# Calendly (MCP Server)

> Check availability, manage event types, and create scheduling links

- Type: MCP server
- Publisher: Calendly (official)
- Categories: Productivity, Business
- Website: https://developer.calendly.com/docs/mcp/calendly-mcp-server
- Docs: https://developer.calendly.com/docs/mcp/supported-tools
- Transport: streamable-http
- Server URL: https://mcp.calendly.com
- Sign-in: oauth
- Listed: 2026-02-17

## About

Calendly's official hosted MCP server lets AI assistants list event types and available times, look up and cancel scheduled events, create single-use scheduling links, and read user and organization info. It uses OAuth 2.1 with PKCE and dynamic client registration.

## Install

1. **Connect it in ChatGPT** Turn on Developer mode in ChatGPT (Settings → Security and login), open Plugins, select + and paste https://mcp.calendly.com as the MCP server URL, then sign in with OAuth. Add it to a chat from the composer's tools menu.

2. **Or add it to Codex or the API**

   Codex CLI:

   ```bash
   codex mcp add calendly --url https://mcp.calendly.com
   codex mcp login calendly
   ```

   config.toml:

   ```toml
   [mcp_servers.calendly]
   url = "https://mcp.calendly.com"
   ```

   Responses API:

   ```python
   import os
   from openai import OpenAI
   
   client = OpenAI()
   
   response = client.responses.create(
       model="gpt-6-astra",
       tools=[{
           "type": "mcp",
           "server_label": "calendly",
           "server_url": "https://mcp.calendly.com",
           "authorization": os.environ["CALENDLY_API_KEY"],
           "require_approval": "never",
       }],
       input="What times am I free for a 30-minute intro call next week?",
   )
   print(response.output_text)
   ```

## Tools

- `event_types-list_event_types`
- `event_types-get_event_type`
- `event_types-list_event_type_available_times`
- `event_types-create_event_type`
- `event_types-update_event_type`
- `meetings-list_events`
- `meetings-get_event`
- `meetings-cancel_event`
- `meetings-list_event_invitees`
- `scheduling_links-create_single_use_scheduling_link`
- `users-get_current_user`
- `organizations-get_organization`

## Example prompts

- "What times am I free for a 30-minute intro call next week?"
- "Create a single-use scheduling link for my 45-minute demo"
- "List my meetings scheduled for tomorrow"
- "Cancel my 3pm meeting today and notify the invitee"

## Also available as

- app: [Calendly](https://chatgptplugins.directory/apps/calendly.md)

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Source: https://chatgptplugins.directory/mcp/calendly · Index: https://chatgptplugins.directory/llms.txt · Independent and community-run. Not affiliated with or endorsed by OpenAI. ChatGPT is a trademark of OpenAI.