# VOICEPEAK

> Use this tool when you need to generate high-quality Japanese voice content with customizable emotions, speed, and pitch. It solves problems in accessibility, language learning, and content creation by providing a robust text-to-speech synthesis engine with support for multiple narrators and pronunciation dictionary management. The tool takes in Japanese text and outputs WAV audio files, making it ideal for applications requiring natural-sounding Japanese voice outputs.

Canonical page: https://skillsregistry.net/skills/k2wanko-voicepeak  
JSON: https://api.skillsregistry.net/v1/skills/k2wanko-voicepeak

## Description

Built by k2wanko using TypeScript and Bun, this server provides Japanese text-to-speech synthesis capabilities through integration with the VOICEPEAK engine. It supports multiple narrators like Tohoku Zunko and Zundamon with customizable emotions, speed, and pitch parameters. The implementation features robust process management with queuing and retry logic, input validation and sanitization, cross-platform support for macOS/Windows/Linux, and pronunciation dictionary management for custom word pronunciations. Advanced safety features include path traversal protection, concurrent process limiting, automatic temp file cleanup, and WAV format validation, making it valuable for creating Japanese voice content, accessibility applications, and language learning tools.

## Trust

- **Trust score (0–1):** 0.90
- **Verification tier:** verified
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** file-system
- **Updated:** 2026-09-28

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/k2wanko-voicepeak)
- **Repository:** <https://github.com/k2wanko/voicepeak-mcp>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "k2wanko-voicepeak"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/k2wanko-voicepeak` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/k2wanko-voicepeak/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt