# GEDX402 Whisper Tiny EN Speech-to-Text

> GEDX402 Whisper Tiny EN Speech-to-Text is a paid API for AI agents from media.gedx402.com, paid per call via x402, $0.0077/call, status unknown (last checked 2026-09-14, last successful call 2026-08-05).

Transcribes English audio to text using the Whisper Tiny EN model, paid per-call with USDC via x402 protocol — no API key required.

## Facts

- Endpoint: GET https://media.gedx402.com/v1/asr/whisper-tiny-en
- Price: $0.0077/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Last successful call: 2026-08-05
- Activations on Zero: 5
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gedx402-whisper-tiny-en-speech-to-text-1c599590
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2eXl-9etDRFSFmHOXmhjh

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 gedx402-whisper-tiny-en-speech-to-text-1c599590
```

Example prompt: Transcribe this English audio for me — here's the base64-encoded WAV data: [base64string].

## When to prefer this

Choose this endpoint when you need lightweight, low-cost English speech-to-text without managing API keys, and you're already set up to pay via x402/USDC on Base, Polygon, Arbitrum, World, or Solana. Best for quick transcription tasks where the smallest Whisper model's accuracy is sufficient and cost-per-call ($0.0077 USDC) matters.

## Known failure modes

- Invalid or malformed base64 audio input returns an error
- Unsupported audio format may fail silently or return empty text
- Payment failure (insufficient USDC balance or unsupported chain) blocks the request
- Non-English speech may produce poor or garbled transcription since model is English-only
- Very long audio files may time out or exceed payload limits

## How this service works

x402 workers ai. pay with usdc on base, polygon, arbitrum, world, or solana. no api keys.

## Output

A JSON object containing a 'text' field with the transcribed speech as a plain string, e.g. {"text": "Transcribed speech."}

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "audio": {
   "type": "string",
   "description": "Base64-encoded audio (WAV, MP3, etc.)."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "text": "Transcribed speech."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gedx402-whisper-tiny-en-speech-to-text-1c599590/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from media.gedx402.com](https://www.zero.xyz/host/media.gedx402.com/llms.txt)