# The Stall – Audio Transcription (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.

## Facts

- Endpoint: GET https://the-stall.intuitek.ai/cap/audio-transcribe
- Price: $0.213/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Last successful call: 2026-07-23
- Success rate: 89% of calls made through Zero
- Activations on Zero: 42
- Tags: x402
- Canonical page: https://www.zero.xyz/c/the-stall-audio-transcription-x402-41d26e1e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fTwE_0ySxCGmeH3zCOOPf

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability the-stall-audio-transcription-x402-41d26e1e
```

Example prompt: Can you transcribe this audio file for me? It's an English interview recording available at https://example.com/interview.mp3 — just give me the full text of what was said.

## When to prefer this

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.

## Known failure modes

- 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

## 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 request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "url": "https://www.soundhelix.com/examples/mp3/SoundHelix-Song-1.mp3",
   "language": "en"
  }
 }
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "properties": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/the-stall-audio-transcription-x402-41d26e1e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from the-stall.intuitek.ai](https://www.zero.xyz/host/the-stall.intuitek.ai/llms.txt)