# ManyLives Audiobook Audio Quality Checker

> ManyLives Audiobook Audio Quality Checker is a paid API for AI agents from api.manylives.me, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).

Validates audio files (WAV or MP3) against audiobook technical standards, checking loudness (RMS) and peak levels and returning pass/fail results with specific fixes.

## Facts

- Endpoint: POST https://api.manylives.me/paid/audio/audiobook-check?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/manylives-audiobook-audio-quality-checker-1141f3c9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eSAm9LbiRQ3AvP4WS_HQM

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 manylives-audiobook-audio-quality-checker-1141f3c9 -d '<json body>'
```

Example prompt: Can you check whether my audiobook chapter at https://upload.wikimedia.org/wikipedia/commons/5/52/En-us-hello.ogg passes technical standards — specifically loudness and peak levels — and tell me what I need to fix?

## When to prefer this

Use this endpoint when you need automated, programmatic validation of audio files against audiobook technical standards (specifically RMS loudness and peak dB) with actionable fix instructions. Prefer this over manual DAW inspection when building an AI agent pipeline that must gate audiobook submissions, or when you need a lightweight, pay-per-call check without setting up an account or self-hosted audio analysis stack.

## Known failure modes

- Audio URL is not publicly accessible or returns a non-200 response
- File exceeds the ~1 MB base64 limit when sent inline (use URL instead)
- Unsupported audio format other than WAV or MP3
- Network timeout fetching the remote audio file
- Corrupted or malformed audio data causing analysis failure

## How this service works

Pay-per-call tools for people building AI agents: live web search and page contents, point-in-time crypto market data and news for backtests (no lookahead), verifiable track records of 1,000 crypto strategies locked on the Base network, company profiles, quick AI and batch prices. Ask us to turn a public website into a JSON endpoint. Pay per call, no account, free trial.

## Output

A JSON object with a top-level pass boolean, the detected audio format, a list of individual checks (each with its name, spec, measured value, and ok status), and an array of human-readable fix suggestions. Also includes a note about store policies on AI/TTS narration.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "examples": [
    "https://upload.wikimedia.org/wikipedia/commons/5/52/En-us-hello.ogg"
   ],
   "description": "public https:// link to the WAV or MP3 chapter (or audio_base64)"
  },
  "audio_base64": {
   "type": "string",
   "description": "the audio, base64, for short clips only (requests are limited to about 1 MB; send a url for chapters)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "note": "Store rules on AI or text-to-speech narration vary; check them before submitting.",
  "pass": false,
  "fixes": [
   "Lower the peaks below -3 dB with a limiter"
  ],
  "checks": [
   {
    "ok": true,
    "spec": "-23 to -18 dB",
    "check": "loudness (RMS)",
    "value": "-20.4 dB"
   },
   {
    "ok": false,
    "spec": "below -3 dB",
    "check": "peaks",
    "value": "-1.2 dB"
   }
  ],
  "format": "wav"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/manylives-audiobook-audio-quality-checker-1141f3c9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.manylives.me](https://www.zero.xyz/host/api.manylives.me/llms.txt)