Krystal Voice Caller MCP Server: Install & Setup

Install Krystal Voice Caller in Claude Code

Claude Code

claude mcp add krystal-voice-caller -e KVC_API_TOKEN=... -- uvx kvc-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "krystal-voice-caller": {
      "command": "uvx",
      "args": [
        "kvc-mcp"
      ],
      "env": {
        "KVC_API_TOKEN": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Krystal Voice Caller MCP server do?

Drive a Krystal Voice Caller tenant from Claude, Cursor, or any MCP-aware agent.

Is the Krystal Voice Caller MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Krystal Voice Caller run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Krystal Voice Caller to Claude Code?

Run: claude mcp add krystal-voice-caller -e KVC_API_TOKEN=... -- uvx kvc-mcp

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