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Local Voice MCP

Enables MCP clients to speak by running local voice models using Chatterbox Turbo TTS or Kokoro TTS, with support for voice cloning, paralinguistic tags, and multiple voices.

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// key findings
⚠️
Known vulnerabilities in dependencies: 16 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
⚠️
Tests do not pass
Either the test suite is broken or the code regressed. Either way the published behaviour can’t be verified by the publisher’s own tests.
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.
🔐
You'll be asked for 1 credential: API_KEY
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// known CVEs in dependencies16 high13 low

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

high@modelcontextprotocol/sdk@1.12.1GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.12.1GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.12.1GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

highaxios@1.9.0GHSA-35jp-ww65-95wh

axios Vulnerable to Full Man-in-the-Middle via Prototype Pollution Gadget in `config.proxy`

highaxios@1.9.0GHSA-3g43-6gmg-66jw

axios Vulnerable to Credential Theft and Response Hijacking via Prototype Pollution Gadget in Config Merge

Depend on this server? Get alerted when its CVEs change.Watch this server free →
// required environment variables
This server reads these from process.env. You'll be asked to provide them before it can run.
🔐 secretAPI_KEY
configCHATTERBOX_MAX_CHARACTERS"": "2000",
configCHATTERBOX_OUTPUT_DIROutput directory for generated audio files (default: system temp + "local-voice-mcp")
configCHATTERBOX_PLAYBACK_VOLUMEvolume (number, optional): Playback volume as percentage (0-100). If not specified, uses environment variable or default of 50.
configCHATTERBOX_PYTHON_PATH
configCHATTERBOX_REFERENCE_AUDIOPath to reference audio file for voice cloning (can be anywhere on your system, supports .wav, .mp3, .flac, .ogg, .m4a, .aac). If not specified, uses the bundled high-quality female reference voice.
configKOKORO_LANGUAGE"": "en-us",
configKOKORO_MAX_CHARACTERSMaximum number of characters allowed for text input (integer, default: 5000)
configKOKORO_MODEL_PATHPath to kokoro ONNX model file (string, default: "kokoro-v1.0.onnx")
configKOKORO_OUTPUT_DIROutput directory for generated audio files (default: system temp + "local-voice-mcp")
configKOKORO_SPEEDSpeech speed (float, 0.5-2.0, default: 1.0)
configKOKORO_VOICE"": "af_sarah",
configKOKORO_VOICES_PATHPath to voices bin file (string, default: "voices-v1.0.bin")
configMCP_MODEhttp local-voice-mcp-server
configPORT3000 MCP_MODE=http local-voice-mcp-server
configPYTHON_PATHPath to Python interpreter (default: "python3"). Important: If using Apple Silicon with Python 3.13+, point this to a conda environment with Python 3.11-3.12 where mlx-audio is installed.
configTTS_ENGINETo use Kokoro, set the environment variable:
configUSE_MALE_VOICE"": "false",
// 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 2 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/codecraftersllc-local-voice-mcp-0h97nj)](https://m8ven.ai/mcp/codecraftersllc-local-voice-mcp-0h97nj)
commit: 4bf8a9c8b1d7f8fa4c996936af04fb53db9238f2
code hash: 2712503d6b75ea53dd5646cc6610dc14807556f5303f70342448450c1c842800
verified: 6/22/2026, 12:43:30 PM
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