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The Stall – Audio Transcription (x402)
x402
The Stall – Audio Transcription (x402) is a paid API for AI agents from the-stall.intuitek.ai, paid per call via x402, $0.213/call, status unknown (last checked 2026-09-14, last successful call 2026-07-23).
Transcribes a publicly accessible audio file (mp3, wav, m4a, etc.) to text, with optional language hinting, paid per-call in USDC on Base via x402.
Price / call$0.213
Success89%
StatusUnknown
How this service works
Transcribe audio from any publicly accessible URL using OpenAI Whisper. Supports mp3, mp4, m4a, wav, webm, ogg, flac, and wma up to 24 MB. Returns the full transcript text, detected language, and estimated duration in seconds. Optionally accepts an ISO 639-1 language hint to improve accuracy. Useful for processing voice memos, meeting recordings, podcast snippets, interview clips, and audio attached to social media. Undercuts orbisapi.com audio-transcription-api by 24%.
Output
Returns the full text transcript of the spoken content in the audio file, extracted from the publicly accessible URL provided. If a language hint was supplied, accuracy is optimized for that language; otherwise the language is auto-detected.
Example use cases
Podcast episode to text
“Hey, can you turn this podcast episode into a written transcript for me? The mp3 is publicly hosted at https://example.com/podcast-episode-42.mp3 — I just need the full text of everything that was said so I can search through it.”
Transcribe multilingual voice memo
“I've got a voice memo in Spanish that I need transcribed to text. It's a wav file at https://example.com/memo-es.wav — can you make sure to use Spanish as the language hint so the accuracy is as good as possible?”
Convert interview recording to text
“Can you transcribe this recorded customer interview for me? It's an m4a file hosted at https://example.com/customer-interview.m4a — I need the full written transcript so I can pull out quotes and key insights from what the person said.”
Technical details
Endpoint
GEThttps://the-stall.intuitek.ai/cap/audio-transcribeWhen to prefer
Choose this endpoint when you need a no-account, no-API-key, pay-per-use audio transcription service that accepts a public URL and returns text. Ideal for AI agents that want to transcribe occasional audio files without managing subscriptions or credentials. Supports a broad range of audio formats and optional language hinting for improved accuracy.
Side effects
- Audio URL is not publicly accessible or requires authentication — returns an error
- Audio file exceeds 24 MB size limit — rejected
- Unsupported audio format (only mp3, mp4, m4a, wav, webm, ogg, flac, wma are supported)
- Invalid or malformed URL provided
- Payment via x402/USDC fails or is insufficient — HTTP 402 returned
- Poor audio quality leading to low-accuracy transcript
- Language hint does not match actual audio language, degrading accuracy
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"url": "https://www.soundhelix.com/examples/mp3/SoundHelix-Song-1.mp3",
"language": "en"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string |
Output
{
"model": "whisper-1",
"language": "english",
"duration_s": 372.71,
"source_url": "https://www.soundhelix.com/examples/mp3/SoundHelix-Song-1.mp3",
"transcript": "Took me a little while to figure out how to get these lighting here because it's so blurry... You have to use all your guidance to control the lighting, but nurses usually have a faster hand than I do. See, there's nothing you can do outside of your hands! There's nothing you can do outside of your hands! There's nothing you can do outside of your hands! There's nothing you can do outside of your hands! Stop! Stop! There's nothing you can do outside of your hands! There's nothing you can do outside of your hands! There's nothing you can do outside of your hands! There's nothing you can do outside of your hands! There's nothing you can do outside of your hands! The Theorem",
"word_count": 125,
"generated_at": "2026-06-12T05:09:01.974Z"
}Tags
x402
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