YouTube Video Captions
https://api.sandbase.ai/v1/api/youtube/video-captionsGet available caption tracks for a YouTube video or request captions in SRT, XML, JSON3, or plain-text format. Use it to support transcription, accessibility, localization, or text analysis.
- Price
- $0.02USD / call
- Method
- POST
- Response
- JSON
- Parameters
- 1 required · 2 optional
Try the model
Playground
Your output will appear here
Complete the inputs, then click Run.
Model card
Specifications
Pricing
- Base price
- $0.02 / run
Request & response
- Method
- POST
- Request body
- application/json
- Response
- application/json
- Execution
- sync
Parameters
- videoId
- string · required
- languageCode
- string · optional
- format
- string (srt, xml, json3, txt) · optional
Access
- Provider
- YouTube
- API
- Platform API
- Base URL
- https://api.sandbase.ai
- Endpoint
- /v1/api/youtube/video-captions
- Authentication
- Bearer API key
API README
YouTube Video Captions API
Get available caption tracks for a YouTube video or request captions in SRT, XML, JSON3, or plain-text format. Use it to support transcription, accessibility, localization, or text analysis.
The response is the platform's original data structure.
Request
curl -X POST "https://api.sandbase.ai/v1/run" \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "youtube/video-captions", "videoId": "dQw4w9WgXcQ"}'
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
videoId | string | Yes | The unique identifier for a YouTube video. |
languageCode | string | No | Caption language code, such as en, zh-Hans, or a.en. Leave it empty to retrieve available caption tracks. |
format | string | No | Caption output format. |
Pricing
Flat price per call. Failed calls and empty results are not charged.
Start building
Send your first request
Platform API endpoint with unified authentication and usage tracking.
# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
-X POST "https://api.sandbase.ai/v1/api/youtube/video-captions" \
-H "Authorization: Bearer $SANDBASE_API_KEY" \
-H "Content-Type: application/json" \
--data-binary @- <<'SANDBASE_JSON'
{
"format": "srt",
"videoId": "dQw4w9WgXcQ"
}
SANDBASE_JSON
)
printf '%s\n' "$result"Explore more
Related APIs
| API | Price | Response | Released |
|---|---|---|---|
YouTube Video CaptionsThis API YouTube | $0.02 per call | JSON | Oct 29, 2026 |
YouTube | $0.02 per call | JSON | Oct 29, 2026 |
YouTube | $0.02 per call | JSON | Oct 29, 2026 |
YouTube | $0.02 per call | JSON | Oct 29, 2026 |
YouTube | $0.02 per call | JSON | Oct 29, 2026 |
YouTube | $0.0015 per call | JSON | Jul 31, 2026 |
Questions
FAQ
How do I use the YouTube Video Captions API?
Send a POST request to https://api.sandbase.ai/v1/api/youtube/video-captions with your SandBase API key in the Authorization header (Bearer) and the parameters as a JSON body. You can also try it in the Playground on this page without writing code.
How much does the YouTube Video Captions API cost?
$0.02 per call, billed from your SandBase balance. You are only charged for calls you make; there is no subscription.
What parameters does the YouTube Video Captions API accept?
Required: videoId (string). Optional: languageCode (string) and format (one of srt, xml, json3, txt). The Parameters table and the Playground on this page list every field.
What does the YouTube Video Captions API return?
A JSON response returned in the same HTTP request (synchronous).
Do I need a YouTube developer account or API key?
No. YouTube Video Captions runs through SandBase, so one SandBase API key covers this endpoint and every other API and model in the catalog. You do not need to apply for YouTube API access separately.