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Voice Processing · Developer Tools

MCP Tts Voicevox logo

MCP Tts Voicevox

kajidog/mcp-tts-voicevox

MCP server for VOICEVOX speech synthesis, providing queue management and preloading features, with support for text-to-speech and audio file generation.

View on GitHub1

Install

npx -y @kajidog/mcp-tts-voicevox

Client configuration

{
  "mcpServers": {
    "tts-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@kajidog/mcp-tts-voicevox"
      ]
    }
  }
}

Environment variables

VOICEVOX_DISABLED_TOOLSVOICEVOX_DISABLED_GROUPSMCP_HTTP_MODEMCP_ALLOWED_HOSTS
GitHub stars
1
Author
@kajidog
Category
Voice Processing, Developer Tools
License
ISC
Updated
Oct 6, 2026

About MCP Tts Voicevox

A text-to-speech MCP server using VOICEVOX

Try the Browser Demo — Test VoicevoxClient directly in your browser

Features

  • Make your AI assistant speak — Text-to-speech from MCP clients like Claude Desktop

  • UI Audio Player (MCP Apps) — Play audio directly in the chat with an interactive player (ChatGPT / Claude Desktop / Claude Web etc.)

  • Multi-character conversations — Switch speakers per segment in a single call

  • Smooth playback — Queue management, immediate playback, prefetching, streaming

  • Cross-platform — Works on Windows, macOS, Linux (including WSL)

Tools (20)

  • voicevox_speak_player

    Create a new player session and display the UI.

  • voicevox_resynthesize_player

    Update all segments for an existing player (new viewUUID each call).

  • voicevox_get_player_state

    Read the current player state (paginated) for AI tuning.

  • voicevox_open_dictionary_ui

    Open the user dictionary manager UI.

  • voicevox_speak

    Text-to-Speech

  • voicevox_ping

    Check VOICEVOX Engine connection

  • voicevox_get_speakers

    Get list of available speakers

  • voicevox_stop_speaker

    Stop playback and clear queue

  • voicevox_synthesize_file

    Generate audio file

  • voicevox_get_accent_phrases

    Get reading and accent positions of a text as inline notation

  • voicevox_get_user_dictionary

    List user dictionary words (filter + pagination)

  • voicevox_add_user_dictionary_word

    Add a word (pronunciation accepts inline accent notation)

  • voicevox_update_user_dictionary_word

    Update a word (omitted fields keep their value)

  • voicevox_delete_user_dictionary_word

    Delete a word by UUID

  • voicevox_add_user_dictionary_words

    Add multiple words at once

  • voicevox_update_user_dictionary_words

    Update multiple words at once

  • player

    speak_player, resynthesize_player, get_player_state, open_dictionary_ui

  • dictionary

    get_accent_phrases, get_user_dictionary, add_user_dictionary_word, update_user_dictionary_word, delete_user_dictionary_word, add_user_dictionary_words,…

  • file

    synthesize_file

  • apps

    speak_player, resynthesize_player, open_dictionary_ui (MCP App UI tools)

Details on this page are taken from the project's README. Open README

Supported clients

Clients mentioned in this server's README:

View all
Claude Desktop logo

Claude Desktop

Desktop · Freemium · Proprietary

Anthropic's official Claude AI desktop application. Supports MCP servers to extend functionality.

WindowsMacOS
VS Code GitHub Copilot logo

VS Code GitHub Copilot

Desktop · Freemium · MIT

VS Code integrates MCP with GitHub Copilot through agent mode, allowing direct interaction with MCP-provided tools in your agentic coding workflow. Configure servers in Claude Desktop, workspace, or user settings, with guided MCP installation and secure handling of secrets in input variables to avoid leaking hardcoded keys.

WindowsMacOSLinuxWeb

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