the402 endpoint detail

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api.delx.ai x402 speech

https://api.delx.ai/api/v1/x402/speech

payable

Text-to-speech API and voice generator for AI agents: create short narration, voiceover, voice-agent prompts, IVR and notification clips with Kokoro at the $0.001 market floor. Accepts native `text` or OpenAI-shaped `input`, `model`, `voice`, `response_format`, and `speed` fields for clips up to 500 characters. No API key or subscription; returns a durable WAV URL and SHA-256 receipt.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.002
Network
base
Pay to
0x9f8bd9875b3E0b632a24A3A7C73f7787175e73A2
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
303 ms
Payment options
3 usable of 3
Last checked
2026-08-10T09:13:02.722Z (1d ago)
Category
ai-inference

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.delx.ai%2Fapi%2Fv1%2Fx402%2Fspeech"