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Drive a Krystal Voice Caller tenant from Claude, Cursor, or any MCP-aware agent.
About
Drive a Krystal Voice Caller tenant from Claude, Cursor, or any MCP-aware agent.
Security Report
5.2
Moderate5.2Moderate RiskThis is a well-structured MCP server for Krystal Voice Caller with proper authentication via API tokens, appropriate authorization controls, and secure credential handling. The code implements a whitelist-based authorization model for sensitive operations, includes comprehensive error handling, and has no malicious patterns or dangerous vulnerabilities. Minor code quality concerns around broad exception handling do not materially impact security. Supply chain analysis found 3 known vulnerabilities in dependencies (0 critical, 3 high severity). Package verification found 1 issue.
5 files analyzed · 7 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Bearer token starting with kvc_token_. Generate at https://krystalunity.com/voice/krystal-caller/dashboard/api-tokensRequired
Environment variable: KVC_API_TOKEN
API base URL (default https://krystalunity.com/api/admin/kvc).
Environment variable: KVC_BASE_URL
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-krystalunity-kvc-mcp": {
"env": {
"KVC_BASE_URL": "your-kvc-base-url-here",
"KVC_API_TOKEN": "your-kvc-api-token-here"
},
"args": [
"kvc-mcp"
],
"command": "uvx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
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
pip install kvc-mcp
Configure
Create or rotate an API token in the Krystal Voice Caller dashboard, then set:
export KVC_API_TOKEN="kvc_token_..."
export KVC_BASE_URL="https://krystalunity.com/api/admin/kvc"
Cursor example:
{
"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 builduv publish --username __token__ --password "$PYPI_TOKEN"- Submit an MCP Registry entry named
io.github.KrystalUnity/kvc-mcppointing at the PyPI package. - Verify from a fresh venv with
pip install kvc-mcp && kvc-mcp --help.
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