pass a comma list like
--sub-langs pt,en only to override it.
Rate limits and large channels (read before --all or --limit > ~10)
YouTube throttles caption downloads per IP (HTTP 429). kb ingest channel
already paces itself with bounded concurrency, inter-request throttling, and
adaptive exponential backoff (configured via [youtube].bulk_concurrency,
[youtube].bulk_throttle, [youtube].bulk_retries, [youtube].bulk_backoff_max).
For anything beyond a handful of videos, also give kb better network identity
via its config/env — not via this script:
- Cookies — set
YOUTUBE_COOKIES_FILE(or[youtube].cookies_file) to a logged-in YouTube session. Prefer a secondary Google account. - Impersonation — install curl_cffi into the yt-dlp environment so it can present a browser TLS fingerprint. Homebrew yt-dlp:
/opt/homebrew/opt/yt-dlp/libexec/bin/python -m pip install curl_cffi. - Residential proxy — set
YOUTUBE_PROXYto a rotating residential proxy (datacenter IPs are blocked). Pin to one country to avoid account-geo flags. - Pacing — raise
--throttle(e.g.5s) and/or keep--concurrencylow (1) on a bare IP.--concurrency N(>1) is only safe behind a rotating proxy; respect the proxy plan's concurrent-connection cap.
What ships with it
4 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.
- 8d ago First seen · 96 lines · 73 tokens per session scan A 22574f388a5f
kb-yt-channel is a skill published in the GitHub repository compozy/kb (108 stars, last pushed 18d ago), licensed MIT. It adds 73 tokens to every session and 1,567 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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