/v1/youtube/video/transcript

GET

Transcript

Get publicly available captions or a transcript from a YouTube video or Short

Credit cost	Default: 1 credit when no rule matches. 0 credits when response field transcript is empty or absent. How charges are determined Cost is decided per call, not per endpoint: the same operation can cost different amounts depending on what it returns. A call that fails costs 0 credits. A result served from cache costs 0 credits. `default` is the cost when no rule matches. Rules are evaluated in order and the first whose conditions all hold wins. A `when` condition is one of: `param` (the request parameter is true), `outcome` (the classifier's outcome), `empty` / `nonEmpty` (a response field is empty and absent, or a non-empty array or string), `flag` (a response field is exactly true). A cost of `{ perStartedMinute: n, of: [fields] }` is n x max(1, ceil(seconds / 60)), so even a short result bills at least one minute.
Cache support	Use a cached response this old or newer for 0 credits. If none is available, fetch live at the endpoint’s normal price.
Pagination	No explicit pagination metadata in the published contract. Consult the parameters and response fields below.

Parameters

Name	Location / required	Schema
`url` YouTube video or short URL	query / required	`string`
`language` Caption language, e.g. en or en-US; original_audio=true overrides it. Omit for automatic selection. No matching requested or identified original-language captions returns null at no charge.	query / optional	`string`
`original_audio` Set true for original-language captions only, overriding language. Unidentified original audio or missing captions returns null at no charge. A returned transcript costs 1 credit; no extra lookup.	query / optional	`boolean`
`cache_max_age` Use a cached response this old or newer for 0 credits. If none is available, fetch live at the endpoint’s normal price.	query / optional	`string` Allowed values `["1d","3d","7d","14d","30d"]`

Request examples

Replace placeholder values and supply your own API key. For operations with a request body, populate the body using the schema above.

cURL

curl --request GET 'https://api.fetchproof.com/v1/youtube/video/transcript?url=YOUR_URL' \
  --header 'x-api-key: YOUR_API_KEY'

JavaScript

const response = await fetch("https://api.fetchproof.com/v1/youtube/video/transcript?url=YOUR_URL", {
  method: 'GET',
  headers: { 'x-api-key': process.env.FETCHPROOF_API_KEY }
});
console.log(await response.text());

Python

import os
import requests

response = requests.get("https://api.fetchproof.com/v1/youtube/video/transcript?url=YOUR_URL",
    headers={"x-api-key": os.environ["FETCHPROOF_API_KEY"]})
print(response.text)

Responses

200Success. Envelope: success / credits_remaining / credits_charged.

application/json

object

successrequired

boolean

credits_remainingrequired

integer

credits_chargedrequired

integer

videoIdoptional

string

typerequired

string

urlrequired

string

transcriptoptional

array

Array items

object

textrequired

string

startMsrequired

string

endMsrequired

string

startTimeTextrequired

string

transcript_only_textoptional

string

languageoptional

string

cachedoptional

boolean

cached_atoptional

string

{
  "format": "date-time"
}

notFoundoptional

boolean

401Invalid or missing x-api-key

402No credits remaining

403Upstream denied (age gate, audience controls)

404Resource or endpoint not found

429Rate limited