Text To Speech X402
About
Convert text to speech audio -- 20+ languages, base64 MP3 output. Google TTS engine, fast and reliable. -- x402 micropayment API + MCP server for AI agents
Details
- Author
- Br0ski777
- Downloads
- 256
- Categories
- Other
Jump to
- 20+ languages with configurable language code
- Base64-encoded MP3 audio output
- Google TTS engine, fast and reliable
- Pay-per-call via x402 (USDC on Base L2)
- No API key, no signup, no rate limits
- Max 200 characters per request
Setting up with Highlight
This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:
- Download and install Highlight from highlightai.com/download
- Navigate to the plugins tab and select "Add Custom Plugin"
-
Configure the plugin with the settings below
Plugin Name
Text To Speech X402Command (node, npx, python, etc.)Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
- Enable "Start Automatically" if you want the plugin to start when Highlight launches
From the repository
Add the server URL https://text-to-speech.api.klymax402.com/mcp to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.). Alternatively, call the HTTP endpoint POST /api/speak with a JSON body containing text and optionally language; an x402‑aware client handles the payment challenge automatically.
Claude Desktop / Cursor
Paste into your MCP client config file to install this server.
{
"mcpServers": {
"text to speech x402": {
"text-to-speech": {
"url": "https://text-to-speech-production-0f12.up.railway.app/mcp",
"transport": "sse"
}
}
}
}McpServers
{
"text-to-speech": {
"url": "https://text-to-speech-production-0f12.up.railway.app/mcp",
"transport": "sse"
}
}Text to Speech API
Convert text to speech audio -- 20+ languages, base64 MP3 output. Google TTS engine, fast and reliable. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Quickstart -- MCP
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"text-to-speech": {
"url": "https://text-to-speech.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl -X POST "https://text-to-speech.api.klymax402.com/api/speak" \
-H "Content-Type: application/json" \
-d '{"text":"..."}'
-> 402 Payment Required, with an x402 payment challenge in the response body
Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tools
| Tool | Method | Path | Price | Description |
|---|---|---|---|---|
| media_text_to_speech | POST | /api/speak | $0.005 | Convert text to speech audio |
media_text_to_speech
Use this when you need to convert text to speech audio. Returns base64-encoded MP3 audio in JSON.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
| text | string | yes | The text to convert to speech (max 200 characters per request) |
| language | string | no | Language code: en, fr, es, de, it, pt, ja, ko, zh, ar, ru, hi, etc. (default: en) |
Example response:
{"audio":"SUQzBAAAAAAAI1RTU0UAAAAP...","language":"en","textLength":45,"durationEstimate":3.2,"format":"mp3"}
When to use: generating audio narration, building voice assistants, creating audio versions of articles, accessibility features, and language learning apps.
Not for: language detection (use text_detect_language), text translation (use text_translate), OCR from images (use media_extract_text_from_image).
Example agent prompts
- "Convert text to speech audio"
Payment
- Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (eip155:8453)
- Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
- Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)
Part of klymax402
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT
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