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MCP VOICEVOX Go

@metapox

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Basic information

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Other

Transports

stdio

Author

metapox

About MCP VOICEVOX Go

VOICEVOX MCP Server - Model Context Protocol server for VOICEVOX text-to-speech synthesis

#text-to-speech#voice-synthesis#mcp-server

MCP VOICEVOX Go config

No standard config provided

This server doesn't expose a parseable MCP config block in its README. See the repository for install instructions.

Repository

MCP VOICEVOX Go tools

Tool list not available yet

This listing does not currently have a tool list to display. This does not mean the server has no tools; check its documentation for supported capabilities.

We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is MCP VOICEVOX Go?

MCP VOICEVOX Go is a Model Context Protocol server that allows large language models to use VOICEVOX’s Japanese text‑to‑speech engine. It integrates with a locally running VOICEVOX instance and exposes speech synthesis as MCP tools.

How to use MCP VOICEVOX Go?

Ensure Go 1.21+ and a running VOICEVOX instance (default http://localhost:50021). Clone the repository, run go mod tidy, then start the server with go run cmd/server/main.go server or build a binary. Configure port, VOICEVOX URL, temporary directory, and default speaker via command‑line flags or environment variables (e.g. MCP_VOICEVOX_DEFAULT_SPEAKER). For Amazon Q Developer CLI, register the server with q mcp add.

Key features of MCP VOICEVOX Go

  • Converts text to synthesized speech via VOICEVOX.
  • Lists available speakers and their IDs.
  • Customizable server port, VOICEVOX endpoint, temp directory, and default speaker.
  • Supports environment variable configuration.
  • Designed for use with MCP‑compatible clients (e.g. Amazon Q).

Use cases of MCP VOICEVOX Go

  • Adding voice output to LLM‑powered chatbots or assistants.
  • Generating audio files from text on demand.
  • Enabling accessibility features in LLM applications.
  • Integrating Japanese text‑to‑speech into development workflows.

Frequently asked questions

1

What prerequisites are needed?

Go 1.21 or later and a locally running VOICEVOX instance (default `http://localhost:50021`).

2

How do I change the default speaker?

Use the `--default-speaker` flag or set the `MCP_VOICEVOX_DEFAULT_SPEAKER` environment variable.

3

How can I use this server with Amazon Q Developer CLI?

Register it as an MCP server with `q mcp add --name voicevox --command "./mcp-voicevox server"`. Environment variables can be passed with `--env`.

4

What tools does the server provide?

Two tools: `text_to_speech` (requires `text`, optional `speaker_id`) and `get_speakers` (returns a list of available speakers).

5

Can I use this server with other MCP clients besides Amazon Q?

Yes, it is a standard MCP server; the Amazon Q example is one possible client integration.

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