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Text to Speech API

Official registry Media and design

Convert text to MP3 speech audio in 50+ languages. x402 micropayment.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (sse)
Claude Code 
claude mcp add --transport sse text-to-speech-api 'https://text-to-speech.api.klymax402.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "text-to-speech-api": {
            "type": "sse",
            "url": "https://text-to-speech.api.klymax402.com/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Text to Speech API
  2. Quickstart -- MCP
  3. Quickstart -- HTTP (x402)
  4. Tools
  5. Example agent prompts
  6. Payment
  7. Part of klymax402
  8. License

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

ToolMethodPathPriceDescription
media_text_to_speechPOST/api/speak$0.012Convert 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

NameTypeRequiredDescription
textstringyesThe text to convert to speech (max 200 characters per request)
languagestringnoLanguage 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.

License

MIT

Frequently asked questions

What is Text to Speech API?

Convert text to MP3 speech audio in 50+ languages. x402 micropayment.

How do I install Text to Speech API?

It runs as a remote server. In Claude Code: claude mcp add --transport sse text-to-speech-api 'https://text-to-speech.api.klymax402.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Text to Speech API need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Text to Speech API open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Text to Speech API?

It is published by Br0ski777. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.