Converts text to speech with 30+ voices and 5 audio formats
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.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
23 msmedian answer time
$0.05listed price per call
$0.05price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://x402.agentutility.ai/text-to-speech
| Category | Image and media |
|---|---|
| Provider host | x402.agentutility.ai |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.05 | 23 ms |
Example input (from the provider)
{
"body": {
"format": "mp3",
"text": "Hello, this is a test of the speech synthesizer.",
"voice": "af_sky"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"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": {
"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"
}
},
"required": [
"input"
],
"type": "object"
}