Text-to-speech (HD)

Convert text to speech with the eleven-v4 model, the most expressive speech tier (inline audio tags such as [whispering] are read as delivery cues). Returns base64-encoded audio. Same interface, voices, formats and backups as /api/tts. No API key needed; pay per call via x402 or MPP. Text capped at 2000 chars. Model-backed.

Open endpoint ↗

Price per call: $0.24
Chain: Solana
Method: POST
Paid calls · 30 days: 0

Call it from code

This API is run by its own provider and paid directly through x402. We list it so you can find it; we don't route or hold the payment.

import { x402Client, wrapFetchWithPayment } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";

const client = new x402Client();
registerExactEvmScheme(client, { signer: agentAccount });

const pay = wrapFetchWithPayment(fetch, client);
const res = await pay("https://agent402.tools/api/tts-hd", { method: "POST" });
console.log(await res.json());

https://agent402.tools/api/tts-hd