Add the Cal.com MCP server to Windsurf

Config last verified Jun 1, 2026

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

Prerequisites

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

Setup

1. Open `~/.codeium/windsurf/mcp_config.json`

On Windows the file lives at %USERPROFILE%\.codeium\windsurf\mcp_config.json.

2. Add this configuration

Add to ~/.codeium/windsurf/mcp_config.json

~/.codeium/windsurf/mcp_config.json

json

{
  "mcpServers": {
    "cal-com": {
      "serverUrl": "https://mcp.cal.com/mcp"
    }
  }
}

Heads up

Windsurf uses `serverUrl` for remote servers.

3. Restart Windsurf and confirm the Cal.com tools load.

Gotchas

Windsurf uses `serverUrl` for remote servers.

Windsurf's Cascade reads MCP servers from an "mcpServers" object in ~/.codeium/windsurf/mcp_config.json. Unlike most clients, remote servers are configured with the "serverUrl" field rather than "url", so a config that uses "url" silently fails to connect. Native remote transport is supported without an OAuth flow.

← Back to the Cal.com MCP server