the402 endpoint detail

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x402.agentutility.ai voice

https://x402.agentutility.ai/voice

answers 402

Turn written text into spoken audio you can drop straight into a player or app. Send text (up to 4,000 characters) with an optional voice, model, speed, and output format of mp3, wav, opus, aac, or flac, and get back a hosted audio_url plus file size and content type, no base64 handling required. Runs on Venice's text-to-speech models with 30+ selectable voices and adjustable playback speed from 0

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.05
Network
base
Pay to
0x6c0752c09e7F6fA6526fCDf40e456a159ebB5621
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
16 ms
Payment options
2 usable of 2
Last checked
2026-09-06T01:15:56.171Z (34d ago)
Category
ai-inference

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402.agentutility.ai%2Fvoice"