MCP MeasureMCP Measure

index observed

echo

Text-to-speech API: neural voices, pay-per-credit in Bitcoin sats via BTCPay.

Should I use this

Quality & Safety

B
Description quality
90%
Schema completeness
58%
Naming quality
80%
Poisoning risk
100%
Permission match
100%
Protocol compliance
100%

Findings (1)

  • LOWTool 'echo_tts' description lacks action verbin echo_tts

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~300Tokens (tool definitions)
~385 BTypical response size
Minimal attention impact (0.23% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "echo": {
      "url": "https://echo-mcp.thetempleofdoom.com/mcp"
    }
  }
}

Remote endpoints

https://echo-mcp.thetempleofdoom.com/mcpstreamable-http

What it can do

Tool inventory

Tools (5)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢echo_beacon

Check ECHO voice API status (free).

Input Schema

{
  "type": "object",
  "properties": {},
  "title": "echo_beaconArguments"
}
🟢echo_voices

List available TTS voices.

Input Schema

{
  "type": "object",
  "properties": {},
  "title": "echo_voicesArguments"
}
⚪echo_tts(text, voice, api_key)

Synthesize speech from text (1 credit). Returns base64 MP3 audio.

Input Schema

{
  "type": "object",
  "properties": {
    "text": {
      "title": "Text",
      "type": "string"
    },
    "voice": {
      "default": "en-US-JennyNeural",
      "title": "Voice",
      "type": "string"
    },
    "api_key": {
      "default": "",
      "title": "Api Key",
      "type": "string"
    }
  },
  "required": [
    "text"
  ],
  "title": "echo_ttsArguments"
}
🟡echo_order(credits)

Create a payment order for ECHO credits (BTCPay checkout URL).

Input Schema

{
  "type": "object",
  "properties": {
    "credits": {
      "default": 50,
      "title": "Credits",
      "type": "integer"
    }
  },
  "title": "echo_orderArguments"
}
⚪echo_collect_key(order_id)

Collect your ECHO API key after paying (status=settled).

Input Schema

{
  "type": "object",
  "properties": {
    "order_id": {
      "title": "Order Id",
      "type": "string"
    }
  },
  "required": [
    "order_id"
  ],
  "title": "echo_collect_keyArguments"
}

Community

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Evidence

Recent observations

verifiedversion not recorded5 tools