---
title: "Fetch one public YouTube transcript"
method: POST
path: "/transcripts"
tags: ["Transcripts"]
---

# Fetch one public YouTube transcript

`POST /transcripts`

Synchronously fetches a public YouTube transcript, reserves 1 credit before processing, and charges 1 credit on success.

## Request body

- union
  - object
    - `url` string, uri, required — YouTube video URL. Required when videoId is omitted.
    - `videoId` string — YouTube video ID. Required when url is omitted.
    - `language` string
  - object
    - `url` string, uri — YouTube video URL. Required when videoId is omitted.
    - `videoId` string, required — YouTube video ID. Required when url is omitted.
    - `language` string

## Response `200`

Transcript fetched

- TranscriptResponse
  - `transcriptionId` string, required
  - `source` 'public', required
  - `language` string, required
  - `durationSec` number, required
  - `expiresAt` string, date-time, required
  - `transcript` TranscriptSegment[], required
    - `startSec` number, required
    - `durationSec` number, required
    - `text` string, required
  - `creditsFrozen` integer, required
  - `creditsCharged` integer, required

## Other responses

- `400` — Invalid request
- `401` — Missing or invalid API key
- `402` — Not enough credits to start processing
- `403` — Forbidden request
- `404` — Resource not found
- `429` — Rate limit exceeded
- `500` — Internal server error

---

[API](https://skmtc.net/mediacaption/apis/media-caption-public-api.md) · [All operations](https://skmtc.net/mediacaption/apis/media-caption-public-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/mediacaption/media-caption-public-api/versions/fff36efa50d3/schema)