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/zeropointrepo/youtube-skills/transcriptapinpx skills add ZeroPointRepo/youtube-skills --skill transcriptapigit clone --depth 1 https://github.com/ZeroPointRepo/youtube-skillsWrote 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/zeropointrepo/youtube-skills/transcriptapi)<a href="https://agentmods.dev/skills/zeropointrepo/youtube-skills/transcriptapi"><img src="https://agentmods.dev/badge/skills/zeropointrepo/youtube-skills/transcriptapi.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 | $0.00110 | $0.02866 |
| Opus 5 | $0.00055 | $0.01433 |
| Sonnet 5 | $0.00022 | $0.00573 |
| Haiku 4.5 | $0.00011 | $0.00287 |
Grade A, and why
transcriptapi scanned grade A 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 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -s "https://transcriptapi.com/api/v2/youtube/transcript\ How it starts
The opening of the file, as written. The whole thing — 294 lines — stays where its author put it; the contents beside it link to each section on GitHub.
TranscriptAPI
Full YouTube data toolkit via TranscriptAPI.com. Transcripts, search, channels, playlists — one API key.
Setup
If $TRANSCRIPT_API_KEY is not set, read references/auth-setup.md and follow the instructions there to get and store the key.
Required Headers
Every request needs two headers:
- Authorization:
Bearer $TRANSCRIPT_API_KEY - User-Agent: your agent's name and version if known (e.g.
HermesAgent/0.11.0,ClaudeCode/1.0). Version is optional — agent name alone is fine. Do not omit this header or send a bare default — Cloudflare will return a 403 (error code 1010) and block the request.
API Reference
Full OpenAPI spec: transcriptapi.com/openapi.json — consult this for the latest parameters and schemas.
Auth
All requests: -H "Authorization: Bearer $TRANSCRIPT_API_KEY"
Endpoints
Channel endpoints accept channel — an @handle, channel URL, or UC... ID. No need to resolve first. Playlist endpoints accept playlist — a playlist URL or ID.
GET /api/v2/youtube/transcript — 1 credit
curl -s "https://transcriptapi.com/api/v2/youtube/transcript\
?video_url=VIDEO_URL&format=text&include_timestamp=true&send_metadata=true" \
-H "Authorization: Bearer $TRANSCRIPT_API_KEY" \
-H "User-Agent: YourAgent/1.0"
| Param | Required | Default | Validation |
|---|---|---|---|
video_url |
yes | — | YouTube URL or 11-char video ID |
format |
no | json |
json or text |
include_timestamp |
no | true |
true or false |
send_metadata |
no | false |
true or false |
Accepts: https://youtube.com/watch?v=ID, https://youtu.be/ID, youtube.com/shorts/ID, or bare ID.
Response (format=json):
What ships with it
1 file 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 · 294 lines · 110 tokens per session scan A 5778c4b7165b
transcriptapi is a skill published in the GitHub repository ZeroPointRepo/youtube-skills (621 stars, last pushed 3d ago), licensed MIT. It adds 110 tokens to every session and 2,866 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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