Index onlineMerchant portal
Api Endpoint

x402engine.app

x402engine — Premium text-to-speech with ElevenLabs — ultra-realistic voices, multilingual support, custom voice IDs

Open interactive test console

Offering

Provider
x402engine.app
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Creative
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://x402engine.app/api/tts/elevenlabs
MIME type
Not provided
First seen
2026-10-16T01:50:14.534Z
Last seen
Tags
None supplied

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.02 USDC
Atomic price: 20000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
20000000000000000 atomic units
Atomic price: 20000000000000000 · Network: eip155:4326 · Asset: 0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7 · Scheme: exact
Payment option 3
0.02 USDC
Atomic price: 20000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "20000",
    "payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629"
  },
  {
    "scheme": "exact",
    "network": "eip155:4326",
    "asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
    "amount": "20000000000000000",
    "payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "20000",
    "payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa"
  }
]

Observed health

Status
Healthy
Latest latency
106 ms
Average latency
579 ms
HTTP status
204
Last checked
Reachability
100% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "additionalProperties": false,
  "properties": {
    "body": {
      "additionalProperties": false,
      "properties": {
        "format": {
          "default": "mp3_44100_128",
          "description": "Audio output format",
          "enum": [
            "mp3_44100_128",
            "mp3_44100_64",
            "pcm_16000",
            "pcm_22050",
            "pcm_24000",
            "pcm_44100",
            "ulaw_8000"
          ],
          "type": "string"
        },
        "model_id": {
          "default": "eleven_multilingual_v2",
          "description": "ElevenLabs synthesis model ID",
          "type": "string"
        },
        "text": {
          "description": "Non-empty text to convert to speech (max 5000 characters)",
          "example": "Hello world",
          "type": "string"
        },
        "voice_id": {
          "description": "ElevenLabs voice ID",
          "example": "21m00Tcm4TlvDq8ikWAM",
          "type": "string"
        }
      },
      "required": [
        "text"
      ],
      "type": "object"
    },
    "bodyType": {
      "enum": [
        "json",
        "form-data",
        "text"
      ],
      "type": "string"
    },
    "method": {
      "enum": [
        "POST"
      ],
      "type": "string"
    },
    "type": {
      "const": "http",
      "type": "string"
    }
  },
  "required": [
    "type",
    "bodyType",
    "body",
    "method"
  ],
  "type": "object"
}

Output schema

{
  "properties": {
    "example": {
      "properties": {
        "audio": {
          "description": "Base64-encoded audio bytes. Decode to save or play the audio.",
          "type": "string"
        },
        "format": {
          "description": "The audio encoding selected for this request.",
          "type": "string"
        }
      },
      "required": [
        "audio",
        "format"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}