x402factory.ai · tts

Base text-to-speech API paid via x402. Converts text input into a hosted audio URL. Dynamic pricing for TTS: the prepaid price is computed per request based on the input and charged upfront via x402. Estimated characters for this request: 15. Prepaid price for this request: 0.009000 USDC.

Call it in 30 seconds

// npm i x402-fetch viem
import { wrapFetchWithPayment } from "x402-fetch";
import { createWalletClient, http } from "viem";
import { privateKeyToAccount } from "viem/accounts";
import { base } from "viem/chains";

const account = privateKeyToAccount(process.env.PRIVATE_KEY); // funds USDC on Base
const wallet = createWalletClient({ account, chain: base, transport: http() });
const fetchWithPay = wrapFetchWithPayment(fetch, wallet);

// Pays the $0.009 USDC automatically on the 402, then returns the real response:
const res = await fetchWithPay("https://x402factory.ai/base/tts", { method: "POST" });
console.log(await res.json());

# pip install x402 eth-account httpx
import os, asyncio
from eth_account import Account
from x402.clients.httpx import x402HttpxClient

account = Account.from_key(os.environ["PRIVATE_KEY"])  # funds USDC on Base

async def main():
    async with x402HttpxClient(account=account) as client:
        # x402 handles the 402 -> pay ($0.009 USDC) -> retry automatically
        r = await client.get("https://x402factory.ai/base/tts")
        print((await r.aread()).decode())

asyncio.run(main())

# 1) An unpaid request returns HTTP 402 with the exact payment terms:
curl -i -X POST "https://x402factory.ai/base/tts" \
  -H 'content-type: application/json' \
  -d '{"action": {"description": "Optional action. Omit for TTS. Use 'list' to list available voices instead of generating speech.", "enum": ["list"], "required": false, "type": "string"}, "text": {"description": "Text to convert to speech when action is omitted (TTS mode). Required for paid TTS calls.", "required": false, "type": "string"}, "voice_id": {"description": "Optional ElevenLabs voice_id. If omitted, a default narrator voice is used.", "required": false, "type": "string"}}'

# 2) Paying + retrying requires an x402 client that can sign the USDC
#    authorization (curl alone cannot). See the JS / Python tabs below.

New to x402? Read the 5-minute quickstart →