# HyperCLI Audio-to-Text Transcription

> HyperCLI Audio-to-Text Transcription is a paid API for AI agents from api.hypercli.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Transcribes audio files or URLs into text using AI models, billed at $0.01 USDC per call via x402 payment protocol

## Facts

- Endpoint: POST https://api.hypercli.com/api/x402/flow/audio-to-text
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hypercli-audio-to-text-transcription-08a85850
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5wZ5gZLp72F38YS04lR3-

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 hypercli-audio-to-text-transcription-08a85850 -d '<json body>'
```

Example prompt: Can you transcribe this audio file for me? The audio is at https://example.com/recording.mp3 — I need the text version of what was said.

## When to prefer this

Use this endpoint when you need cheap, fast audio-to-text transcription at $0.01 per call and can pay via x402/USDC. Ideal for agents that need to process audio URLs or uploaded file IDs without committing to a larger subscription. Choose this over HyperCLI's subscription plan for one-off or low-volume transcription tasks.

## Known failure modes

- Invalid or unreachable audio URL returns an error
- Unsupported audio format may fail processing
- Payment failure via x402 prevents job from starting
- Both file_ids and audio_url are null — no input provided
- Job may be pending if async; agent must poll status_url

## How this service works

audio-to-text — fixed price $0.01

## Output

Returns a JSON object with a render field containing the transcript, an access_key, a status_url to poll for async job status, and a cancel_url to abort the job if needed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "dry_run": {
   "type": "boolean",
   "default": false
  },
  "file_ids": {
   "anyOf": [
    {
     "type": "array",
     "items": {
      "type": "string"
     }
    },
    {
     "type": "null"
    }
   ],
   "default": null
  },
  "audio_url": {
   "anyOf": [
    {
     "type": "string"
    },
    {
     "type": "null"
    }
   ],
   "default": null
  },
  "notify_url": {
   "anyOf": [
    {
     "type": "string"
    },
    {
     "type": "null"
    }
   ],
   "default": null
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "render": {},
  "access_key": "example",
  "cancel_url": "example",
  "status_url": "example"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hypercli-audio-to-text-transcription-08a85850/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.hypercli.com](https://www.zero.xyz/host/api.hypercli.com/llms.txt)