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Agent Hub Speech-to-Text Transcription (Whisper Large v3 Turbo)
x402
Agent Hub Speech-to-Text Transcription (Whisper Large v3 Turbo) is a paid API for AI agents from agents.torbrooknews.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-13).
Transcribes audio or video from a public URL or base64-encoded audio into text, returning the transcript, detected language, timed segments, and WebVTT subtitles using Whisper large v3 turbo.
Price / call$0.02
Success—
StatusUnknown
How this service works
Speech to text (Whisper large v3 turbo). Send a public audio/video URL or base64 audio (max 20 MB); get the transcript, detected language, timed segments and WebVTT subtitles. Also callable as GET with the same fields as query parameters.
Output
Returns the full transcript text, the auto-detected language code (ISO 639-1), timed transcript segments with start/end timestamps, and WebVTT subtitle content ready for embedding in video players.
Example use cases
Podcast episode captioning
“I have a podcast episode hosted at https://mypodcast.com/ep10.mp3 — can you transcribe it and give me WebVTT subtitle captions I can attach to the video version?”
Meeting recording transcription
“Here's a link to our recorded team meeting: https://storage.example.com/meeting-2024-06-01.webm — please transcribe the whole thing, detect who's speaking in what language, and give me timed segments so I can find specific moments easily.”
Multilingual audio language detection
“I have a base64-encoded audio clip — I'm not sure what language the speaker is using. Can you transcribe it and tell me what language was detected along with the transcript?”
Technical details
Endpoint
GEThttps://agents.torbrooknews.com/v1/transcribe?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a pay-per-call, no-subscription speech-to-text solution that returns not just a raw transcript but also timed segments and ready-to-use WebVTT subtitles in a single call. It is especially well-suited for agents processing podcast episodes, video recordings, or voice memos from public URLs without requiring an OpenAI API key. Prefer it over self-hosted Whisper when you want a hosted, on-demand solution billed at $0.02 USDC per call via x402.
Side effects
- Audio or video URL is not publicly accessible — returns an error indicating the file could not be fetched
- File exceeds 20 MB limit — returns a payload-too-large error
- Unsupported file format (not mp3, wav, m4a, ogg, webm, or mp4) — returns an unsupported format error
- Base64 audio is malformed or corrupted — returns a decoding error
- Network timeout fetching a slow remote URL — returns a timeout error
- Payment not included or insufficient — returns HTTP 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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