Name: voice
Price: 0.05 USDC
Availability: InStock

$ man voice

PRICE / CALL

$0.05

USDC · base mainnet · scheme: exact

METHOD

POST

CLUSTER

CATEGORY

STATUS

● live

NAME

voice — text-to-speech / tts / voice synthesis

SYNOPSIS

POST https://x402.org/v1/voice
     Content-Type: application/json
     X-PAYMENT:    <signed-transferWithAuthorization>

     { ... }

↳ first call → 402 Payment Required. Sign USDCtransferWithAuthorization, retry with theX-PAYMENT header.

DESCRIPTION

Text-to-speech / TTS / voice synthesis. Venice TTS (Kokoro/xAI/ElevenLabs/Orpheus/MiniMax). 30+ voices, MP3/WAV/OPUS/AAC/FLAC.

INPUT — request schema

property	type	description	req?
text	string	Max 4000 chars.	required
voice	string	Default 'af_sky'.	optional
model	string	Default 'tts-kokoro'. Other options: tts-xai-v1, tts-elevenlabs-turbo-v2-5, tts-orpheus, etc.	optional
speed	number	0.25-4. Default 1.	optional
format	string	mp3 (default), wav, opus, aac, flac.	optional

OUTPUT — response shape

field	type	description
audio_url	string	Signed URL to the generated audio file hosted on R2 or similar object storage.
file_size_bytes	number	Size of the generated audio file in bytes.
content_type	string	MIME type of the audio response, like audio/mpeg or audio/wav.
format	string	Audio container/codec returned: mp3, wav, opus, aac, or flac.
voice	string	Voice ID used for synthesis from the 30+ Venice TTS voices.
model	string	TTS model that produced the audio: Kokoro, xAI, ElevenLabs, Orpheus, or MiniMax.
speed	number	Playback speed multiplier applied during synthesis, where 1.0 is normal pace.
input_chars	number	Number of characters in the input text that were synthesized.

EXAMPLES — two ways to call

EXAMPLE 1 · curl

curl -X POST https://x402.org/v1/voice \
  -H 'Content-Type: application/json' \
  -d '{ }'

first response = 402 Payment Required with payment requirements; sign + retry with X-PAYMENT.

EXAMPLE 2 · mcp

# install once
claude mcp add x402 --command "npx x402-deployer-mcp"

# then ask Claude Code:
# "use the voice tool to ..."

MCP server handles payment automatically — your coding agent just calls the tool by name.

METADATA

ADJACENT — other endpoints in synthforge

endpoint	description	price
music-generate	Music generation / text-to-music / AI music / generative song / instrumental and vocal music.	$0.05
text-to-speech	Text to speech / TTS / voice generator.	$0.05
remove-bg	AI background remover / background eraser / cutout tool.	$0.08
image-edit	Image edit / instruction-based image edit / text-driven photo edit / nano-banana image editor / GPT-image-2 edit.	$0.02
image-inpaint	Image inpainting / mask-based image edit / fill in masked region / object replacement / face swap (mask-driven) / generative fill.	$0.02
image-generate	Image generate (fast/cheap) / text-to-image / AI art.	$0.01
sound-effect-generate	Sound effect generation / text-to-SFX / Foley generator / ElevenLabs sound effects / ambient audio synth.	$0.01
image-generate-pro	Image generate (pro) / premium text-to-image / Flux 2 Pro / Recraft / Seedream / Qwen Image 2 Pro / xAI Grok Imagine.	$0.10

/voice(1)