Dub: Translate and Speak

x402

Dub: Translate and Speak is a paid API for AI agents from agent402.tools, paid per call via x402, $0.14/call, status unknown (last checked 2026-10-29).

Translates text from one language to another and synthesizes the translation as spoken audio in a single API call.

Price / call$0.14

Seller volume →—

Success—

StatusUnknown

How this service works

Translate a text into a target language and speak the translation, in one paid call. The translation runs on the /v1/chat/completions gateway tier and the speech on /api/tts (tier "standard", $0.140) or /api/tts-hd (tier "hd", $0.260); the price is the sum of the two.

Output

Returns a JSON object containing the translated text, a base64-encoded audio file of the spoken translation, the detected source language, target language, character count, audio format, TTS model used (e.g. elevenlabs/eleven-v4-turbo), voice name, and TTS tier (standard or hd).

Example use cases

Multilingual customer support audio

“Take this support message — 'Your order has been shipped and will arrive in 3 business days.' — translate it into French and generate an MP3 audio file of the translation using the standard tier and the default voice.”

Language learning pronunciation guide

“Translate 'Good morning, how are you today?' into Japanese and speak it out loud using the HD tier so I can hear a high-quality pronunciation.”

Dubbed product announcement clip

“I need to dub our English tagline 'Discover the future of mobility' into German — please translate it and give me the spoken audio in MP3 using the standard voice Sarah.”

Technical details

Endpoint

POSThttps://agent402.tools/api/dub?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need both translation and text-to-speech in a single atomic call, avoiding the overhead of chaining two separate APIs. It is ideal for dubbing messages, producing multilingual audio snippets, or building voice-enabled multilingual workflows where latency and simplicity matter. Prefer the HD tier ($0.260) when audio quality is critical, or standard ($0.140) for cost-sensitive bulk use.

Side effects

Unsupported target language code returns an error or garbled output
Invalid voice name causes TTS to fail or fall back to a default
Missing text field returns a validation error
Unsupported audio format may be rejected
Network timeout during TTS synthesis for very long texts
Payment failure (HTTP 402) if USDC balance is insufficient

Input

Schema · Request body

Field	Type	Description
json	boolean
text	string
tier	string
voice	string
format	string
sourceLanguage	string
targetLanguage	string

Output

Schema · Response

{
  "type": "json",
  "example": {
    "tier": "standard",
    "audio": "<base64-encoded audio>",
    "chars": 58,
    "model": "elevenlabs/eleven-v4-turbo",
    "voice": "sarah",
    "format": "mp3",
    "translation": "Hola desde Agent402. Cada herramienta se paga por llamada.",
    "targetLanguage": "es",
    "translationModel": "openai/gpt-4o-mini",
    "detectedSourceLanguage": "en"
  }
}

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