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Universal Audio Converter
x402
Universal Audio Converter is a paid API for AI agents from x402scan-services-gq1i.onrender.com, paid per call via x402, $0.005/call, status down (last checked 2026-09-15).
Converts a public audio URL into a targeted format (WAV, compressed, telephony, etc.) optimized for LLMs, voice bots, STT engines, and TTS pipelines using a preset-based system.
Price / call$0.005
Success—
StatusDown
How this service works
Pay-per-request audio format converter optimized for AI agent workflows. Converts public audio URLs into targeted formats for LLMs, Voice Bots, and TTS engines.
Output
A JSON object containing: a base64-encoded data URI of the converted audio (audioDataUri), the output format name (e.g. 'wav'), the file size in bytes (sizeBytes), the preset that was applied (presetUsed), and a success boolean. The audio data URI can be passed directly to downstream LLM, STT, or voice bot APIs.
Example use cases
Transcribing podcast episode with Whisper
“I have a podcast episode at https://podcast-host.com/episode42.mp3 — can you convert it to a Whisper-compatible WAV so I can get a transcript from it?”
Preparing audio for telephony voice bot
“My voice bot needs audio in the right format for a telephony system. Can you convert this recording at https://storage.example.com/call-intro.ogg using the telephony_bot preset?”
Voice clone prep from audio URL
“I want to clone a voice from this audio file at https://mysite.com/speaker-sample.wav — can you reformat it using the voice_clone_ready preset so it's ready for the voice cloning engine?”
Technical details
Endpoint
GEThttps://x402scan-services-gq1i.onrender.com/api/v1/audio/convertWhen to prefer
Choose this endpoint when an AI agent pipeline needs to normalize audio from an arbitrary public URL into a specific format required by a downstream service (Whisper STT, telephony IVR, voice cloning, LLM context compression, or web playback). It is especially useful when you need a ready-to-use base64 data URI without managing your own ffmpeg or audio processing infrastructure. The preset system makes it trivial to target a specific downstream consumer without specifying codec parameters manually.
Side effects
- Invalid or inaccessible sourceUrl returns an error (non-public URL, 404, or auth-gated resource)
- Unsupported audio format at the source URL may cause conversion failure
- Invalid preset value returns a validation error
- Payment failure (x402 protocol) prevents the request from being processed
- Large audio files may exceed size or processing limits
- Network timeout if the source audio URL is slow to fetch
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| preset | string | |
| sourceUrl | string | Public HTTP(S) audio file URL to convert. |
Output
Schema · Response
{
"type": "json",
"format": "json",
"example": {
"format": "wav",
"success": true,
"sizeBytes": 142000,
"presetUsed": "stt_whisper",
"audioDataUri": "data:audio/wav;base64,UklGRi..."
}
}Tags
x402
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