Krystal Voice Caller MCP Server

by krystalunity Your server? Claim it

local only

Krystal Voice Caller runs on your own machine — the client starts it, so there is no endpoint to ping. 81 installs a week from pypi. Last commit 22 May 2026.

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

Installs per day peak 34 · avg 13 · -20% w/w

a month agotoday

Installs / week

pypi · kvc-mcp

Stars

0 open issues

22 May 2026

Last commit

from GitHub

MIT

License

Python

Nothing serious here today

Today is the operative word: we check Krystal Voice Caller every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add kvc-mcp -e 'KVC_API_TOKEN=<KVC_API_TOKEN>' -- uvx kvc-mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "kvc-mcp": {
      "command": "uvx",
      "args": [
        "kvc-mcp"
      ],
      "env": {
        "KVC_API_TOKEN": "<KVC_API_TOKEN>"
      }
    }
  }
}

~/.codex/config.toml

[mcp_servers.kvc-mcp]
command = "uvx"
args = ["kvc-mcp"]
env = { KVC_API_TOKEN = "<KVC_API_TOKEN>" }

.cursor/mcp.json

{
  "mcpServers": {
    "kvc-mcp": {
      "command": "uvx",
      "args": [
        "kvc-mcp"
      ],
      "env": {
        "KVC_API_TOKEN": "<KVC_API_TOKEN>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "kvc-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "kvc-mcp"
      ],
      "env": {
        "KVC_API_TOKEN": "<KVC_API_TOKEN>"
      }
    }
  }
}

Put your own value in place of <KVC_API_TOKEN> (Bearer token starting with kvc_token_. Generate at https://krystalunity.com/voice/krystal-caller/dashboard/api-tokens). The author’s registry entry marks it as required.

Optional settings from the registry entry, left out of the block above: KVC_BASE_URL (API base URL (default https://krystalunity.com/api/admin/kvc)).

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Krystal Voice Caller — questions

Answers built from our own checks of this server.

Why is there no uptime for Krystal Voice Caller?

Krystal Voice Caller runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the pypi package kvc-mcp was installed 81 times last week.

How do I connect Krystal Voice Caller?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls kvc-mcp straight from pypi; nothing to host, nothing to sign up for.

How many people use Krystal Voice Caller?

The pypi package kvc-mcp was installed 81 times in the last week. Week over week that is -20%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Krystal Voice Caller open source?

Yes — it is published under the MIT licence, written in Python and 1 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.