Add the Cal.com MCP server to Claude Code

Config last verified Jun 1, 2026

The exact config to run Cal.com in Claude Code — paste it in, restart, and the tools load.

Prerequisites

Claude Code installed.
CAL_API_KEY — Cal.com API key for the local stdio server (the remote endpoint uses OAuth instead).

Setup

1. Open `~/.claude.json`

2. Add this configuration

Add to ~/.claude.json

~/.claude.json

json

{
  "mcpServers": {
    "cal-com": {
      "type": "http",
      "url": "https://mcp.cal.com/mcp"
    }
  }
}

Or via CLI

bash

claude mcp add --transport http cal-com https://mcp.cal.com/mcp

Heads up

First tool call opens a browser to authorize.

3. Restart Claude Code and confirm the Cal.com tools load.

Gotchas

First tool call opens a browser to authorize.

Claude Code stores MCP servers under an "mcpServers" object in ~/.claude.json. It also reads a project-scoped .mcp.json and supports adding servers from the command line with "claude mcp add". Each entry must declare either a "type" or a "command"; Claude Code refuses an entry that has neither. Remote servers connect natively over Streamable HTTP with OAuth.

← Back to the Cal.com MCP server