Krystal Voice Caller

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

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

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Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

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

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Documentation Overview

kvc-mcp

MCP access is included with every Krystal Voice Caller tier. Use this package to manage a tenant from Claude, Cursor, or any MCP-aware agent.

mcp-name: io.github.KrystalUnity/kvc-mcp

Install

Terminal

pip install kvc-mcp

Configure

Create or rotate an API token in the Krystal Voice Caller dashboard, then set:

server.ts

export KVC_API_TOKEN="kvc_token_..."
export KVC_BASE_URL="https://krystalunity.com/api/admin/kvc"

Cursor example:

config.json

{
  "mcpServers": {
    "krystal-voice-caller": {
      "command": "kvc-mcp",
      "env": {
        "KVC_API_TOKEN": "kvc_token_..."
      }
    }
  }
}

Tools

The server exposes tenant config, DNC, call history, reception captures, digest send-now, Script Author draft chat, contact upload, outbound captures, and test-call tools. Product availability is enforced by the Krystal Voice Caller API, so Reception-only tenants get inbound/reception tools and Bundle/Premium tenants get outbound Email Hunter tools.

Script approval is not exposed through MCP. Approval stays admin-only in the web UI.

Publish

Operator-only steps:

cd packages/kvc-mcp && uv build
uv publish --username __token__ --password "$PYPI_TOKEN"
Submit an MCP Registry entry named io.github.KrystalUnity/kvc-mcp pointing at the PyPI package.
Verify from a fresh venv with pip install kvc-mcp && kvc-mcp --help.

Read the full README →View source on GitHub →

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Adoption & maintenance

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GitHub stars

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Last commit

4mo ago

Most recent push to the default branch.

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Frequently Asked Questions about Krystal Voice Caller

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "krystal-voice-caller": { "command": "uvx", "args": ["kvc-mcp"] } }

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Technical Specs & Signals

CategoryDeveloper Tools

11/14 checks healthy over the last 46d

35Quality signal: Fair · 35/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership10/20

Documentation & tools15/30

Adoption & activity1/15

Community engagement0/10

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Critical 0High 0Medium 0Low 0

Scanned 2d ago via OSV.dev · kvc-mcp (PyPI)

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More in 💻 Developer Tools →Best MCP servers for Developers →Alternatives to Krystal Voice Caller →Install in Claude Desktop Install in Cursor Install in VS Code Setup guides for all 13 MCP clients