Unif API Docs

Get a YouTube video's transcript

Return the transcript text for a YouTube video, by video ID, as ordered timestamped segments plus a concatenated plain-text field. Picks the caption track for the requested `lang` (default English, then the first available track), fetches its timed-text and parses it server-side. Returns 404 when the video has no captions.

Pricing — $ · min $0.001

Billed per record at 1 credit ($0.001) each, with a 1-credit ($0.001) minimum per call.

GET
/youtube/videos/{video_id}/transcript

Authorization

bearerAuth
AuthorizationBearer <token>

UnifAPI API key. Provider credentials are managed by UnifAPI.

In: header

Path Parameters

video_id*string
Length1 <= length

Query Parameters

lang?string

Caption language code to transcribe, e.g. en or es. Defaults to English.

Length2 <= length <= 35

Header Parameters

Unifapi-Version?"2026-07-01"

Pin the API version an integration was built against (date-based, e.g. 2026-07-01). Omit to use the current version. Public URL paths stay stable and unversioned; breaking changes ship under a new dated version and are announced with Deprecation and Sunset response headers. The served version is echoed in every response's Unifapi-Version header. Policy: https://unifapi.com/versioning.md

Default"2026-07-01"

Value in

  • "2026-07-01"

Response Body

application/json

application/json

application/json

application/json

application/json

application/json

application/json

application/json

application/json

curl -X GET "https://example.com/youtube/videos/string/transcript"
{  "request_id": "string",  "data": {    "video_id": "string",    "language_code": "string",    "language_name": "string",    "available_languages": [      {        "language_code": "string",        "language_name": "string"      }    ],    "segments": [      {        "start": 0,        "dur": 0,        "text": "string"      }    ],    "text": "string"  },  "billing": {    "credits_charged": 0,    "records_charged": 0,    "balance_remaining": 0,    "truncated_due_to_balance": true  }}