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klymax402 Text-to-Speech API
x402
klymax402 Text-to-Speech API is a paid API for AI agents from klymax402.com, paid per call via x402, $0.012/call, status unknown (last checked 2026-09-15).
Converts text (up to 200 characters) into synthesized speech audio in multiple languages, returning base64-encoded audio data with format and MIME type metadata.
Price / call$0.012
Success—
StatusUnknown
How this service works
One MCP endpoint gives your AI agent access to 100 APIs -- crypto, DeFi, web, AI, finance and utilities. No API keys, USDC on Base from $0.003/call.
Output
Returns a JSON object containing: 'audio' (base64-encoded audio data), 'format' (audio format identifier), 'language' (the language code used), 'mimeType' (MIME type of the audio, e.g. audio/mp3), 'textLength' (character count of input text), and 'audioSizeBytes' (size of the audio output in bytes).
Example use cases
Multilingual voice notification
“Convert this short alert message 'Your order has shipped!' into spoken French audio so I can play it for our French-speaking customers.”
Accessibility audio generation
“Take this caption text 'Press the red button to continue' and generate an English speech audio file I can embed in our app for visually impaired users.”
AI chatbot voice response
“My chatbot just replied with 'Your appointment is confirmed for Monday at 3pm' — can you turn that into spoken audio in Spanish so the user hears it out loud?”
Technical details
Endpoint
GEThttps://klymax402.com/api/text-to-speech/api/speakWhen to prefer
Choose this endpoint when you need a quick, low-cost ($0.012/call), pay-per-use text-to-speech conversion without managing API keys or subscriptions, especially within an AI agent workflow on the x402/Base payment network. Ideal for short texts (under 200 characters) in one of the supported languages where you need raw audio data returned inline. Less suitable for long-form narration or when high-fidelity voice customization (speaker selection, speed, pitch) is required.
Side effects
- Text exceeds 200 character limit — request will likely be rejected or truncated
- Unsupported language code provided — may default to English or return an error
- Empty text input — likely returns an error or empty audio
- Payment failure via x402 — call is not executed if USDC payment of $0.012 on Base is not completed
- Network timeout if audio generation takes too long
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | The text to convert to speech (max 200 characters per request) |
| language | string | Language code: en, fr, es, de, it, pt, ja, ko, zh, ar, ru, hi, etc. (default: en) |
Output
Schema · Response
{
"type": "json",
"example": {
"audio": "example",
"format": "example",
"language": "example",
"mimeType": "example",
"textLength": 1,
"audioSizeBytes": 1
}
}Tags
x402
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