ToolVet
75trust / 100

Tts Openrouter

by x402engine.app in AI models & inference

x402 APIPassing, checked 4 h ago

x402engine — Voxtral Mini TTS through OpenRouter; 30 voices, MP3 audio, up to 2000 UTF-8 bytes of text

POST
https://x402engine.app/api/tts/openrouter
Price
$0.06
per call in USDC
Uptime
100%
last 30 days
Response time
313 ms
532 ms slowest 5%
Last check
Passed
4 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://x402engine.app/api/tts/openrouter

Each call costs $0.06 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://x402engine.app/api/tts/openrouter
content-type: application/json

{
  "format": "mp3",
  "text": "Hello world",
  "voice": "en_paul_neutral"
}

Parameters

ParameterTypeRequiredDescription
formatstringNoFixed MP3 output One of: mp3. Default: "mp3".
textstringYesNon-empty text, at most 2000 UTF-8 bytes
voicestringNoVoxtral preset voice One of: en_paul_sad, en_paul_neutral, en_paul_happy, en_paul_frustrated, en_paul_excited, en_paul_confident, en_paul_cheerful, en_paul_angry, gb_oliver_neutral, gb_oliver_sad, gb_oliver_excited, gb_oliver_curious. Default: "en_paul_neutral".

Example response

The provider's example. We can't check it without paying.

{
  "audio": "<base64-encoded audio>",
  "format": "mp3"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.06.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://x402engine.app/api/tts/openrouter' \
  -H 'content-type: application/json' \
  --data-raw '{"format":"mp3","text":"Hello world","voice":"en_paul_neutral"}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://x402engine.app/api/tts/openrouter' \
  -H 'content-type: application/json' \
  --data-raw '{"format":"mp3","text":"Hello world","voice":"en_paul_neutral"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.06 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.06" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.06 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fx402engine.app%2Fapi%2Ftts%2Fopenrouter&method=POST
const res = await pay("https://x402engine.app/api/tts/openrouter", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "format": "mp3",
    "text": "Hello world",
    "voice": "en_paul_neutral"
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.06 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.06"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://x402engine.app/api/tts/openrouter",
        json={
            "format": "mp3",
            "text": "Hello world",
            "voice": "en_paul_neutral",
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
4 h agoPassed402404 ms$0.06
8 h agoPassed402313 ms$0.06
13 h agoPassed402403 ms$0.06
17 h agoPassed402297 ms$0.06
21 h agoPassed402391 ms$0.06
Show 10 older checks
25 h agoPassed402509 ms$0.06
30 h agoPassed402435 ms$0.06
34 h agoPassed402317 ms$0.06
38 h agoPassed402356 ms$0.06
42 h agoPassed402301 ms$0.06
47 h agoPassed402456 ms$0.06
2 days agoPassed402283 ms$0.06
2 days agoPassed402192 ms$0.06
2 days agoPassed402286 ms$0.06
3 days agoPassed402300 ms$0.06