# ECHO MCP Server

> MCP (Model Context Protocol) server exposing the ECHO text-to-speech API to AI agents: check service status, list voices, synthesize speech, order credits, and collect API keys — over streamable HTTP.

## What It Is
A FastMCP server that wraps the ECHO TTS REST API as MCP tools: echo_beacon (free status check), echo_voices (list TTS voices), echo_tts (text to base64 MP3, 1 credit), echo_order (create a BTCPay credit order), echo_collect_key (collect your API key after payment). Transport: streamable-http.

## Core Endpoints
- MCP endpoint (streamable-http): https://echo-mcp.thetempleofdoom.com/mcp
- Tools: echo_beacon, echo_voices, echo_tts, echo_order, echo_collect_key
- Companion REST API: https://echo.thetempleofdoom.com/
- REST OpenAPI spec: https://echo.thetempleofdoom.com/openapi.json
## Pricing / Auth
echo_beacon and echo_voices are free; synthesis costs credits purchased with Bitcoin (BTCPay). echo_tts requires an ECHO API key.