VOICEVOX TTS MCP

A text-to-speech MCP server that enables AI assistants to speak using the VOICEVOX engine with support for multi-character conversations. It features queue management, low-latency streaming via FFplay, and cross-platform playback across Windows, macOS, and Linux.

→ kajidog/mcp-tts-voicevox · listed on glama

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// key findings

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

✅

Open source with a license and README

Anyone can audit the code, the license is declared, and the publisher documents what it does.

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configDISPLAY

configVOICEVOX_DEFAULT_IMMEDIATE— Immediate playback true

configVOICEVOX_DEFAULT_SPEAKER— Default speaker ID 1

configVOICEVOX_DEFAULT_SPEED_SCALE— Playback speed 1.0

configVOICEVOX_DEFAULT_WAIT_FOR_END— Wait for playback end false

configVOICEVOX_DEFAULT_WAIT_FOR_START— Wait for playback start false

configVOICEVOX_DISABLED_GROUPS— export =player

configVOICEVOX_DISABLED_TOOLS— export =speak_player,synthesize_file

configVOICEVOX_RESTRICT_IMMEDIATE— Restrict immediate option

configVOICEVOX_RESTRICT_WAIT_FOR_END— Restrict waitForEnd option

configVOICEVOX_RESTRICT_WAIT_FOR_START— Restrict waitForStart option

configVOICEVOX_STREAMING_PLAYBACK

configVOICEVOX_URL— Engine URL http://localhost:50021

configWAYLAND_DISPLAY

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 0 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/kajidog-mcp-tts-voicevox-16b1z7)](https://m8ven.ai/mcp/kajidog-mcp-tts-voicevox-16b1z7)

commit: 1b89330349bbecf53321b9b6f0d6574e27ce27ee

code hash: c4f69b8fa304c711ce00fde89208fadd4f7e49bae07ac463f0f4032170f4cf5c

verified: 4/11/2026, 3:26:51 PM

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