$0.08
per call · USD Coin on Base
Generate high-fidelity expressive speech for $0.08 USDC. Call when you need English, Portuguese, or Spanish voiceover with emotion, speed, and pitch for up to 500 UTF-8 bytes—not a phone carrier or realtime session. Returns a validated 32 kHz mono WAV URL and SHA-256 receipt. No API key, no subscription.
Endpoint
POST https://api.delx.ai/api/v1/x402/speech-hd3
Calls / 30d
2
Unique payers / 30d
Aug 29
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://api.delx.ai/api/v1/x402/speech-hd", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
"emotion": "happy",
"language": "English",
"pitch": 0,
"speed": 1,
"text": "Your autonomous agent completed the mission successfully.",
"voice": "English_CaptivatingStoryteller"
}),
});
const data = await res.json();curl -X POST \
"https://api.delx.ai/api/v1/x402/speech-hd" \
-H "Content-Type: application/json" \
-d '{"emotion":"happy","language":"English","pitch":0,"speed":1,"text":"Your autonomous agent completed the mission successfully.","voice":"English_CaptivatingStoryteller"}' \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"audio_url": "https://api.delx.ai/api/v1/generated-audio-hd/7de36cd5f5f34ef8a28904b9b5985f60.wav",
"bytes": 588252,
"channels": 1,
"duration_ms": 9172,
"emotion": "happy",
"generation_id": "7de36cd5f5f34ef8a28904b9b5985f60",
"gross_margin_usd": 0.067,
"input_tokens": 130,
"language": "English",
"media_type": "audio/wav",
"model": "minimax/speech-02-hd",
"pitch": 0,
"provider": "replicate",
"provider_attempts": 1,
"sale_price_usdc": 0.08,
"sample_rate_hz": 32000,
"sample_width_bits": 16,
"sha256": "7ded32df89c15e721f6e997931b3ee28d40a89635fe35d91b5a496712e95bead",
"speed": 1,
"upstream_cost_usd": 0.013,
"voice": "English_CaptivatingStoryteller"
}Payment details
0x9f8bd9875b3e0b632a24a3a7c73f7787175e73a2USD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
Pin it to the top of Media & Generation and the homepage with a featured placement.
More from MiniMax Speech HD for Agents & similar services
Text-to-speech · TTS
agent402.tools
Convert text to speech using OpenAI TTS-1. Returns base64-encoded audio (mp3/opus/aac/flac/wav/pcm). 10 voices available. No API key needed; pay per call via x402. Text capped at 2000 chars.
Fly · Generate Image
nanobanana-x402.fly.dev
Generate an AI image from a text prompt using Google Gemini 3.1 Flash Image. Returns base64-encoded PNG. Optional aspectRatio (1:1, 16:9, 9:16, 3:2, 2:3, 4:3, 3:4, 4:5, 5:4, 21:9). Backed by Google's Gemini image preview model — fast, high-quality, supports text rendering inside images.
Driftflight · Images Generate
agents.driftflight.com
Generate an image from a text prompt