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Api Endpoint

AgentUtility.ai

Converts text to speech with 30+ voices and 5 audio formats. Morpheus primary for Kokoro, Venice fallback and alternate TTS models (xAI / ElevenLabs / Orpheus / MiniMax / Gemini), with fal.ai storage for hosted audio URLs. Use it as a TTS API or voice generator.

Open interactive test console

Offering

Provider
x402.agentutility.ai
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://x402.agentutility.ai/text-to-speech
MIME type
Not provided
First seen
2026-10-16T01:50:19.913Z
Last seen
Tags
synthforge, Text, speech

Website

Payment pricing

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

Payment option 1
0.05 USDC
Atomic price: 50000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.05 USDC
Atomic price: 50000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "50000",
    "payTo": "0x6c0752c09e7F6fA6526fCDf40e456a159ebB5621"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "50000",
    "payTo": "FJqAJ4dXkFbrp3EEo8E9x98iaBGUQwaU8Srz5ePfUXLH"
  }
]

Observed health

Status
Healthy
Latest latency
93 ms
Average latency
2590 ms
HTTP status
204
Last checked
Reachability
92.9% 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": {
      "properties": {
        "format": {
          "description": "Audio format. Default mp3.",
          "enum": [
            "mp3",
            "wav",
            "opus",
            "aac",
            "flac"
          ],
          "type": "string"
        },
        "model": {
          "description": "TTS model ID. Default tts-kokoro; the voice must be compatible with the selected model.",
          "type": "string"
        },
        "speed": {
          "description": "Playback speed from 0.25 to 4. Default 1.",
          "type": "number"
        },
        "text": {
          "description": "Text to synthesize, up to 4,000 characters.",
          "maxLength": 4000,
          "type": "string"
        },
        "voice": {
          "description": "Model-specific voice ID. Default af_sky; onyx maps to the Kokoro am_onyx voice.",
          "type": "string"
        }
      },
      "required": [
        "text"
      ]
    },
    "bodyType": {
      "enum": [
        "json",
        "form-data",
        "text"
      ],
      "type": "string"
    },
    "method": {
      "enum": [
        "POST"
      ],
      "type": "string"
    },
    "type": {
      "const": "http",
      "type": "string"
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "type": "object"
}

Output schema

{
  "properties": {
    "example": {
      "properties": {
        "audio_url": {
          "type": "string"
        },
        "file_size_bytes": {
          "type": "integer"
        },
        "format": {
          "type": "string"
        },
        "source": {
          "type": "string"
        }
      },
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}