# Autumn Eight Audio Transcription

> Autumn Eight Audio Transcription is a paid API for AI agents from x402.autumn8.net, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).

Transcribes audio files to text using an agent-payable x402 inference endpoint

## Facts

- Endpoint: POST https://x402.autumn8.net/v1/audio/transcriptions?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/autumn-eight-audio-transcription-34d28d88
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Qi0O3q3bnyrn8e6b7HZHk

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 autumn-eight-audio-transcription-34d28d88 -d '<json body>'
```

Example prompt: Can you transcribe this audio recording for me — just send the file and get back the full text of what was said?

## When to prefer this

Choose this endpoint when you need agent-native, pay-per-use audio transcription without managing API keys or subscriptions — especially in autonomous agent workflows where x402 micropayment support is required. Well-suited for one-off transcription tasks at $0.01 USDC per call.

## Known failure modes

- Unsupported audio format or codec may cause processing failure
- Audio file too large or corrupted may result in an error
- Payment failure (x402) if wallet balance is insufficient for the $0.01 USDC fee
- Very noisy or unclear audio may produce inaccurate transcriptions
- Missing or malformed 'file' field in request body returns a validation error

## How this service works

Agent-payable inference. Chat, embeddings, rerank, transcription and speech.

## Output

Returns a text transcription of the spoken content from the submitted audio file, converting speech to readable text.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/autumn-eight-audio-transcription-34d28d88/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.autumn8.net](https://www.zero.xyz/host/x402.autumn8.net/llms.txt)