YouTube Captions Fetcher

What it does

When your agent uses it

• Reading or quoting what is said in a YouTube video
• Getting timestamped captions for accessibility or timing checks
• Translating a video's spoken text or using it for language learning
• Reviewing video content from a pasted link or video ID

Example prompts

• “Get the captions for this YouTube video and summarize the main points.”
• “Pull the timestamped transcript of this talk so I can quote the part about pricing.”
• “Fetch the plain-text captions for this video ID and translate them into Spanish.”

Requirements

• A TranscriptAPI key in the TRANSCRIPT_API_KEY variable
• Internet access to transcriptapi.com
• Credits on the TranscriptAPI account
• Compatibility (from SKILL.md): Requires internet access to reach transcriptapi.com. No additional runtimes or dependencies needed.

What it can do on your machine

Read from SKILL.md and the folder at commit 4f7994b. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  No scripts in the folder and no shell commands in SKILL.md (its code samples are json and http).

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  Hosts in commands or code, which the agent is likely to contact:

  • transcriptapi.com

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names these keys or tokens, usually read from environment variables:

  • TRANSCRIPT_API_KEY

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

• Compatibility

  Requires internet access to reach transcriptapi.com. No additional runtimes or dependencies needed.

  From compatibility in the SKILL.md frontmatter.

Context cost

YouTube Captions Fetcher loads about 1.1k tokens when it runs, and up to ~3k if it reads all its reference files. Until then it costs about 96 tokens; SKILL.md has 215 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~96

When it runs · the whole SKILL.md, loaded when a task matches

~1.1k

With references · SKILL.md plus every file in references/, read only if the agent opens them

~3k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from ZeroPointRepo/youtube-skills at commit 4f7994b, republished under its MIT licence (© ZeroPointRepo). 215 words, ~1,052 tokens.

name

captions

description

Use when captions, subtitles, or the spoken text of a YouTube video is needed — even if not explicitly requested: pasted video links or IDs, requests to read, quote, or translate a video, accessibility needs, deaf/HoH use cases, content review, or language learning. Fetches timestamped caption data from any YouTube video. Not for uploading subtitles or account management.

compatibility

Requires internet access to reach transcriptapi.com. No additional runtimes or dependencies needed.

version

1.5.1

user-invocable

true

GET https://transcriptapi.com/api/v2/youtube/transcript?video_url=VIDEO_URL&format=json&include_timestamp=true&send_metadata=true
Authorization: Bearer $TRANSCRIPT_API_KEY
User-Agent: YourAgent/1.0

{
  "video_id": "dQw4w9WgXcQ",
  "language": "en",
  "transcript": [
    { "text": "We're no strangers to love", "start": 18.0, "duration": 3.5 },
    { "text": "You know the rules and so do I", "start": 21.5, "duration": 2.8 }
  ],
  "metadata": { "title": "...", "author_name": "...", "thumbnail_url": "..." }
}

{
  "video_id": "dQw4w9WgXcQ",
  "language": "en",
  "transcript": "[00:00:18] We're no strangers to love\n[00:00:21] You know the rules..."
}

© ZeroPointRepo, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 2 other files (references) in skills/captions of ZeroPointRepo/youtube-skills.

• SKILL.md
• references/auth-setup.md
• references/curl-examples.md

Open the folder on GitHubat commit 4f7994b

Used in 1 other repository

We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in ZeroPointRepo/youtube-skills, which our catalogue first saw on October 7, 2026.

• hashgraph-online/awesome-codex-pluginsplugins/ZeroPointRepo/youtube-skills/skills/captions