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Adam Hale Tools: Short Audio Transcription (Whisper)
x402
Adam Hale Tools: Short Audio Transcription (Whisper) is a paid API for AI agents from tools.adamhaleworks.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-15).
Transcribes or translates short public audio files (up to 2 MB) to text and WebVTT captions using Whisper large-v3-turbo, with optional voice activity detection and language detection.
Price / call$0.01
Success—
StatusUnknown
How this service works
Guides and free-to-run Apify actors for bulk tech stack lookup, sitemap URL export to CSV, TED and UK Find a Tender search, and RSS-to-JSON feed monitoring.
Output
Returns a JSON object containing: the full plain-text transcript, a WebVTT-formatted caption string with timestamps, an array of timestamped segments (start, end, text), detected language code, language detection probability, word count, audio duration in seconds, MIME type, file size in bytes, the model used (Whisper large-v3-turbo), and the resolved final URL of the audio file.
Example use cases
Podcast episode transcript from URL
“I have a direct MP3 link to this week's podcast episode — can you transcribe it to text and give me the timestamped segments so I can create show notes? The URL is https://example.com/podcast/episode42.mp3”
Translate foreign language audio to English
“I have an OGG audio file of a German speech at https://example.com/speech_de.ogg — please translate it into English text and give me the full transcript.”
Auto-caption a short voice memo
“Here's a public link to a voice memo WAV file: https://example.com/memo.wav — can you transcribe it and generate WebVTT captions with timestamps? Turn off voice activity detection since the whole clip is speech.”
Technical details
Endpoint
GEThttps://tools.adamhaleworks.workers.dev/x402/v1/transcribe-short?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you have a direct public URL to a short audio file (under 2 MB) and need fast, low-cost transcription or English translation with timestamped captions. It is ideal for voice memos, short podcast clips, recorded speeches, or any audio where WebVTT output and segment-level timestamps are needed. Prefer this over heavier transcription services when cost ($0.01/call), speed, and Whisper large-v3-turbo quality are priorities. Not suitable for YouTube links, social media URLs, or files over 2 MB.
Side effects
- Audio file URL is not directly accessible (e.g. YouTube or social media page instead of direct file link) — returns error
- Audio file exceeds 2 MB size limit — returns error
- Unsupported audio format — only MP3, WAV, M4A, OGG, FLAC, WebM are accepted
- noSpeech:true returned when no speech is detected in the audio
- Network timeout if the audio URL is slow to respond
- Invalid ISO 639-1 language code passed — may fall back to auto-detection or error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"vtt": "WEBVTT\n\n00:00.240 --> 00:01.260\n Yesterday,\n\n00:01.660 --> 00:03.360\n December\n\n…",
"task": "transcribe",
"text": "Yesterday, December 7, 1941, a state which will live in infamy. The United States of America was suddenly and deliberately attacked by naval and air forces of the Empire of Japan.",
"bytes": 363717,
"model": "@cf/openai/whisper-large-v3-turbo",
"finalUrl": "https://upload.wikimedia.org/wikipedia/commons/4/46/1941_Roosevelt_speech_pearlharbor_p1.ogg",
"mimeType": "audio/ogg",
"noSpeech": false,
"segments": [
{
"end": 12.84,
"text": "Yesterday, December 7, 1941, a state which will live in infamy.",
"start": 0.24
},
{
"end": 25.07,
"text": "The United States of America was suddenly and deliberately attacked by naval and air forces of the Empire of Japan.",
"start": 13.06
}
],
"sourceUrl": "https://upload.wikimedia.org/wikipedia/commons/4/46/1941_Roosevelt_speech_pearlharbor_p1.ogg",
"wordCount": 31,
"durationSeconds": 26.1,
"detectedLanguage": "en",
"languageProbability": 0.997
}
}Tags
x402
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