# How to integrate Calendly MCP with Codex

```json
{
  "title": "How to integrate Calendly MCP with Codex",
  "toolkit": "Calendly",
  "toolkit_slug": "calendly",
  "framework": "Codex",
  "framework_slug": "codex",
  "url": "https://composio.dev/toolkits/calendly/framework/codex",
  "markdown_url": "https://composio.dev/toolkits/calendly/framework/codex.md",
  "updated_at": "2026-05-12T10:04:47.950Z"
}
```

## Introduction

Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Calendly MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer.

## Also integrate Calendly with

- [ChatGPT](https://composio.dev/toolkits/calendly/framework/chatgpt)
- [OpenAI Agents SDK](https://composio.dev/toolkits/calendly/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/calendly/framework/claude-agents-sdk)
- [Claude Code](https://composio.dev/toolkits/calendly/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/calendly/framework/claude-cowork)
- [Cursor](https://composio.dev/toolkits/calendly/framework/cursor)
- [VS Code](https://composio.dev/toolkits/calendly/framework/vscode)
- [OpenCode](https://composio.dev/toolkits/calendly/framework/opencode)
- [OpenClaw](https://composio.dev/toolkits/calendly/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/calendly/framework/hermes-agent)
- [CLI](https://composio.dev/toolkits/calendly/framework/cli)
- [Google ADK](https://composio.dev/toolkits/calendly/framework/google-adk)
- [LangChain](https://composio.dev/toolkits/calendly/framework/langchain)
- [Vercel AI SDK](https://composio.dev/toolkits/calendly/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/calendly/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/calendly/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/calendly/framework/crew-ai)

## TL;DR

### Why use Composio?
Apart from a managed and hosted MCP server, you will get:
- CodeAct: A dedicated workbench that allows GPT to write its code to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
- Large tool responses: Handle them to minimise context rot.
- Dynamic just-in-time access to 20,000 tools across 1000+ other Apps for cross-app workflows. It loads the tools you need, so GPTs aren't overwhelmed by tools you don't need.

## Connect Calendly to Codex

### How to install Calendly MCP in Codex
### Run the setup command
Run this command in your terminal to add the Composio MCP server to Codex.

```bash
codex mcp add composio --url https://connect.composio.dev/mcp
```

## What is the Calendly MCP server, and what's possible with it?

The Calendly MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Calendly account. It provides structured and secure access to your scheduling workflows, so your agent can perform actions like creating personalized scheduling links, managing events, handling invitee statuses, and automating reminders on your behalf.
- Instant scheduling link creation: Direct your agent to generate single-use or shareable scheduling links so others can book time with you instantly—no more back-and-forth emails.
- Automated event and invitee management: Have your agent cancel events, mark invitees as no-shows, or remove no-show statuses to keep your calendar accurate and up to date.
- Custom one-off event setup: Empower your agent to create unique, one-off meeting types for special situations, bypassing your regular availability rules.
- Webhook subscription automation: Let the agent set up webhook subscriptions to trigger notifications or workflows in real time when events happen in your Calendly account.
- Data privacy and compliance actions: Instruct your agent to delete invitee data or scheduled event records as needed for privacy or regulatory compliance, especially for enterprise use cases.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `CALENDLY_CANCEL_SCHEDULED_EVENT` | Cancel scheduled event | Tool to cancel a scheduled Calendly event by creating a cancellation record. Use when you need to permanently cancel an existing, active event. The cancellation will trigger notifications to all invitees. |
| `CALENDLY_CREATE_EVENT_TYPE` | Create Event Type | Tool to create a new one-on-one event type (kind: solo) in Calendly. Use when you need to programmatically create a new event type for scheduling meetings. |
| `CALENDLY_CREATE_ONE_OFF_EVENT_TYPE` | Create One-Off Event Type | Creates a temporary Calendly one-off event type for unique meetings outside regular availability, requiring valid host/co-host URIs, a future date/range for `date_setting`, and a positive `duration`. |
| `CALENDLY_CREATE_SCHEDULING_LINK` | Create scheduling link | Create a single-use scheduling link. Creates a scheduling link that can be used to book an event. The link allows invitees to schedule up to the specified maximum number of events. Once the limit is reached, the link becomes inactive. |
| `CALENDLY_CREATE_SHARE` | Create share | Creates a customizable, one-time share link for a Calendly event type, allowing specific overrides to its settings (e.g., duration, availability, location) without altering the original event type. |
| `CALENDLY_CREATE_SINGLE_USE_SCHEDULING_LINK` | Create single use scheduling link | Creates a one-time, single-use scheduling link for an active Calendly event type, expiring after one booking. |
| `CALENDLY_CREATE_WEBHOOKS` | Create webhook subscription | Tool to create a webhook subscription for receiving Calendly event notifications. Use when you need to set up automated notifications for events like meeting bookings or cancellations. Organization scope triggers webhooks for all events organization-wide, while user/group scopes limit triggering to specific users or groups. |
| `CALENDLY_DELETE_INVITEE_DATA` | Delete invitee data | Permanently removes all invitee data associated with the provided emails from past organization events, for data privacy compliance (requires Enterprise subscription; deletion may take up to one week). |
| `CALENDLY_DELETE_INVITEE_NO_SHOW` | Delete invitee no show | Deletes an Invitee No-Show record by its `uuid` to reverse an invitee's 'no-show' status; the `uuid` must refer to an existing record. |
| `CALENDLY_DELETE_ORGANIZATION_MEMBERSHIP` | Delete organization membership | Tool to remove a user from a Calendly organization by membership UUID. Use when you need to revoke a user's access to an organization. Requires admin rights; organization owners cannot be removed. |
| `CALENDLY_DELETE_SCHEDULED_EVENT_DATA` | Delete scheduled event data | For Enterprise users, initiates deletion of an organization's scheduled event data between a `start_time` and `end_time` (inclusive, where `start_time` must be <= `end_time`); actual data deletion may take up to 7 days to complete. |
| `CALENDLY_DELETE_WEBHOOK_SUBSCRIPTION` | Delete webhook subscription | Deletes an existing webhook subscription to stop Calendly sending event notifications to its registered callback URL; this operation is idempotent. |
| `CALENDLY_GET_EVENT` | Get event | Use to retrieve a specific Calendly scheduled event by its UUID, provided the event exists in the user's Calendly account. |
| `CALENDLY_GET_EVENT_INVITEE` | Get event invitee | Retrieves detailed information about a specific invitee of a scheduled event, using their unique UUIDs. |
| `CALENDLY_GET_EVENT_TYPE` | Get event type | Retrieves details for a specific Calendly event type, identified by its UUID, which must be valid and correspond to an existing event type. |
| `CALENDLY_GET_EVENT_TYPE_AVAILABILITY` | Get event type availability | Tool to retrieve availability schedules configured for a specific Calendly event type. Use when you need to get the availability rules including day-of-week schedules and date-specific overrides. |
| `CALENDLY_GET_GROUP` | Get group | Retrieves all attributes of a specific Calendly group by its UUID; the group must exist. |
| `CALENDLY_GET_GROUP_RELATIONSHIP` | Get group relationship | Retrieves a specific Calendly group relationship by its valid and existing UUID, providing details on user-group associations and membership. |
| `CALENDLY_GET_INVITEE_NO_SHOW` | Get invitee no show | Retrieves details for a specific Invitee No Show record by its UUID; an Invitee No Show is marked when an invitee does not attend a scheduled event. |
| `CALENDLY_GET_ORGANIZATION` | Get organization | Tool to retrieve information about a specific Calendly organization. Use when you need to get organization details such as name, slug, or timestamps. |
| `CALENDLY_GET_ORGANIZATION_INVITATION` | Get organization invitation | Retrieves a specific Calendly organization invitation using its UUID and the parent organization's UUID. |
| `CALENDLY_GET_ORGANIZATION_MEMBERSHIP` | Get organization membership | Retrieves a specific Calendly organization membership by its UUID, returning all its attributes. |
| `CALENDLY_GET_ROUTING_FORM` | Get routing form | Retrieves a specific routing form by its UUID, providing its configuration details including questions and routing logic. |
| `CALENDLY_GET_ROUTING_FORM_SUBMISSION` | Get routing form submission | Tool to retrieve details about a specific routing form submission by its UUID. Use when you need submission details including questions, answers, and routing results. |
| `CALENDLY_GET_SAMPLE_WEBHOOK_DATA` | Get sample webhook data | Tool to retrieve sample webhook payload data for testing webhook subscriptions. Use when you need to verify webhook setup and understand the data structure before creating actual webhook subscriptions. |
| `CALENDLY_GET_USER` | Get user | Retrieves comprehensive details for an existing Calendly user. |
| `CALENDLY_GET_USER_AVAILABILITY_SCHEDULE` | Get user availability schedule | Retrieves an existing user availability schedule by its UUID; this schedule defines the user's default hours of availability. |
| `CALENDLY_GET_WEBHOOK_SUBSCRIPTION` | Get webhook subscription | Retrieves the details of an existing webhook subscription, identified by its UUID, including its callback URL, subscribed events, scope, and state. |
| `CALENDLY_INVITEE_NO_SHOW` | Mark invitee as no-show | Tool to mark an invitee as a no-show for a scheduled event. Use when an invitee fails to attend their scheduled meeting and you need to record their absence in Calendly. |
| `CALENDLY_LIST_ACTIVITY_LOG_ENTRIES` | List activity log entries | Retrieves a list of activity log entries for a specified Calendly organization (requires an active Enterprise subscription), supporting filtering, sorting, and pagination. |
| `CALENDLY_LIST_EVENT_INVITEES` | List event invitees | Retrieves a list of invitees for a specified Calendly event UUID, with options to filter by status or email, and sort by creation time. |
| `CALENDLY_LIST_EVENT_TYPE_AVAILABLE_TIMES` | List event type available times | Fetches available time slots for a Calendly event type within a specified time range; results are not paginated. |
| `CALENDLY_LIST_EVENT_TYPE_MEMBERSHIPS` | List event type hosts | Tool to retrieve a list of event type hosts (memberships) for a specific event type. Use when you need to see which users are configured as hosts for an event type. |
| `CALENDLY_LIST_EVENT_TYPES` | List Event Types | Tool to list all Event Types associated with a specified User or Organization. Use when you need to retrieve event types for a user or organization. Use scheduling_url from results directly; do not manually construct event type URLs. |
| `CALENDLY_LIST_GROUP_RELATIONSHIPS` | List group relationships | Retrieves a list of group relationships defining an owner's role (e.g., member, admin) within a group; an owner can have one membership per group but multiple admin roles across different groups. |
| `CALENDLY_LIST_GROUPS` | List groups | Returns a list of groups for a specified Calendly organization URI, supporting pagination. |
| `CALENDLY_LIST_ORGANIZATION_INVITATIONS` | List organization invitations | Retrieves a list of invitations for a specific organization, identified by its UUID. |
| `CALENDLY_LIST_ORGANIZATION_MEMBERSHIPS` | List organization memberships | Retrieves a list of organization memberships. |
| `CALENDLY_LIST_OUTGOING_COMMUNICATIONS` | List outgoing communications | Retrieves a list of outgoing SMS communications for a specified organization; requires an Enterprise subscription and if filtering by creation date, both `min_created_at` and `max_created_at` must be provided to form a valid range. |
| `CALENDLY_LIST_ROUTING_FORMS` | List routing forms | Retrieves routing forms for a specified organization; routing forms are questionnaires used to direct invitees to appropriate booking pages or external URLs. |
| `CALENDLY_LIST_SCHEDULED_EVENTS` | List scheduled events | Tool to retrieve a list of scheduled Calendly events. Use when you need to view events for a specific user, organization, or group. Requires exactly one of user, organization, or group parameter to scope the query. |
| `CALENDLY_LIST_USER_AVAILABILITY_SCHEDULES` | List user availability schedules | Retrieves all availability schedules for the specified Calendly user. |
| `CALENDLY_LIST_USER_BUSY_TIMES` | List user busy times | Fetches a user's busy time intervals (internal and external calendar events) in ascending order for a period up to 7 days; keyset pagination is not supported. |
| `CALENDLY_LIST_USER_LOCATIONS` | List User Meeting Locations | Tool to retrieve configured meeting location information for a given Calendly user. Use when you need to see all available location options configured by a user for their meetings. |
| `CALENDLY_LIST_WEBHOOK_SUBSCRIPTIONS` | List webhook subscriptions | Retrieves webhook subscriptions for a Calendly organization; `scope` determines if `user` or `group` URI is also required for filtering. |
| `CALENDLY_ORGANIZATION_INVITATION` | Invite user to organization | Tool to invite a user to a Calendly organization via email. Use when you need to send an organization invitation to a new user. Requires organization owner or admin privileges. |
| `CALENDLY_POST_INVITEE` | Create Event Invitee | Tool to create a new Event Invitee with standard notifications, calendar invites, reschedules, and workflows. Use when programmatically scheduling meetings via API. Requires paid Calendly plan (Standard+). |
| `CALENDLY_REMOVE_USER_FROM_ORGANIZATION` | Remove user from organization | Removes a user (who is not an owner) from an organization by their membership UUID, requiring administrative privileges. |
| `CALENDLY_REVOKE_USER_S_ORGANIZATION_INVITATION` | Revoke a user's organization invitation | Revokes a pending and revokable (not yet accepted or expired) organization invitation using its UUID and the organization's UUID, rendering the invitation link invalid. |
| `CALENDLY_UPDATE_EVENT_TYPE` | Update Event Type | Tool to update an existing one-on-one event type (kind: solo) in Calendly. Use when you need to modify event type settings such as name, duration, location, or description. NOTE: Currently only supports one-on-one event types. |
| `CALENDLY_UPDATE_EVENT_TYPE_AVAILABILITY` | Update Event Type Availability | Tool to update an event type availability schedule in Calendly. Use when you need to change the timezone or availability rules for an event type. WARNING: Updating rules will overwrite all existing rules - retrieve existing rules first using GET /event_type_availability_schedules. |

## Supported Triggers

None listed.

## Creating MCP Server - Stand-alone vs Composio SDK

The Calendly MCP server provides comprehensive access to Calendly operations through Composio. Once connected, you can perform all major Calendly actions directly from Codex using natural language commands.

## Complete Code

None listed.

## Conclusion

### Conclusion
You've successfully integrated Calendly with Codex using Composio's MCP server. Now you can interact with Calendly directly from your terminal, VS Code, or the Codex App using natural language commands.
Key benefits of this setup:
- Seamless integration across CLI, VS Code, and standalone app
- Natural language commands for Calendly operations
- Managed authentication through Composio
- Access to 20,000+ tools across 1000+ apps for cross-app workflows
- CodeAct workbench for complex tool chaining
Next steps:
- Try asking Codex to perform various Calendly operations
- Explore cross-app workflows by connecting more toolkits
- Build automation scripts that leverage Codex's AI capabilities

## How to build Calendly MCP Agent with another framework

- [ChatGPT](https://composio.dev/toolkits/calendly/framework/chatgpt)
- [OpenAI Agents SDK](https://composio.dev/toolkits/calendly/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/calendly/framework/claude-agents-sdk)
- [Claude Code](https://composio.dev/toolkits/calendly/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/calendly/framework/claude-cowork)
- [Cursor](https://composio.dev/toolkits/calendly/framework/cursor)
- [VS Code](https://composio.dev/toolkits/calendly/framework/vscode)
- [OpenCode](https://composio.dev/toolkits/calendly/framework/opencode)
- [OpenClaw](https://composio.dev/toolkits/calendly/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/calendly/framework/hermes-agent)
- [CLI](https://composio.dev/toolkits/calendly/framework/cli)
- [Google ADK](https://composio.dev/toolkits/calendly/framework/google-adk)
- [LangChain](https://composio.dev/toolkits/calendly/framework/langchain)
- [Vercel AI SDK](https://composio.dev/toolkits/calendly/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/calendly/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/calendly/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/calendly/framework/crew-ai)

## Related Toolkits

- [Google Calendar](https://composio.dev/toolkits/googlecalendar) - Google Calendar is a time management service for scheduling meetings, events, and reminders. It streamlines personal and team organization with integrated notifications and sharing options.
- [Apaleo](https://composio.dev/toolkits/apaleo) - Apaleo is a cloud-based property management platform for hospitality businesses. It centralizes reservations, billing, and daily operations for smoother hotel management.
- [Appointo](https://composio.dev/toolkits/appointo) - Appointo is an appointment booking platform for Shopify stores. It lets businesses add online scheduling to their websites with zero coding.
- [Bart](https://composio.dev/toolkits/bart) - Bart is the Bay Area Rapid Transit system, providing fast public transportation across the San Francisco Bay Area. It helps commuters and travelers get real-time schedule info, plan routes, and stay updated on service changes.
- [Bookingmood](https://composio.dev/toolkits/bookingmood) - Bookingmood is commission-free booking software for rental businesses. It lets you manage reservations and sync bookings directly on your website.
- [Booqable](https://composio.dev/toolkits/booqable) - Booqable is a rental software platform for managing inventory, bookings, and reservations. It helps businesses streamline rentals and keep track of every item with ease.
- [Cal](https://composio.dev/toolkits/cal) - Cal is a meeting scheduling platform that offers shareable booking links and real-time calendar syncing. It streamlines the process of finding mutual availability to make scheduling effortless.
- [Calendarhero](https://composio.dev/toolkits/calendarhero) - Calendarhero is a powerful scheduling platform that streamlines your calendar management across multiple services. It helps you efficiently schedule, reschedule, and organize meetings without the back-and-forth.
- [Etermin](https://composio.dev/toolkits/etermin) - eTermin is an online appointment scheduling platform for businesses to manage bookings. It streamlines client appointments, saving time and reducing scheduling conflicts.
- [Evenium](https://composio.dev/toolkits/evenium) - Evenium is an all-in-one platform for managing professional events, from planning to analysis. It helps teams simplify event logistics, boost engagement, and track every detail in one place.
- [Eventee](https://composio.dev/toolkits/eventee) - Eventee is a user-friendly event management platform for mobile and web. It boosts attendee engagement for in-person, virtual, and hybrid events.
- [Eventzilla](https://composio.dev/toolkits/eventzilla) - Eventzilla is an event management platform for creating, promoting, and running events. It streamlines ticketing, registration, and attendee coordination for organizers.
- [Humanitix](https://composio.dev/toolkits/humanitix) - Humanitix is a not-for-profit ticketing platform that donates 100% of profits to charity. It empowers event organizers to make social impact with every ticket sold.
- [Lodgify](https://composio.dev/toolkits/lodgify) - Lodgify is an all-in-one vacation rental software for property managers and owners. It centralizes bookings, guest messaging, and channel synchronization in one dashboard.
- [Planyo Online Booking](https://composio.dev/toolkits/planyo_online_booking) - Planyo Online Booking is a flexible reservation system for managing bookings by day, hour, or event. It streamlines scheduling for any business needing reservations.
- [Scheduleonce](https://composio.dev/toolkits/scheduleonce) - Scheduleonce is a scheduling platform for capturing, qualifying, and engaging with inbound leads. It streamlines appointment booking and follow-ups for faster lead conversion.
- [Supersaas](https://composio.dev/toolkits/supersaas) - Supersaas is a flexible appointment scheduling platform for businesses and individuals. It streamlines bookings, reminders, and calendar management in one place.
- [Sympla](https://composio.dev/toolkits/sympla) - Sympla is a platform for managing in-person and online events, ticket sales, and registrations. It streamlines event setup, attendee tracking, and digital content delivery.
- [Gmail](https://composio.dev/toolkits/gmail) - Gmail is Google's email service with powerful spam protection, search, and G Suite integration. It keeps your inbox organized and makes communication fast and reliable.
- [Google Drive](https://composio.dev/toolkits/googledrive) - Google Drive is a cloud storage platform for uploading, sharing, and collaborating on files. It's perfect for keeping your documents accessible and organized across devices.

## Frequently Asked Questions

### What are the differences in Tool Router MCP and Calendly MCP?

With a standalone Calendly MCP server, the agents and LLMs can only access a fixed set of Calendly tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Calendly and many other apps based on the task at hand, all through a single MCP endpoint.

### Can I use Tool Router MCP with Codex?

Yes, you can. Codex fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Calendly tools.

### Can I manage the permissions and scopes for Calendly while using Tool Router?

Yes, absolutely. You can configure which Calendly scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

### How safe is my data with Composio Tool Router?

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Calendly data and credentials are handled as safely as possible.

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