transcriptapi

1# TranscriptAPI
2 
3Full YouTube data toolkit via [TranscriptAPI.com](https://transcriptapi.com). Transcripts, search, channels, playlists — one API key.
4 
5## Setup
6 
7If `$TRANSCRIPT_API_KEY` is not set, read [references/auth-setup.md](references/auth-setup.md) and follow the instructions there to get and store the key.
8 
9## Required Headers
10 
11Every request needs two headers:
12 
13- **Authorization:** `Bearer $TRANSCRIPT_API_KEY`
14- **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.
15 
16## API Reference
17 
18Full OpenAPI spec: [transcriptapi.com/openapi.json](https://transcriptapi.com/openapi.json) — consult this for the latest parameters and schemas.
19 
20## Auth
21 
22All requests: `-H "Authorization: Bearer $TRANSCRIPT_API_KEY"`
23 
24## Endpoints
25 
26Channel endpoints accept `channel` — an `@handle`, channel URL, or `UC...` ID. No need to resolve first. Playlist endpoints accept `playlist` — a playlist URL or ID.
27 
28### GET /api/v2/youtube/transcript — 1 credit
29 
30```bash
31curl -s "https://transcriptapi.com/api/v2/youtube/transcript\
32?video_url=VIDEO_URL&format=text&include_timestamp=true&send_metadata=true" \
33  -H "Authorization: Bearer $TRANSCRIPT_API_KEY" \
34  -H "User-Agent: YourAgent/1.0"
35```
36 
37| Param               | Required | Default | Validation                      |
38…