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Brainiall Speech AI - MCP Server

MCP server providing AI-powered pronunciation assessment, speech-to-text, and text-to-speech tools via Brainiall Speech AI APIs.

Tools

Tool

Description

assess_pronunciation

Score how accurately a speaker pronounced a given text (0-100), with per-word and phoneme-level feedback

transcribe_speech

Transcribe speech audio into text with automatic language detection

synthesize_speech

Convert text to natural-sounding speech audio (MP3)

list_voices

List all available text-to-speech voices

Prerequisites

Get your free API key at app.brainiall.com.

Installation

Using pip

pip install fastmcp httpx

Using Docker

docker build -t brainiall-mcp .
docker run -e BRAINIALL_API_KEY=your-key -p 8000:8000 brainiall-mcp

Configuration

Set the BRAINIALL_API_KEY environment variable:

export BRAINIALL_API_KEY=your-api-key

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "brainiall-speech-ai": {
      "command": "fastmcp",
      "args": ["run", "server.py"],
      "env": {
        "BRAINIALL_API_KEY": "your-api-key"
      }
    }
  }
}

Cursor / VS Code

Add to your MCP settings:

{
  "mcpServers": {
    "brainiall-speech-ai": {
      "command": "fastmcp",
      "args": ["run", "/path/to/server.py"],
      "env": {
        "BRAINIALL_API_KEY": "your-api-key"
      }
    }
  }
}

Streamable HTTP (Docker / Remote)

docker run -e BRAINIALL_API_KEY=your-key -p 8000:8000 brainiall-mcp

Connect your MCP client to http://localhost:8000/mcp.

Running Locally

# stdio (default for Claude Desktop / Cursor)
BRAINIALL_API_KEY=your-key fastmcp run server.py

# streamable-http
BRAINIALL_API_KEY=your-key fastmcp run server.py --transport streamable-http --port 8000

API Reference

All tools communicate with the Brainiall Speech AI API at https://api.brainiall.com. Full API documentation is available at app.brainiall.com.

assess_pronunciation

Parameter

Type

Required

Description

text

string

Yes

Reference text the user should have read

audio_base64

string

Yes

Base64-encoded audio (WAV or MP3)

language

string

No

Language code, default en-US

transcribe_speech

Parameter

Type

Required

Description

audio_base64

string

Yes

Base64-encoded audio (WAV, MP3, WEBM, OGG)

language

string

No

Language hint for transcription

synthesize_speech

Parameter

Type

Required

Description

text

string

Yes

Text to convert to speech

voice

string

No

Voice ID, default alloy

speed

float

No

Speed multiplier (0.5-2.0), default 1.0

list_voices

No parameters. Returns available voice options with IDs and supported languages.

License

MIT

Install Server
A
security – no known vulnerabilities
A
license - permissive license
A
quality - confirmed to work

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