Krystal Voice Caller MCP Server
API key requiredDrive a Krystal Voice Caller tenant from Claude, Cursor, or any MCP-aware agent.
To add Krystal Voice Caller to Claude, run the install command below or copy the ready-made config for Claude Code, Claude Desktop, Cursor and VS Code further down. Restart your client after adding it and its tools show up in your next conversation. It needs 2 environment variables, listed below.
Install
uvx kvc-mcp@0.1.1Environment variables
KVC_API_TOKENSet in your MCP configKVC_BASE_URLSet in your MCP configInstall with your client
claude mcp add krystal-voice-caller --env KVC_API_TOKEN=<YOUR_KVC_API_TOKEN> --env KVC_BASE_URL=<YOUR_KVC_BASE_URL> -- uvx kvc-mcp@0.1.1
Run this in a terminal to add the server to Claude Code.
What this does
Krystal Voice Caller exposes a set of tools to Claude over the Model Context Protocol. After you add it to claude_desktop_config.json (snippet above) and restart Claude Desktop, those tools become callable inside any conversation.
Requirements
This server needs the following environment variables to be set before it can run:
KVC_API_TOKEN KVC_BASE_URL
Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).
Frequently asked questions
How do I install Krystal Voice Caller?
Run the Claude Code command in the install section to add Krystal Voice Caller to Claude Code, or copy the ready-made config for your client from the install section on this page. Restart your client afterwards and the tools appear in your next conversation.
Which clients work with Krystal Voice Caller?
This page carries setup and config for Claude Code, Claude Desktop, Cursor and VS Code. Any other MCP client that accepts a standard server config can connect to Krystal Voice Caller as well.
Does Krystal Voice Caller need an API key?
Yes. Before it can run, set these environment variables: KVC_API_TOKEN, KVC_BASE_URL. They go in the env block of your MCP config.
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