Summary
Connects Claude or Cursor to your Krystal Voice Caller tenant so you can manage call operations without leaving your editor. You get tools for configuring tenants, handling DNC lists, querying call history and reception captures, triggering digest emails, drafting scripts through Script Author chat, uploading contacts, and running test calls. The API enforces product tier limits, so reception-only accounts see inbound tools while bundle and premium tiers get outbound Email Hunter capabilities. Script approval stays locked to the web UI. Requires a KVC_API_TOKEN from your dashboard and works across any MCP-aware agent. Useful if you're already working in an MCP environment and want programmatic access to your voice calling infrastructure.
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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.
Featured
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Configuration
KVC_API_TOKEN*secretBearer token starting with kvc_token_. Generate at https://krystalunity.com/voice/krystal-caller/dashboard/api-tokens
KVC_BASE_URLdefault: https://krystalunity.com/api/admin/kvcAPI base URL (default https://krystalunity.com/api/admin/kvc).
Categories
Registryactive
Packagekvc-mcp
TransportSTDIO
AuthRequired
UpdatedMay 22, 2026
