Is the Cal.com MCP server free?

Yes. Activepieces is open source and free to start, and the MCP server is included on every plan, from the free cloud tier to any self-hosted deployment.

How do I connect Cal.com to Claude or Cursor?

Connect Cal.com in Activepieces, enable the server under Settings → MCP Server, then paste your server URL into your client config. It authenticates over OAuth on first use.

What can my agent do in Cal.com?

It can call 1 tool, including Custom API Call, and chain them with steps in other apps inside the same run.

Is it safe to let an agent call Cal.com?

Connections use OAuth2 with limited scopes and are stored under 256-bit encryption, with no API to read them back, so an agent gets scoped access rather than your keys.

Cal.com MCP server

Open-source alternative to Calendly

Cal.com is not a separate install. One Activepieces MCP server exposes it alongside 770+ other apps, behind a single URL.

Start building See the Cal.com integration

Tools: 1
Works with: Any MCP client
Auth: API key
License: MIT, open source
Updated: September 2026

About the Cal.com MCP server

Connect Cal.com once in Activepieces and every action it ships becomes a tool your assistant can call, behind the same server URL as the rest of your apps. Your agent reaches Cal.com and 770+ other apps over a single connection, on our cloud or a self-hosted install.

Tools

Cal.com tools your AI can run

Once connected, your assistant can call any of these Cal.com actions by asking in plain language.

Custom API Call
Make a custom API call to a specific endpoint
10 fields

Triggers

Cal.com events your agent can watch

These start a run the moment something happens in Cal.com, so work gets picked up on its own.

Booking Cancelled
Create a webhook to monitor when Booking Cancelled
Booking Created
Create a webhook to monitor when Booking Created
Booking Rescheduled
Create a webhook to monitor when Booking Rescheduled

Give your assistant Cal.com

Connect Cal.com once and every tool above is callable from Claude, Cursor or any MCP client, behind the same server URL as 770+ other apps. Free to start.

Get your server URL Talk to sales

Cal.com MCP, answered.

No. That is the point of it. One Activepieces server exposes Cal.com alongside every other piece you connect, so your client keeps a single connection.