YouTube Channels

YouTube channel tools via TranscriptAPI.com.

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.

All channel endpoints accept flexible input — @handle, channel URL, or UC... channel ID. No need to resolve first.

GET /api/v2/youtube/channel/resolve — FREE

Convert @handle, URL, or UC... ID to canonical channel ID.

curl -s "https://transcriptapi.com/api/v2/youtube/channel/resolve?input=@TED" \
  -H "Authorization: Bearer $TRANSCRIPT_API_KEY" \
  -H "User-Agent: YourAgent/1.0"

Param	Required	Validation
input	yes	1-200 chars — @handle, URL, or UC... ID

Response:

{ "channel_id": "UCsT0YIqwnpJCM-mx7-gSA4Q", "resolved_from": "@TED" }

If input is already UC[a-zA-Z0-9_-]{22}, returns immediately.

GET /api/v2/youtube/channel/latest — FREE

Latest 15 videos via RSS with exact stats.

curl -s "https://transcriptapi.com/api/v2/youtube/channel/latest?channel=@TED" \
  -H "Authorization: Bearer $TRANSCRIPT_API_KEY" \
  -H "User-Agent: YourAgent/1.0"

Param	Required	Validation
channel	yes	@handle, channel URL, or UC... ID

Response:

{
  "channel": {
    "channelId": "UCsT0YIqwnpJCM-mx7-gSA4Q",
    "title": "TED",
    "author": "TED",
    "url": "https://www.youtube.com/channel/UCsT0YIqwnpJCM-mx7-gSA4Q",
    "published": "2006-04-17T00:00:00Z"
  },
  "results": [
    {
      "videoId": "abc123xyz00",
      "title": "Latest Video Title",
      "channelId": "UCsT0YIqwnpJCM-mx7-gSA4Q",
      "author": "TED",
      "published": "2026-01-30T16:00:00Z",
      "updated": "2026-01-31T02:00:00Z",
      "link": "https://www.youtube.com/watch?v=abc123xyz00",
      "description": "Full video description...",
      "thumbnail": { "url": "https://i1.ytimg.com/vi/.../hqdefault.jpg" },
      "viewCount": "2287630",
      "starRating": {
        "average": "4.92",
        "count": "15000",
        "min": "1",
        "max": "5"
      }
    }
  ],
  "result_count": 15
}

Great for monitoring channels — free and gives exact view counts + ISO timestamps.

GET /api/v2/youtube/channel/videos — 1 credit/page

Paginated list of ALL channel uploads (100 per page).

# First page
curl -s "https://transcriptapi.com/api/v2/youtube/channel/videos?channel=@NASA" \
  -H "Authorization: Bearer $TRANSCRIPT_API_KEY" \
  -H "User-Agent: YourAgent/1.0"

# Next pages
curl -s "https://transcriptapi.com/api/v2/youtube/channel/videos?continuation=TOKEN" \
  -H "Authorization: Bearer $TRANSCRIPT_API_KEY" \
  -H "User-Agent: YourAgent/1.0"

Param	Required	Validation
channel	conditional	@handle, channel URL, or UC... ID
continuation	conditional	non-empty (next pages)

Provide exactly one of channel or continuation, not both.

Response:

{
  "results": [{
    "videoId": "abc123xyz00",
    "title": "Video Title",
    "channelId": "UCsT0YIqwnpJCM-mx7-gSA4Q",
    "channelTitle": "TED",
    "channelHandle": "@TED",
    "lengthText": "15:22",
    "viewCountText": "3.2M views",
    "thumbnails": [...],
    "index": "0"
  }],
  "playlist_info": {"title": "Uploads from TED", "numVideos": "5000", "ownerName": "TED"},
  "continuation_token": "4qmFsgKlARIYVVV1...",
  "has_more": true
}

Keep calling with continuation until has_more: false.

GET /api/v2/youtube/channel/search — 1 credit

Search within a specific channel.

curl -s "https://transcriptapi.com/api/v2/youtube/channel/search\
?channel=@TED&q=climate+change&limit=30" \
  -H "Authorization: Bearer $TRANSCRIPT_API_KEY" \
  -H "User-Agent: YourAgent/1.0"

Param	Required	Validation
channel	yes	@handle, channel URL, or UC... ID
q	yes	1-200 chars
limit	no	1-50 (default 30)

Typical workflow

# 1. Check latest uploads (free — pass @handle directly)
curl -s "https://transcriptapi.com/api/v2/youtube/channel/latest?channel=@TED" \
  -H "Authorization: Bearer $TRANSCRIPT_API_KEY" \
  -H "User-Agent: YourAgent/1.0"

# 2. Get transcript of recent video
curl -s "https://transcriptapi.com/api/v2/youtube/transcript\
?video_url=VIDEO_ID&format=text&include_timestamp=true&send_metadata=true" \
  -H "Authorization: Bearer $TRANSCRIPT_API_KEY" \
  -H "User-Agent: YourAgent/1.0"

Errors

Code	Meaning	Action
400	Invalid param combination	Both or neither channel/continuation
402	No credits	transcriptapi.com/billing
403/1010	Cloudflare block	Add or fix User-Agent header
404	Channel not found	Check handle or URL
408	Timeout	Retry once
422	Invalid channel identifier	Check param format

Free tier: 100 credits, 300 req/min. Free endpoints (resolve, latest) require auth but don't consume credits.